Refactoring: split 'Utils' into multiple files; fix some stray uppercase-method names

assets/layers/charging_station/csvToJson.ts

@@ -5,6 +5,7 @@ import { LayerConfigJson } from "../../../src/Models/ThemeConfig/Json/LayerConfi
 import FilterConfigJson from "../../../src/Models/ThemeConfig/Json/FilterConfigJson"
 import RewritableConfigJson from "../../../src/Models/ThemeConfig/Json/RewritableConfigJson"
 import { TagRenderingConfigJson } from "../../../src/Models/ThemeConfig/Json/TagRenderingConfigJson"
+import { Lists } from "../../../src/Utils/Lists"
 
 interface ChargingStandard {
     key: string,
@@ -27,36 +28,36 @@ function colonSplit(value: string): string[] {
 }
 
 function loadCsv(file): ChargingStandard[] {
-    const entries: string[] = Utils.NoNull(readFileSync(file, "utf8").split("\n").map(str => str.trim()))
+    const entries: string[] = Lists.noNull(readFileSync(file, "utf8").split("\n").map(str => str.trim()))
     const header = entries.shift().split(",")
 
-    return Utils.NoNull(entries.map(entry => {
-        const values = entry.split(",").map(str => str.trim())
-        if (values[0] === undefined || values[0] === "") {
-            return undefined
+    return Lists.noNull(entries.map(entry => {
+      const values = entry.split(",").map(str => str.trim())
+      if (values[0] === undefined || values[0] === "") {
+        return undefined
+      }
+
+      const v = {}
+      const colonSeperated = ["commonVoltages", "commonOutputs", "commonCurrents", "countryWhiteList", "countryBlackList", "associatedVehicleTypes", "neverAssociatedWith"]
+      const descriptionTranslations = new Map<string, string>()
+      for (let j = 0; j < header.length; j++) {
+        const key = header[j]
+        if (key.startsWith("description")) {
+          const language = key.substring("description:".length)
+          descriptionTranslations.set(language, values[j])
         }
 
-        const v = {}
-        const colonSeperated = ["commonVoltages", "commonOutputs", "commonCurrents", "countryWhiteList", "countryBlackList", "associatedVehicleTypes", "neverAssociatedWith"]
-        const descriptionTranslations = new Map<string, string>()
-        for (let j = 0; j < header.length; j++) {
-            const key = header[j]
-            if (key.startsWith("description")) {
-                const language = key.substring("description:".length)
-                descriptionTranslations.set(language, values[j])
-            }
-
-            if (colonSeperated.indexOf(key) >= 0) {
-                v[key] = colonSplit(values[j])
-            } else {
-                v[key] = values[j]
-            }
+        if (colonSeperated.indexOf(key) >= 0) {
+          v[key] = colonSplit(values[j])
+        } else {
+          v[key] = values[j]
         }
-        v["description"] = descriptionTranslations
-        if (v["id"] === "") {
-            v["id"] = v["key"]
-        }
-        return <any>v
+      }
+      v["description"] = descriptionTranslations
+      if (v["id"] === "") {
+        v["id"] = v["key"]
+      }
+      return <any>v
     }))
 }
 
@@ -161,7 +162,7 @@ function run(file, protojson) {
         // We add a second time for any amount to trigger a visualisation; but this is not an answer option
         const no_ask_json = {
             if: {
-                and: Utils.NoEmpty([`${e.key}~*`, `${e.key}!=1`, ...e.extraVisualisationCondition.split(";")]),
+                and: Lists.noEmpty([`${e.key}~*`, `${e.key}!=1`, ...e.extraVisualisationCondition.split(";")]),
             },
             then: txt,
             hideInAnswer: true,

assets/layers/tree/tree.json

@@ -943,9 +943,9 @@
           "ru": "Onroerend Erfgoed ID:"
         },
         "special": {
-          "type": "link",
           "href": "https://id.erfgoed.net/erfgoedobjecten/{ref:OnroerendErfgoed}",
-          "text": "{ref:OnroerendErfgoed}"
+          "text": "{ref:OnroerendErfgoed}",
+          "type": "link"
         }
       },
       "icon": "./assets/layers/tree/Onroerend_Erfgoed_logo_without_text.svg",

scripts/GenerateSeries.ts

@@ -103,13 +103,13 @@ class StatsDownloader {
         let page = 1
         let allFeatures: ChangeSetData[] = []
         const endDay = new Date(year, month - 1 /* Zero-indexed: 0 = january*/, day + 1)
-        const endDate = `${endDay.getFullYear()}-${Utils.TwoDigits(
+        const endDate = `${endDay.getFullYear()}-${Utils.twoDigits(
             endDay.getMonth() + 1
-        )}-${Utils.TwoDigits(endDay.getDate())}`
+        )}-${Utils.twoDigits(endDay.getDate())}`
         let url = this.urlTemplate
             .replace(
                 "{start_date}",
-                year + "-" + Utils.TwoDigits(month) + "-" + Utils.TwoDigits(day)
+                year + "-" + Utils.twoDigits(month) + "-" + Utils.twoDigits(day)
             )
             .replace("{end_date}", endDate)
             .replace("{page}", "" + page)
@@ -142,7 +142,7 @@ class StatsDownloader {
             }
             url = result.next
         }
-        allFeatures = Utils.NoNull(allFeatures)
+        allFeatures = Lists.noNull(allFeatures)
         allFeatures.forEach((f) => {
             f.properties = { ...f.properties, ...f.properties.metadata }
             if (f.properties.editor.toLowerCase().indexOf("android") >= 0) {

scripts/fetchLanguages.ts

@@ -9,6 +9,7 @@ import { existsSync, readFileSync, writeFileSync } from "fs"
 import WikidataUtils from "../src/Utils/WikidataUtils"
 import LanguageUtils from "../src/Utils/LanguageUtils"
 import Wikidata from "../src/Logic/Web/Wikidata"
+import { Lists } from "../src/Utils/Lists"
 
 interface value<T> {
     value: T
@@ -196,7 +197,7 @@ async function main(wipeCache = false) {
             })
 
         translatedForId["_meta"] = {
-            countries: Utils.Dedup(languagesPerCountry[key]),
+            countries: Lists.dedup(languagesPerCountry[key]),
             dir: value.directionality,
         }
 

scripts/fixSchemas.ts

@@ -7,6 +7,7 @@ import Validators from "../src/UI/InputElement/Validators"
 import { AllKnownLayouts } from "../src/Customizations/AllKnownLayouts"
 import { AllSharedLayers } from "../src/Customizations/AllSharedLayers"
 import Constants from "../src/Models/Constants"
+import { Lists } from "../src/Utils/Lists"
 
 const metainfo = {
     type: "One of the inputValidator types",
@@ -371,7 +372,7 @@ function extractMeta(
     const fullPath = "./src/assets/schemas/" + path + ".json"
     writeFileSync(fullPath, JSON.stringify(paths, null, "  "))
     console.log("Written meta to " + fullPath)
-    return Utils.NoNull(paths.map((p) => validateMeta(p)))
+    return Lists.noNull(paths.map((p) => validateMeta(p)))
 }
 
 function main() {

scripts/generateDocs.ts

@@ -34,6 +34,7 @@ import { ImmutableStore } from "../src/Logic/UIEventSource"
 import * as unitUsage from "../Docs/Schemas/UnitConfigJson.schema.json"
 import { ThemeConfigJson } from "../src/Models/ThemeConfig/Json/ThemeConfigJson"
 import { ServerSourceInfo, SourceOverview } from "../src/Models/SourceOverview"
+import { Lists } from "../src/Utils/Lists"
 
 /**
  * Converts a markdown-file into a .json file, which a walkthrough/slideshow element can use
@@ -562,7 +563,7 @@ export class GenerateDocs extends Script {
                 )
         )
         const serverInfos = Utils.DedupOnId(serverInfosDupl, (item) => item.url)
-        const titles = Utils.Dedup(Utils.NoEmpty(serverInfos.map((s) => s.category)))
+        const titles = Lists.dedup(Lists.noEmpty(serverInfos.map((s) => s.category)))
         titles.sort()
 
         function getHost(item: ServerSourceInfo) {
@@ -597,7 +598,7 @@ export class GenerateDocs extends Script {
             md.push(items.length + " items")
             md.push(categoryExplanation[title])
 
-            const hosts = Utils.Dedup(items.map(getHost))
+            const hosts = Lists.dedup(items.map(getHost))
             hosts.sort()
             if (title === "maplayer") {
                 md.push(MarkdownUtils.list(hosts))
@@ -636,7 +637,7 @@ export class GenerateDocs extends Script {
                         return [
                             item.url,
                             identicalDescription ? "" : item.description,
-                            Utils.NoEmpty([
+                            Lists.noEmpty([
                                 item.openData ? "OpenData" : "",
                                 sourceAvailable,
                                 selfHostable,
@@ -720,9 +721,7 @@ export class GenerateDocs extends Script {
             MarkdownUtils.list(
                 Constants.priviliged_layers.map((id) => "[" + id + "](#" + id + ")")
             ),
-            ...Utils.NoNull(
-                Constants.priviliged_layers.map((id) => AllSharedLayers.sharedLayers.get(id))
-            ).map((l) =>
+            ...Lists.noNull(Constants.priviliged_layers.map((id) => AllSharedLayers.sharedLayers.get(id))).map((l) =>
                 l.generateDocumentation({
                     usedInThemes: themesPerLayer.get(l.id),
                     layerIsNeededBy: layerIsNeededBy,

scripts/generateFavouritesLayer.ts

@@ -13,6 +13,7 @@ import { TagUtils } from "../src/Logic/Tags/TagUtils"
 import { TagRenderingConfigJson } from "../src/Models/ThemeConfig/Json/TagRenderingConfigJson"
 import { Translatable } from "../src/Models/ThemeConfig/Json/Translatable"
 import * as questions from "../assets/layers/questions/questions.json"
+import { Lists } from "../src/Utils/Lists"
 
 export class GenerateFavouritesLayer extends Script {
     private readonly layers: LayerConfigJson[] = []
@@ -155,7 +156,7 @@ export class GenerateFavouritesLayer extends Script {
                             continue
                         }
                         newTr.condition = {
-                            and: Utils.NoNull([newTr.condition, layerConfig.source["osmTags"]]),
+                            and: Lists.noNull([newTr.condition, layerConfig.source["osmTags"]]),
                         }
                         generatedTagRenderings.push(newTr)
                         blacklistedIds.add(newTr.id)

scripts/generateLayerOverview.ts

@@ -37,10 +37,8 @@ import { Translatable } from "../src/Models/ThemeConfig/Json/Translatable"
 import { ValidateThemeAndLayers } from "../src/Models/ThemeConfig/Conversion/ValidateThemeAndLayers"
 import { ExtractImages } from "../src/Models/ThemeConfig/Conversion/FixImages"
 import { TagRenderingConfigJson } from "../src/Models/ThemeConfig/Json/TagRenderingConfigJson"
-import {
-    LayerConfigDependencyGraph,
-    LevelInfo,
-} from "../src/Models/ThemeConfig/LayerConfigDependencyGraph"
+import { LayerConfigDependencyGraph, LevelInfo } from "../src/Models/ThemeConfig/LayerConfigDependencyGraph"
+import { Lists } from "../src/Utils/Lists"
 
 // This scripts scans 'src/assets/layers/*.json' for layer definition files and 'src/assets/themes/*.json' for theme definition files.
 // It spits out an overview of those to be used to load them
@@ -126,20 +124,18 @@ class AddIconSummary extends DesugaringStep<{ raw: LayerConfigJson; parsed: Laye
             pr.location.has("point")
         )
         const defaultTags = layerConfig.baseTags
-        fixed["_layerIcon"] = Utils.NoNull(
-            (pointRendering?.marker ?? []).map((i) => {
-                const icon = i.icon?.GetRenderValue(defaultTags)?.txt
-                if (!icon) {
-                    return undefined
-                }
-                const result = { icon }
-                const c = i.color?.GetRenderValue(defaultTags)?.txt
-                if (c) {
-                    result["color"] = c
-                }
-                return result
-            })
-        )
+        fixed["_layerIcon"] = Lists.noNull((pointRendering?.marker ?? []).map((i) => {
+          const icon = i.icon?.GetRenderValue(defaultTags)?.txt
+          if (!icon) {
+            return undefined
+          }
+          const result = { icon }
+          const c = i.color?.GetRenderValue(defaultTags)?.txt
+          if (c) {
+            result["color"] = c
+          }
+          return result
+        }))
         return { raw: fixed, parsed: layerConfig }
     }
 }
@@ -233,7 +229,7 @@ class LayerBuilder extends Conversion<object, Map<string, LayerConfigJson>> {
         const origIds: ReadonlyArray<string> = [...ids]
 
         const deps = this._dependencies
-        const allDeps = Utils.Dedup([].concat(...ids.map((id) => deps.get(id))))
+        const allDeps = Lists.dedup([].concat(...ids.map((id) => deps.get(id))))
         const depsRecord = Utils.asRecord(Array.from(deps.keys()), (k) =>
             deps.get(k).filter((dep) => ids.indexOf(dep) >= 0)
         )
@@ -864,7 +860,7 @@ class LayerOverviewUtils extends Script {
             )
         }
         if(printAssets){
-            const images = Utils.Dedup(Array.from(sharedThemes.values()).flatMap(th => th._usedImages ?? [] ))
+            const images = Lists.dedup(Array.from(sharedThemes.values()).flatMap(th => th._usedImages ?? []))
             writeFileSync("needed_assets.csv", images.join("\n"))
             console.log("Written needed_assets.csv")
         }
@@ -1278,11 +1274,9 @@ class LayerOverviewUtils extends Script {
                     }
                 }
 
-                const usedImages = Utils.Dedup(
-                    new ExtractImages(true, knownTagRenderings)
-                        .convertStrict(themeFile)
-                        .map((x) => x.path)
-                )
+                const usedImages = Lists.dedup(new ExtractImages(true, knownTagRenderings)
+                    .convertStrict(themeFile)
+                    .map((x) => x.path))
                 usedImages.sort()
 
                 themeFile["_usedImages"] = usedImages

scripts/generateLicenseInfo.ts

@@ -3,6 +3,7 @@ import SmallLicense from "../src/Models/smallLicense"
 import ScriptUtils from "./ScriptUtils"
 import Script from "./Script"
 import { Utils } from "../src/Utils"
+import { Lists } from "../src/Utils/Lists"
 
 const prompt = require("prompt-sync")()
 
@@ -297,9 +298,7 @@ export class GenerateLicenseInfo extends Script {
                 sources: license.sources,
             }
 
-            cloned.license = Utils.Dedup(
-                cloned.license.split(";").map((l) => this.toSPDXCompliantLicense(l))
-            ).join("; ")
+            cloned.license = Lists.dedup(cloned.license.split(";").map((l) => this.toSPDXCompliantLicense(l))).join("; ")
             if (cloned.license === "CC0-1.0; TRIVIAL") {
                 cloned.license = "TRIVIAL"
             }

scripts/generateNsiStats.ts

@@ -10,6 +10,7 @@ import Script from "./Script"
 import NameSuggestionIndex from "../src/Logic/Web/NameSuggestionIndex"
 import TagInfo from "../src/Logic/Web/TagInfo"
 import { TagsFilter } from "../src/Logic/Tags/TagsFilter"
+import { Lists } from "../src/Utils/Lists"
 
 class GenerateNsiStats extends Script {
     async createOptimizationFile(includeTags = true) {
@@ -139,9 +140,7 @@ class GenerateNsiStats extends Script {
             )
         }
         const nsi = await NameSuggestionIndex.singleton()
-        const allBrandNames: string[] = Utils.Dedup(
-            nsi.allPossible(<any>type).map((item) => item.tags[type])
-        )
+        const allBrandNames: string[] = Lists.dedup(nsi.allPossible(<any>type).map((item) => item.tags[type]))
         const batchSize = 50
         for (let i = 0; i < allBrandNames.length; i += batchSize) {
             console.warn(
@@ -152,7 +151,7 @@ class GenerateNsiStats extends Script {
             )
             let downloaded = 0
             await Promise.all(
-                Utils.TimesT(batchSize, async (j) => {
+                Utils.timesT(batchSize, async (j) => {
                     const brand = allBrandNames[i + j]
                     if (!allBrands[brand]) {
                         allBrands[brand] = {}

scripts/generateTaginfoProjectFiles.ts

@@ -5,6 +5,7 @@ import { readFileSync, writeFileSync } from "fs"
 import ThemeConfig from "../src/Models/ThemeConfig/ThemeConfig"
 import LayerConfig from "../src/Models/ThemeConfig/LayerConfig"
 import { Utils } from "../src/Utils"
+import { Lists } from "../src/Utils/Lists"
 
 /**
  * Generates all the files in "Docs/TagInfo". These are picked up by the taginfo project, showing a link to the mapcomplete theme if the key is used
@@ -269,7 +270,7 @@ function main() {
         }
         files.push(generateTagInfoEntry(layout))
     }
-    generateProjectsOverview(Utils.NoNull(files))
+    generateProjectsOverview(Lists.noNull(files))
 }
 
 main()

scripts/generateTranslations.ts

@@ -4,6 +4,7 @@ import { Utils } from "../src/Utils"
 import ScriptUtils from "./ScriptUtils"
 import Script from "./Script"
 import Constants from "../src/Models/Constants"
+import { Lists } from "../src/Utils/Lists"
 
 const knownLanguages = ["en", "nl", "de", "fr", "es", "gl", "ca"]
 const ignoreTerms = ["searchTerms"]
@@ -172,7 +173,7 @@ class TranslationPart {
                 languages.push(...(value as TranslationPart).knownLanguages())
             }
         }
-        return Utils.Dedup(languages)
+        return Lists.dedup(languages)
     }
 
     toJson(neededLanguage?: string): string {
@@ -351,7 +352,7 @@ function transformTranslation(
     }
 
     const values: string[] = []
-    const spaces = Utils.Times((_) => "  ", path.length + 1)
+    const spaces = Utils.times((_) => "  ", path.length + 1)
 
     for (const key in obj) {
         if (key === "#") {
@@ -381,7 +382,7 @@ function transformTranslation(
             let expr = `new Translation(${JSON.stringify(value)}, "core:${path.join(".")}.${key}")`
             if (subParts !== null) {
                 // convert '{to_substitute}' into 'to_substitute'
-                const types = Utils.Dedup(subParts.map((tp) => tp.substring(1, tp.length - 1)))
+                const types = Lists.dedup(subParts.map((tp) => tp.substring(1, tp.length - 1)))
                 const invalid = types.filter(
                     (part) => part.match(/^[a-z0-9A-Z_]+(\(.*\))?$/) == null
                 )
@@ -764,7 +765,7 @@ class GenerateTranslations extends Script {
                 "themes"
             )
 
-            const usedLanguages: string[] = Utils.Dedup(l1.concat(l2)).filter((v) => v !== "*")
+            const usedLanguages: string[] = Lists.dedup(l1.concat(l2)).filter((v) => v !== "*")
             usedLanguages.sort()
             fs.writeFileSync(
                 "./src/assets/used_languages.json",

scripts/nsiLogos.ts

@@ -128,7 +128,7 @@ class NsiLogos extends Script {
             }
 
             const results = await Promise.all(
-                Utils.TimesT(stepcount, (j) => j).map(async (j) => {
+                Utils.timesT(stepcount, (j) => j).map(async (j) => {
                     return await this.downloadLogo(items[i + j], type, basePath, alreadyDownloaded)
                 })
             )

scripts/velopark/diffToCsv.ts

@@ -1,7 +1,7 @@
 import Script from "../Script"
 import { readFileSync, writeFileSync } from "fs"
 import { OsmId } from "../../src/Models/OsmFeature"
-import { Utils } from "../../src/Utils"
+import { Lists } from "../../src/Utils/Lists"
 
 interface DiffItem {
     /**
@@ -34,7 +34,7 @@ export class DiffToCsv extends Script {
             JSON.parse(readFileSync(file, "utf8"))
         )
         const diffs = json.diffs
-        const allKeys = Utils.Dedup(diffs.flatMap((item) => item.diffs.map((d) => d.key)))
+        const allKeys = Lists.dedup(diffs.flatMap((item) => item.diffs.map((d) => d.key)))
         allKeys.sort()
 
         const header = [

scripts/velopark/veloParkToGeojson.ts

@@ -74,7 +74,7 @@ class VeloParkToGeojson extends Script {
         const batchSize = 50
         for (let i = 0; i < allVeloparkRaw.length; i += batchSize) {
             await Promise.all(
-                Utils.TimesT(batchSize, (j) => j).map(async (j) => {
+                Utils.timesT(batchSize, (j) => j).map(async (j) => {
                     const f = allVeloparkRaw[i + j]
                     if (!f) {
                         return

src/Logic/Actors/TitleHandler.ts

@@ -3,6 +3,7 @@ import Locale from "../../UI/i18n/Locale"
 import { Utils } from "../../Utils"
 import { Feature } from "geojson"
 import { SpecialVisualizationState } from "../../UI/SpecialVisualization"
+import { Lists } from "../../Utils/Lists"
 
 export default class TitleHandler {
     constructor(selectedElement: Store<Feature>, state: SpecialVisualizationState) {
@@ -22,7 +23,7 @@ export default class TitleHandler {
                 if (layer.title === undefined) {
                     return defaultTitle
                 }
-                const toRender = Utils.NoNull(layer?.title?.GetRenderValues(tags))
+                const toRender = Lists.noNull(layer?.title?.GetRenderValues(tags))
                 const titleUnsubbed = toRender[0]?.then?.textFor(lng)
                 if (titleUnsubbed === undefined) {
                     return defaultTitle

src/Logic/DetermineTheme.ts

@@ -17,6 +17,7 @@ import { ThemeConfigJson } from "../Models/ThemeConfig/Json/ThemeConfigJson"
 import { ValidateThemeAndLayers } from "../Models/ThemeConfig/Conversion/ValidateThemeAndLayers"
 import * as theme_overview from "../assets/generated/theme_overview.json"
 import * as favourite_layer from "../../assets/layers/favourite/favourite.json"
+import { Lists } from "../Utils/Lists"
 export default class DetermineTheme {
     private static readonly _knownImages = new Set(Array.from(licenses).map((l) => l.path))
     private static readonly loadCustomThemeParam = QueryParameters.GetQueryParameter(
@@ -143,27 +144,25 @@ export default class DetermineTheme {
         if (json.layers === undefined && json.tagRenderings !== undefined) {
             // We got fed a layer instead of a theme
             const layerConfig = <LayerConfigJson>json
-            let icon = Utils.NoNull(
-                layerConfig.pointRendering
-                    .flatMap((pr) => pr.marker)
-                    .map((iconSpec) => {
-                        if (!iconSpec) {
-                            return undefined
-                        }
-                        const icon = new TagRenderingConfig(<TagRenderingConfigJson>iconSpec.icon)
-                            .render.txt
-                        if (
-                            iconSpec.color === undefined ||
-                            icon.startsWith("http:") ||
-                            icon.startsWith("https:")
-                        ) {
-                            return icon
-                        }
-                        const color = new TagRenderingConfig(<TagRenderingConfigJson>iconSpec.color)
-                            .render.txt
-                        return icon + ":" + color
-                    })
-            ).join(";")
+            let icon = Lists.noNull(layerConfig.pointRendering
+              .flatMap((pr) => pr.marker)
+              .map((iconSpec) => {
+                if (!iconSpec) {
+                  return undefined
+                }
+                const icon = new TagRenderingConfig(<TagRenderingConfigJson>iconSpec.icon)
+                  .render.txt
+                if (
+                  iconSpec.color === undefined ||
+                  icon.startsWith("http:") ||
+                  icon.startsWith("https:")
+                ) {
+                  return icon
+                }
+                const color = new TagRenderingConfig(<TagRenderingConfigJson>iconSpec.color)
+                  .render.txt
+                return icon + ":" + color
+              })).join(";")
 
             if (!icon) {
                 icon = "./assets/svg/bug.svg"

src/Logic/FeatureSource/Sources/FeatureSourceMerger.ts

@@ -1,8 +1,8 @@
 import { Store, UIEventSource } from "../../UIEventSource"
 import { FeatureSource, IndexedFeatureSource, UpdatableFeatureSource } from "../FeatureSource"
 import { Feature } from "geojson"
-import { Utils } from "../../../Utils"
 import { OsmFeature } from "../../../Models/OsmFeature"
+import { Lists } from "../../../Utils/Lists"
 
 /**
  * The featureSourceMerger receives complete geometries from various sources.
@@ -23,7 +23,7 @@ export default class FeatureSourceMerger<Src extends FeatureSource = FeatureSour
     constructor(...sources: Src[]) {
         this._featuresById = new UIEventSource<Map<string, Feature>>(new Map<string, Feature>())
         this.featuresById = this._featuresById
-        sources = Utils.NoNull(sources)
+        sources = Lists.noNull(sources)
         for (const source of sources) {
             source.features.addCallback(() => {
                 this.addDataFromSources(sources)
@@ -69,7 +69,7 @@ export default class FeatureSourceMerger<Src extends FeatureSource = FeatureSour
     }
 
     protected addData(sources: Feature[][]) {
-        sources = Utils.NoNull(sources)
+        sources = Lists.noNull(sources)
         let somethingChanged = false
         const all: Map<string, Feature> = new Map()
         const unseen = new Set<string>()

src/Logic/FeatureSource/Sources/LastClickFeatureSource.ts

@@ -6,6 +6,7 @@ import BaseUIElement from "../../../UI/BaseUIElement"
 import { Utils } from "../../../Utils"
 import { OsmTags } from "../../../Models/OsmFeature"
 import { FeatureSource } from "../FeatureSource"
+import { Lists } from "../../../Utils/Lists"
 
 /**
  * Highly specialized feature source.
@@ -48,11 +49,9 @@ export class LastClickFeatureSource implements FeatureSource {
                 allPresets.push(html)
             }
 
-        this.renderings = Utils.Dedup(
-            allPresets.map((uiElem) =>
-                Utils.runningFromConsole ? "" : uiElem.ConstructElement().innerHTML
-            )
-        )
+        this.renderings = Lists.dedup(allPresets.map((uiElem) =>
+          Utils.runningFromConsole ? "" : uiElem.ConstructElement().innerHTML
+        ))
 
         this._features = new UIEventSource<Feature[]>([])
         this.features = this._features

src/Logic/FeatureSource/Sources/OsmFeatureSource.ts

@@ -8,6 +8,7 @@ import { Feature } from "geojson"
 import FeatureSourceMerger from "../Sources/FeatureSourceMerger"
 import OsmObjectDownloader from "../../Osm/OsmObjectDownloader"
 import FullNodeDatabaseSource from "../TiledFeatureSource/FullNodeDatabaseSource"
+import { Lists } from "../../../Utils/Lists"
 
 /**
  * If a tile is needed (requested via the UIEventSource in the constructor), will download the appropriate tile and pass it via 'handleTile'
@@ -173,7 +174,7 @@ export default class OsmFeatureSource extends FeatureSourceMerger {
                 for (let i = 0; i < features.length; i++) {
                     features[i] = await this.patchIncompleteRelations(features[i], <any>osmJson)
                 }
-                features = Utils.NoNull(features)
+                features = Lists.noNull(features)
                 features.forEach((f) => {
                     f.properties["_backend"] = this._backend
                 })

src/Logic/FeatureSource/Sources/OverpassFeatureSource.ts

@@ -8,6 +8,7 @@ import { Utils } from "../../../Utils"
 import { TagsFilter } from "../../Tags/TagsFilter"
 import { BBox } from "../../BBox"
 import { OsmTags } from "../../../Models/OsmFeature"
+import { Lists } from "../../../Utils/Lists"
 
 ("use strict")
 
@@ -199,7 +200,7 @@ export default class OverpassFeatureSource implements UpdatableFeatureSource {
      */
     private GetFilter(interpreterUrl: string, layersToDownload: LayerConfig[]): Overpass {
         let filters: TagsFilter[] = layersToDownload.map((layer) => layer.source.osmTags)
-        filters = Utils.NoNull(filters)
+        filters = Lists.noNull(filters)
         if (filters.length === 0) {
             return undefined
         }

src/Logic/FeatureSource/TiledFeatureSource/LineSourceMerger.ts

@@ -5,6 +5,7 @@ import { Utils } from "../../../Utils"
 import { Feature, MultiLineString, Position } from "geojson"
 import { GeoOperations } from "../../GeoOperations"
 import { UpdatableDynamicTileSource } from "./DynamicTileSource"
+import { Lists } from "../../../Utils/Lists"
 
 /**
  * The PolygonSourceMerger receives various small pieces of bigger polygons and stitches them together.
@@ -32,7 +33,7 @@ export class LineSourceMerger extends UpdatableDynamicTileSource<
     }
 
     protected addDataFromSources(sources: FeatureSourceForTile[]) {
-        sources = Utils.NoNull(sources)
+        sources = Lists.noNull(sources)
         const all: Map<string, Feature<MultiLineString>> = new Map()
         const currentZoom = this._zoomlevel?.data ?? 0
         for (const source of sources) {

src/Logic/FeatureSource/TiledFeatureSource/PolygonSourceMerger.ts

@@ -1,10 +1,10 @@
 import { FeatureSourceForTile, UpdatableFeatureSource } from "../FeatureSource"
 import { Store } from "../../UIEventSource"
 import { BBox } from "../../BBox"
-import { Utils } from "../../../Utils"
 import { Feature } from "geojson"
 import { GeoOperations } from "../../GeoOperations"
 import { UpdatableDynamicTileSource } from "./DynamicTileSource"
+import { Lists } from "../../../Utils/Lists"
 
 /**
  * The PolygonSourceMerger receives various small pieces of bigger polygons and stitches them together.
@@ -29,7 +29,7 @@ export class PolygonSourceMerger extends UpdatableDynamicTileSource<
     }
 
     protected addDataFromSources(sources: FeatureSourceForTile[]) {
-        sources = Utils.NoNull(sources)
+        sources = Lists.noNull(sources)
         const all: Map<string, Feature> = new Map()
         const zooms: Map<string, number> = new Map()
 

src/Logic/GeoOperations.ts

@@ -14,6 +14,7 @@ import {
 } from "geojson"
 import { Tiles } from "../Models/TileRange"
 import { Utils } from "../Utils"
+import { Lists } from "../Utils/Lists"
 
 ("use strict")
 
@@ -597,7 +598,7 @@ export class GeoOperations {
                 newFeatures.push(intersectionPart)
             }
         }
-        return Utils.NoNull(newFeatures)
+        return Lists.noNull(newFeatures)
     }
 
     public static toGpx(
@@ -610,7 +611,7 @@ export class GeoOperations {
         if (title === undefined || title === "") {
             title = "Uploaded with MapComplete"
         }
-        title = Utils.EncodeXmlValue(title)
+        title = Utils.encodeXmlValue(title)
         const trackPoints: string[] = []
         let locationsWithMeta: Feature<Point>[]
         if (Array.isArray(locations)) {
@@ -664,7 +665,7 @@ export class GeoOperations {
         if (title === undefined || title === "") {
             title = "Created with MapComplete"
         }
-        title = Utils.EncodeXmlValue(title)
+        title = Utils.encodeXmlValue(title)
         const trackPoints: string[] = []
         for (const l of locations) {
             let trkpt = `    <wpt lat="${l.geometry.coordinates[1]}" lon="${l.geometry.coordinates[0]}">`

src/Logic/ImageProviders/AllImageProviders.ts

@@ -8,6 +8,7 @@ import { WikidataImageProvider } from "./WikidataImageProvider"
 import Panoramax from "./Panoramax"
 import { Utils } from "../../Utils"
 import { ServerSourceInfo } from "../../Models/SourceOverview"
+import { Lists } from "../../Utils/Lists"
 
 /**
  * A generic 'from the interwebz' image picker, without attribution
@@ -101,9 +102,7 @@ export default class AllImageProviders {
             Mapillary.singleton,
             AllImageProviders.genericImageProvider,
         ]
-        const allPrefixes = Utils.Dedup(
-            prefixes ?? [].concat(...sources.map((s) => s.defaultKeyPrefixes))
-        )
+        const allPrefixes = Lists.dedup(prefixes ?? [].concat(...sources.map((s) => s.defaultKeyPrefixes)))
         for (const prefix of allPrefixes) {
             for (const k in tags) {
                 const v = tags[k]
@@ -149,7 +148,7 @@ export default class AllImageProviders {
             allSources.push(singleSource)
         }
         const source = Stores.concat(allSources).map((result) => {
-            const all = Utils.concat(result)
+            const all = result.flatMap(x => x)
             return Utils.DedupOnId(all, (i) => [i?.id, i?.url, i?.alt_id])
         })
         this._cachedImageStores[cachekey] = source

src/Logic/ImageProviders/ImageProvider.ts

@@ -4,6 +4,7 @@ import { Utils } from "../../Utils"
 import { Feature, Point } from "geojson"
 import { ServerSourceInfo } from "../../Models/SourceOverview"
 import { ComponentType } from "svelte/types/runtime/internal/dev"
+import { Lists } from "../../Utils/Lists"
 
 export interface ProvidedImage {
     url: string
@@ -92,7 +93,7 @@ export default abstract class ImageProvider {
             ) {
                 continue
             }
-            const values = Utils.NoEmpty(tags[key]?.split(";")?.map((v) => v.trim()) ?? [])
+            const values = Lists.noEmpty(tags[key]?.split(";")?.map((v) => v.trim()) ?? [])
             for (const value of values) {
                 if (seenValues.has(value)) {
                     continue

src/Logic/ImageProviders/ImageUploadManager.ts

@@ -15,6 +15,7 @@ import NoteCommentElement from "../../UI/Popup/Notes/NoteCommentElement"
 import OsmObjectDownloader from "../Osm/OsmObjectDownloader"
 import ExifReader from "exifreader"
 import { Utils } from "../../Utils"
+import { Lists } from "../../Utils/Lists"
 
 /**
  * The ImageUploadManager has a
@@ -176,7 +177,7 @@ export class ImageUploadManager {
             const failed: Set<ImageUploadArguments> = new Set()
             this.uploadingAll = true
             do {
-                queue = Utils.NoNull(this._queue.imagesInQueue.data ?? []).filter(
+                queue = Lists.noNull(this._queue.imagesInQueue.data ?? []).filter(
                     (item) => !failed.has(item)
                 )
 

src/Logic/ImageProviders/Mapillary.ts

@@ -7,6 +7,7 @@ import { Feature, Point } from "geojson"
 import { Store, UIEventSource } from "../UIEventSource"
 import { ServerSourceInfo } from "../../Models/SourceOverview"
 import { ComponentType } from "svelte/types/runtime/internal/dev"
+import { Lists } from "../../Utils/Lists"
 
 export class Mapillary extends ImageProvider {
     public static readonly singleton = new Mapillary()
@@ -74,11 +75,9 @@ export class Mapillary extends ImageProvider {
             pKey,
         }
         const baselink = `https://www.mapillary.com/app/?`
-        const paramsStr = Utils.NoNull(
-            Object.keys(params).map((k) =>
-                params[k] === undefined ? undefined : k + "=" + params[k]
-            )
-        )
+        const paramsStr = Lists.noNull(Object.keys(params).map((k) =>
+          params[k] === undefined ? undefined : k + "=" + params[k]
+        ))
         return baselink + paramsStr.join("&")
     }
 

src/Logic/ImageProviders/WikidataImageProvider.ts

@@ -6,6 +6,7 @@ import { Utils } from "../../Utils"
 import { Feature, Point } from "geojson"
 import { ServerSourceInfo } from "../../Models/SourceOverview"
 import { ComponentType } from "svelte/types/runtime/internal/dev"
+import { Lists } from "../../Utils/Lists"
 
 export class WikidataImageProvider extends ImageProvider {
     public static readonly singleton = new WikidataImageProvider()
@@ -13,7 +14,7 @@ export class WikidataImageProvider extends ImageProvider {
     public readonly name = "Wikidata"
     private static readonly keyBlacklist: ReadonlySet<string> = new Set([
         "mapillary",
-        ...Utils.Times((i) => "mapillary:" + i, 10),
+        ...Utils.times((i) => "mapillary:" + i, 10),
     ])
 
     private constructor() {
@@ -60,7 +61,7 @@ export class WikidataImageProvider extends ImageProvider {
             const promises = WikimediaImageProvider.singleton.ExtractUrls(undefined, commons)
             allImages.push(promises)
         }
-        const resolved = await Promise.all(Utils.NoNull(allImages))
+        const resolved = await Promise.all(Lists.noNull(allImages))
         const flattened = resolved.flatMap((x) => x)
         if (flattened.length === 1) {
             flattened[0].originalAttribute = { key, value }

src/Logic/Osm/Actions/DeleteAction.ts

@@ -7,8 +7,8 @@ import { TagsFilter } from "../../Tags/TagsFilter"
 import { And } from "../../Tags/And"
 import { Tag } from "../../Tags/Tag"
 import { OsmId } from "../../../Models/OsmFeature"
-import { Utils } from "../../../Utils"
 import OsmObjectDownloader from "../OsmObjectDownloader"
+import { Lists } from "../../../Utils/Lists"
 
 export default class DeleteAction extends OsmChangeAction {
     private readonly _softDeletionTags: TagsFilter
@@ -50,12 +50,12 @@ export default class DeleteAction extends OsmChangeAction {
             this._softDeletionTags = softDeletionTags
         } else {
             this._softDeletionTags = new And(
-                Utils.NoNull([
-                    softDeletionTags,
-                    new Tag(
-                        "fixme",
-                        `A mapcomplete user marked this feature to be deleted (${meta.specialMotivation})`
-                    ),
+                Lists.noNull([
+                  softDeletionTags,
+                  new Tag(
+                    "fixme",
+                    `A mapcomplete user marked this feature to be deleted (${meta.specialMotivation})`
+                  ),
                 ])
             )
         }

src/Logic/Osm/Actions/ReplaceGeometryAction.ts

@@ -13,6 +13,7 @@ import { Utils } from "../../../Utils"
 import { OsmConnection } from "../OsmConnection"
 import { Feature, Geometry, LineString, Point } from "geojson"
 import FullNodeDatabaseSource from "../../FeatureSource/TiledFeatureSource/FullNodeDatabaseSource"
+import { Lists } from "../../../Utils/Lists"
 
 export default class ReplaceGeometryAction extends OsmChangeAction implements PreviewableAction {
     /**
@@ -164,7 +165,7 @@ export default class ReplaceGeometryAction extends OsmChangeAction implements Pr
             preview.push(feature)
         })
 
-        return StaticFeatureSource.fromGeojson(Utils.NoNull(preview))
+        return StaticFeatureSource.fromGeojson(Lists.noNull(preview))
     }
 
     /**
@@ -317,7 +318,7 @@ export default class ReplaceGeometryAction extends OsmChangeAction implements Pr
                 candidate = undefined
                 moveDistance = Infinity
                 distances.forEach((distances, nodeId) => {
-                    const minDist = Math.min(...Utils.NoNull(distances))
+                    const minDist = Math.min(...(Lists.noNull(distances)))
                     if (moveDistance > minDist) {
                         // We have found a candidate to move
                         candidate = nodeId

src/Logic/Osm/Changes.ts

@@ -18,6 +18,7 @@ import DeleteAction from "./Actions/DeleteAction"
 import MarkdownUtils from "../../Utils/MarkdownUtils"
 import FeaturePropertiesStore from "../FeatureSource/Actors/FeaturePropertiesStore"
 import { Feature, Point } from "geojson"
+import { Lists } from "../../Utils/Lists"
 
 /**
  * Handles all changes made to OSM.
@@ -260,7 +261,7 @@ export class Changes {
     }
 
     public static GetNeededIds(changes: ChangeDescription[]) {
-        return Utils.Dedup(changes.filter((c) => c.id >= 0).map((c) => c.type + "/" + c.id))
+        return Lists.dedup(changes.filter((c) => c.id >= 0).map((c) => c.type + "/" + c.id))
     }
 
     /**
@@ -467,8 +468,8 @@ export class Changes {
             if (change.changes !== undefined) {
                 switch (change.type) {
                     case "node": {
-                        const nlat = Utils.Round7(change.changes.lat)
-                        const nlon = Utils.Round7(change.changes.lon)
+                        const nlat = Utils.round7(change.changes.lat)
+                        const nlon = Utils.round7(change.changes.lon)
                         const n = <OsmNode>obj
                         if (n.lat !== nlat || n.lon !== nlon) {
                             n.lat = nlat
@@ -717,11 +718,9 @@ export class Changes {
          *  We _do not_ pass in the Changes object itself - we want the data from OSM directly in order to apply the changes
          */
         const downloader = new OsmObjectDownloader(this.backend, undefined)
-        const osmObjects = Utils.NoNull(
-            await Promise.all<{ id: string; osmObj: OsmObject | "deleted" }>(
-                neededIds.map((id) => this.getOsmObject(id, downloader))
-            )
-        )
+        const osmObjects = Lists.noNull(await Promise.all<{ id: string; osmObj: OsmObject | "deleted" }>(
+          neededIds.map((id) => this.getOsmObject(id, downloader))
+        ))
 
         // Drop changes to deleted items
         for (const { osmObj, id } of osmObjects) {
@@ -801,7 +800,7 @@ export class Changes {
                 value: descr.meta.specialMotivation,
             }))
 
-        const distances = Utils.NoNull(pending.map((descr) => descr.meta.distanceToObject))
+        const distances = Lists.noNull(pending.map((descr) => descr.meta.distanceToObject))
         distances.sort((a, b) => a - b)
         const perBinCount = Constants.distanceToChangeObjectBins.map(() => 0)
 
@@ -816,23 +815,21 @@ export class Changes {
             }
         }
 
-        const perBinMessage = Utils.NoNull(
-            perBinCount.map((count, i) => {
-                if (count === 0) {
-                    return undefined
-                }
-                const maxD = maxDistances[i]
-                let key = `change_within_${maxD}m`
-                if (maxD === Number.MAX_VALUE) {
-                    key = `change_over_${maxDistances[i - 1]}m`
-                }
-                return {
-                    key,
-                    value: count,
-                    aggregate: true,
-                }
-            })
-        )
+        const perBinMessage = Lists.noNull(perBinCount.map((count, i) => {
+          if (count === 0) {
+            return undefined
+          }
+          const maxD = maxDistances[i]
+          let key = `change_within_${maxD}m`
+          if (maxD === Number.MAX_VALUE) {
+            key = `change_over_${maxDistances[i - 1]}m`
+          }
+          return {
+            key,
+            value: count,
+            aggregate: true,
+          }
+        }))
 
         // This method is only called with changedescriptions for this theme
         const theme = pending[0].meta.theme

src/Logic/Osm/ChangesetHandler.ts

@@ -8,6 +8,7 @@ import { Utils } from "../../Utils"
 import FeaturePropertiesStore from "../FeatureSource/Actors/FeaturePropertiesStore"
 import { AndroidPolyfill } from "../Web/AndroidPolyfill"
 import ImageUploadQueue from "../ImageProviders/ImageUploadQueue"
+import { Lists } from "../../Utils/Lists"
 
 export interface ChangesetTag {
     key: string
@@ -393,7 +394,7 @@ export class ChangesetHandler {
     private async UpdateTags(csId: number, tags: ChangesetTag[]) {
         tags = ChangesetHandler.removeDuplicateMetaTags(tags)
 
-        tags = Utils.NoNull(tags).filter(
+        tags = Lists.noNull(tags).filter(
             (tag) =>
                 tag.key !== undefined &&
                 tag.value !== undefined &&

src/Logic/Osm/OsmObject.ts

@@ -150,7 +150,7 @@ export abstract class OsmObject {
             }
             const v = this.tags[key]
             if (v !== "" && v !== undefined) {
-                tags += `        <tag k="${Utils.EncodeXmlValue(key)}" v="${Utils.EncodeXmlValue(
+                tags += `        <tag k="${Utils.encodeXmlValue(key)}" v="${Utils.encodeXmlValue(
                     this.tags[key]
                 )}"/>
 `

src/Logic/Osm/OsmPreferences.ts

@@ -2,6 +2,7 @@ import { Store, UIEventSource } from "../UIEventSource"
 import { OsmConnection } from "./OsmConnection"
 import { LocalStorageSource } from "../Web/LocalStorageSource"
 import { Utils } from "../../Utils"
+import { Lists } from "../../Utils/Lists"
 import OSMAuthInstance = OSMAuth.osmAuth
 
 export class OsmPreferences {
@@ -270,7 +271,7 @@ export class OsmPreferences {
             return
         }
         // _All_ keys are deleted first, to avoid pending parts
-        const keysToDelete = Utils.Dedup(OsmPreferences.keysStartingWith(this.seenKeys, k))
+        const keysToDelete = Lists.dedup(OsmPreferences.keysStartingWith(this.seenKeys, k))
         if (v === null || v === undefined || v === "" || v === "undefined" || v === "null") {
             for (const k of keysToDelete) {
                 await this.deleteKeyDirectly(k)

src/Logic/Search/CombinedSearcher.ts

@@ -13,7 +13,7 @@ export default class CombinedSearcher implements GeocodingProvider {
      * @param providers
      */
     constructor(...providers: ReadonlyArray<GeocodingProvider>) {
-        this._providers = Utils.NoNull(providers)
+        this._providers = Utils.noNull(providers)
         this._providersWithSuggest = this._providers.filter((pr) => pr.suggest !== undefined)
     }
 

src/Logic/Search/CoordinateSearch.ts

@@ -1,7 +1,7 @@
 import GeocodingProvider, { GeocodeResult } from "./GeocodingProvider"
-import { Utils } from "../../Utils"
 import { ImmutableStore, Store } from "../UIEventSource"
 import CoordinateParser from "coordinate-parser"
+import { Lists } from "../../Utils/Lists"
 
 /**
  * A simple search-class which interprets possible locations
@@ -71,13 +71,11 @@ export default class CoordinateSearch implements GeocodingProvider {
      * results[0] // => {lat: 51.047977, lon: 3.51184, "display_name": "lon: 3.51184, lat: 51.047977",  "category": "coordinate","osm_id": "3.51184/51.047977", "source": "coordinate:latlon"}
      */
     private directSearch(query: string): GeocodeResult[] {
-        const matches = Utils.NoNull(CoordinateSearch.latLonRegexes.map((r) => query.match(r))).map(
+        const matches = Lists.noNull(CoordinateSearch.latLonRegexes.map((r) => query.match(r))).map(
             (m) => CoordinateSearch.asResult(m[2], m[1], "latlon")
         )
 
-        const matchesLonLat = Utils.NoNull(
-            CoordinateSearch.lonLatRegexes.map((r) => query.match(r))
-        ).map((m) => CoordinateSearch.asResult(m[1], m[2], "lonlat"))
+        const matchesLonLat = Lists.noNull(CoordinateSearch.lonLatRegexes.map((r) => query.match(r))).map((m) => CoordinateSearch.asResult(m[1], m[2], "lonlat"))
         const init = matches.concat(matchesLonLat)
         if (init.length > 0) {
             return init

src/Logic/Search/FilterSearch.ts

@@ -4,6 +4,7 @@ import FilterConfig, { FilterConfigOption } from "../../Models/ThemeConfig/Filte
 import LayerConfig from "../../Models/ThemeConfig/LayerConfig"
 import LayerState from "../State/LayerState"
 import ThemeConfig from "../../Models/ThemeConfig/ThemeConfig"
+import { Lists } from "../../Utils/Lists"
 
 export type FilterSearchResult = {
     option: FilterConfigOption
@@ -64,7 +65,7 @@ export default class FilterSearch {
                     ].flatMap((term) => [term, ...(term?.split(" ") ?? [])])
                     terms = terms.map((t) => Utils.simplifyStringForSearch(t))
                     terms.push(option.emoji)
-                    Utils.NoNullInplace(terms)
+                    Lists.noNullInplace(terms)
                     const distances = queries.flatMap((query) =>
                         terms.map((entry) => {
                             const d = Utils.levenshteinDistance(query, entry.slice(0, query.length))

src/Logic/Search/LocalElementSearch.ts

@@ -5,6 +5,7 @@ import { Feature } from "geojson"
 import { GeoOperations } from "../GeoOperations"
 import { ImmutableStore, Store, Stores } from "../UIEventSource"
 import OpenStreetMapIdSearch from "./OpenStreetMapIdSearch"
+import { Lists } from "../../Utils/Lists"
 
 type IntermediateResult = {
     feature: Feature
@@ -41,13 +42,13 @@ export default class LocalElementSearch implements GeocodingProvider {
 
         for (const feature of features) {
             const props = feature.properties
-            const searchTerms: string[] = Utils.NoNull([
-                props.name,
-                props.alt_name,
-                props.local_name,
-                props["addr:street"] && props["addr:number"]
-                    ? props["addr:street"] + props["addr:number"]
-                    : undefined,
+            const searchTerms: string[] = Lists.noNull([
+              props.name,
+              props.alt_name,
+              props.local_name,
+              props["addr:street"] && props["addr:number"]
+                ? props["addr:street"] + props["addr:number"]
+                : undefined,
             ])
 
             let levehnsteinD: number

src/Logic/Search/OpenStreetMapIdSearch.ts

@@ -1,8 +1,8 @@
 import { Store, UIEventSource } from "../UIEventSource"
 import GeocodingProvider, { GeocodeResult, GeocodingOptions } from "./GeocodingProvider"
 import { OsmId } from "../../Models/OsmFeature"
-import { Utils } from "../../Utils"
 import OsmObjectDownloader from "../Osm/OsmObjectDownloader"
+import { Lists } from "../../Utils/Lists"
 
 export default class OpenStreetMapIdSearch implements GeocodingProvider {
     private static readonly regex =
@@ -76,7 +76,7 @@ export default class OpenStreetMapIdSearch implements GeocodingProvider {
     async search(query: string, _: GeocodingOptions): Promise<GeocodeResult[]> {
         if (!isNaN(Number(query))) {
             const n = Number(query)
-            return Utils.NoNullInplace(
+            return Lists.noNullInplace(
                 await Promise.all([
                     this.getInfoAbout(`node/${n}`).catch(() => undefined),
                     this.getInfoAbout(`way/${n}`).catch(() => undefined),

src/Logic/Search/SearchUtils.ts

@@ -1,6 +1,7 @@
 import Locale from "../../UI/i18n/Locale"
 import { Utils } from "../../Utils"
 import ThemeSearch from "./ThemeSearch"
+import { Lists } from "../../Utils/Lists"
 
 export default class SearchUtils {
     /** Applies special search terms, such as 'studio', 'osmcha', ...
@@ -66,7 +67,7 @@ export default class SearchUtils {
         } else {
             terms = (keywords[language] ?? []).concat(keywords["*"])
         }
-        const termsAll = Utils.NoNullInplace(terms).flatMap((t) => t.split(" "))
+        const termsAll = Lists.noNullInplace(terms).flatMap((t) => t.split(" "))
 
         let distanceSummed = 0
         for (let i = 0; i < queryParts.length; i++) {

src/Logic/Search/ThemeSearch.ts

@@ -8,6 +8,7 @@ import Fuse, { IFuseOptions } from "fuse.js"
 import Constants from "../../Models/Constants"
 import Locale from "../../UI/i18n/Locale"
 import { Utils } from "../../Utils"
+import { Lists } from "../../Utils/Lists"
 
 export class ThemeSearchIndex {
     private readonly themeIndex: Fuse<MinimalThemeInformation>
@@ -18,7 +19,7 @@ export class ThemeSearchIndex {
         themesToSearch?: MinimalThemeInformation[],
         layersToIgnore: string[] = []
     ) {
-        const themes = Utils.NoNull(themesToSearch ?? ThemeSearch.officialThemes?.themes)
+        const themes = Utils.noNull(themesToSearch ?? ThemeSearch.officialThemes?.themes)
         if (!themes) {
             throw "No themes loaded. Did generate:layeroverview fail?"
         }
@@ -100,7 +101,7 @@ export class ThemeSearchIndex {
         const knownHidden: Store<string[]> = Stores.listStabilized(
             UserRelatedState.initDiscoveredHiddenThemes(state.osmConnection)
                 .stabilized(1000)
-                .map((list) => Utils.Dedup(list))
+                .map((list) => Lists.dedup(list))
         )
         const otherThemes: MinimalThemeInformation[] = ThemeSearch.officialThemes.themes.filter(
             (th) => th.id !== state.theme.id

src/Logic/State/SearchState.ts

@@ -18,8 +18,8 @@ import { Feature } from "geojson"
 import OpenLocationCodeSearch from "../Search/OpenLocationCodeSearch"
 import { BBox } from "../BBox"
 import { QueryParameters } from "../Web/QueryParameters"
-import { Utils } from "../../Utils"
 import { NominatimGeocoding } from "../Search/NominatimGeocoding"
+import { Lists } from "../../Utils/Lists"
 
 export default class SearchState {
     public readonly feedback: UIEventSource<Translation> = new UIEventSource<Translation>(undefined)
@@ -83,7 +83,7 @@ export default class SearchState {
                         }
                     })))
         this.runningEngines = isRunningPerEngine.bindD(
-            listOfSources => Stores.concat(listOfSources).mapD(list => Utils.NoNull(list)))
+            listOfSources => Stores.concat(listOfSources).mapD(list => Lists.noNull(list)))
 
 
         this.failedEngines = suggestionsListWithSource
@@ -102,7 +102,7 @@ export default class SearchState {
                             return []
                         }
                     }),
-                ))).map(list => Utils.NoNull(list?.flatMap(x => x) ?? []))
+                ))).map(list => Lists.noNull(list?.flatMap(x => x) ?? []))
 
         this.suggestionsSearchRunning = this.runningEngines.map(running => running?.length > 0)
         this.suggestions = suggestionsList.bindD((suggestions) =>

src/Logic/State/UserRelatedState.ts

@@ -20,6 +20,7 @@ import Showdown from "showdown"
 import { LocalStorageSource } from "../Web/LocalStorageSource"
 import { GeocodeResult } from "../Search/GeocodingProvider"
 import Translations from "../../UI/i18n/Translations"
+import { Lists } from "../../Utils/Lists"
 
 class RoundRobinStore<T> {
     private readonly _store: UIEventSource<T[]>
@@ -41,7 +42,7 @@ class RoundRobinStore<T> {
     private set() {
         const v = this._store.data
         const i = this._index.data
-        const newList = Utils.NoNull(v.slice(i + 1, v.length).concat(v.slice(0, i + 1)))
+        const newList = Lists.noNull(v.slice(i + 1, v.length).concat(v.slice(0, i + 1)))
         if (newList.length === 0) {
             this._index.set(0)
         }
@@ -89,7 +90,7 @@ export class OptionallySyncedHistory<T extends object | string> {
             defaultValue: "sync",
         })
 
-        this.syncedBackingStore = UIEventSource.concat(Utils.TimesT(maxHistory, (i) => {
+        this.syncedBackingStore = UIEventSource.concat(Utils.timesT(maxHistory, (i) => {
             const pref = osmconnection.getPreference(key + "-hist-" + i + "-")
             return UIEventSource.asObject<T>(pref, undefined)
         }))
@@ -555,27 +556,25 @@ export default class UserRelatedState {
 
                     const untranslated = missing.untranslated.get(language) ?? []
                     const hasMissingTheme = untranslated.some((k) => k.startsWith("themes:"))
-                    const missingLayers = Utils.Dedup(
-                        untranslated
-                            .filter((k) => k.startsWith("layers:"))
-                            .map((k) => k.slice("layers:".length).split(".")[0])
-                    )
+                    const missingLayers = Lists.dedup(untranslated
+                        .filter((k) => k.startsWith("layers:"))
+                        .map((k) => k.slice("layers:".length).split(".")[0]))
 
-                    const zenLinks: { link: string; id: string }[] = Utils.NoNull([
-                        hasMissingTheme
-                            ? {
-                                  id: "theme:" + layout.id,
-                                  link: Translations.hrefToWeblateZen(
-                                      language,
-                                      "themes",
-                                      layout.id
-                                  ),
-                              }
-                            : undefined,
-                        ...missingLayers.map((id) => ({
-                            id: "layer:" + id,
-                            link: Translations.hrefToWeblateZen(language, "layers", id),
-                        })),
+                    const zenLinks: { link: string; id: string }[] = Lists.noNull([
+                      hasMissingTheme
+                        ? {
+                          id: "theme:" + layout.id,
+                          link: Translations.hrefToWeblateZen(
+                            language,
+                            "themes",
+                            layout.id
+                          ),
+                        }
+                        : undefined,
+                      ...missingLayers.map((id) => ({
+                        id: "layer:" + id,
+                        link: Translations.hrefToWeblateZen(language, "layers", id),
+                      })),
                     ])
                     const untranslated_count = untranslated.length
                     amendedPrefs.data["_translation_total"] = "" + total

src/Logic/Tags/TagUtils.ts

@@ -11,6 +11,7 @@ import key_counts from "../../assets/key_totals.json"
 
 import { ConversionContext } from "../../Models/ThemeConfig/Conversion/ConversionContext"
 import { FlatTag, TagsFilterClosed, UploadableTag } from "./TagTypes"
+import { Lists } from "../../Utils/Lists"
 
 type Tags = Record<string, string>
 
@@ -383,7 +384,7 @@ export class TagUtils {
         const keyValues = TagUtils.SplitKeys(tagsFilters)
         const and: UploadableTag[] = []
         for (const key in keyValues) {
-            const values = Utils.Dedup(keyValues[key]).filter((v) => v !== "")
+            const values = Lists.dedup(keyValues[key]).filter((v) => v !== "")
             values.sort()
             and.push(new Tag(key, values.join(";")))
         }
@@ -742,7 +743,7 @@ export class TagUtils {
         if (level === undefined || level === null) {
             return []
         }
-        let spec = Utils.NoNull([level])
+        let spec = Lists.noNull([level])
         spec = [].concat(...spec.map((s) => s?.split(";")))
         spec = [].concat(
             ...spec.map((s) => {
@@ -764,7 +765,7 @@ export class TagUtils {
                 return values
             })
         )
-        return Utils.NoNull(spec)
+        return Lists.noNull(spec)
     }
 
     private static ParseTagUnsafe(json: TagConfigJson, context: string = ""): TagsFilterClosed {
@@ -919,10 +920,10 @@ export class TagUtils {
 
     public static GetPopularity(tag: TagsFilter): number | undefined {
         if (tag instanceof And) {
-            return Math.min(...Utils.NoNull(tag.and.map((t) => TagUtils.GetPopularity(t)))) - 1
+            return Math.min(...(Lists.noNull(tag.and.map((t) => TagUtils.GetPopularity(t))))) - 1
         }
         if (tag instanceof Or) {
-            return Math.max(...Utils.NoNull(tag.or.map((t) => TagUtils.GetPopularity(t)))) + 1
+            return Math.max(...(Lists.noNull(tag.or.map((t) => TagUtils.GetPopularity(t))))) + 1
         }
         if (tag instanceof Tag) {
             return TagUtils.GetCount(tag.key, tag.value)

src/Logic/Web/NameSuggestionIndex.ts

@@ -9,6 +9,7 @@ import { RegexTag } from "../Tags/RegexTag"
 import { TagConfigJson } from "../../Models/ThemeConfig/Json/TagConfigJson"
 import { TagUtils } from "../Tags/TagUtils"
 import Constants from "../../Models/Constants"
+import { Lists } from "../../Utils/Lists"
 
 /**
  * Main name suggestion index file
@@ -103,7 +104,7 @@ export default class NameSuggestionIndex {
                 }
             })
         )
-        stats = Utils.NoNull(stats)
+        stats = Lists.noNull(stats)
         if (stats.length === 1) {
             return stats[0]
         }
@@ -282,7 +283,7 @@ export default class NameSuggestionIndex {
         }
         const keys = Object.keys(this.nsiFile.nsi)
         const all = keys.map((k) => this.nsiFile.nsi[k].properties.path.split("/")[0])
-        this._supportedTypes = Utils.Dedup(all).map((s) => {
+        this._supportedTypes = Lists.dedup(all).map((s) => {
             if (s.endsWith("s")) {
                 s = s.substring(0, s.length - 1)
             }

src/Logic/Web/Wikidata.ts

@@ -2,6 +2,7 @@ import { Utils } from "../../Utils"
 import { Store, UIEventSource } from "../UIEventSource"
 import { SimplifiedClaims, WBK } from "wikibase-sdk"
 import { ServerSourceInfo } from "../../Models/SourceOverview"
+import { Lists } from "../../Utils/Lists"
 
 export class WikidataResponse {
     public readonly id: string
@@ -294,7 +295,7 @@ export default class Wikidata {
                 }
             })
         )
-        return Utils.NoNull(maybeResponses.map((r) => <WikidataResponse>r["success"]))
+        return Lists.noNull(maybeResponses.map((r) => <WikidataResponse>r["success"]))
     }
 
     /**

src/Models/FilteredLayer.ts

@@ -9,6 +9,7 @@ import { Utils } from "../Utils"
 import { TagUtils } from "../Logic/Tags/TagUtils"
 import { And } from "../Logic/Tags/And"
 import { GlobalFilter } from "./GlobalFilter"
+import { Lists } from "../Utils/Lists"
 
 export default class FilteredLayer {
     /**
@@ -287,7 +288,7 @@ export default class FilteredLayer {
             }
             needed.push(filter.options[state.data].osmTags)
         }
-        needed = Utils.NoNull(needed)
+        needed = Lists.noNull(needed)
         if (needed.length == 0) {
             return undefined
         }

src/Models/SourceOverview.ts

@@ -11,9 +11,10 @@ import { ThemeConfigJson } from "../../src/Models/ThemeConfig/Json/ThemeConfigJs
 import SpecialVisualizations from "../../src/UI/SpecialVisualizations"
 import ValidationUtils from "../../src/Models/ThemeConfig/Conversion/ValidationUtils"
 import {
-    QuestionableTagRenderingConfigJson
+    QuestionableTagRenderingConfigJson,
 } from "../../src/Models/ThemeConfig/Json/QuestionableTagRenderingConfigJson"
 import { LayerConfigJson } from "../../src/Models/ThemeConfig/Json/LayerConfigJson"
+import { Lists } from "../Utils/Lists"
 
 export interface ServerSourceInfo {
     url: string
@@ -81,7 +82,7 @@ export class SourceOverview {
 
         const geojsonSources: string[] = layout?.layers?.map((l) => l.source?.geojsonSource) ?? []
 
-        return Utils.NoNull(apiUrls.concat(...geojsonSources)).filter((item) => {
+        return Lists.noNull(apiUrls.concat(...geojsonSources)).filter((item) => {
             if (typeof item === "string") {
                 return true
             }
@@ -117,7 +118,7 @@ export class SourceOverview {
                         "Background layer source or supporting sources for " + f.properties.id,
                     trigger: ["specific_feature"],
                     category: "maplayer",
-                    moreInfo: Utils.NoEmpty([
+                    moreInfo: Lists.noEmpty([
                         "https://github.com/osmlab/editor-layer-index",
                         f.properties?.attribution?.url,
                     ]),

src/Models/ThemeConfig/Conversion/AddPrefixToTagRenderingConfig.ts

@@ -7,6 +7,7 @@ import {
     QuestionableTagRenderingConfigJson,
 } from "../Json/QuestionableTagRenderingConfigJson"
 import { Utils } from "../../../Utils"
+import { ConversionContext } from "./ConversionContext"
 
 export default class AddPrefixToTagRenderingConfig extends DesugaringStep<QuestionableTagRenderingConfigJson> {
     private readonly _prefix: string
@@ -142,7 +143,8 @@ export default class AddPrefixToTagRenderingConfig extends DesugaringStep<Questi
     }
 
     public convert(
-        json: Readonly<QuestionableTagRenderingConfigJson>
+        json: Readonly<QuestionableTagRenderingConfigJson>,
+        context: ConversionContext
     ): QuestionableTagRenderingConfigJson {
         let freeform = json.freeform
         if (freeform) {

src/Models/ThemeConfig/Conversion/Conversion.ts

@@ -1,7 +1,7 @@
 import { LayerConfigJson } from "../Json/LayerConfigJson"
-import { Utils } from "../../../Utils"
 import { QuestionableTagRenderingConfigJson } from "../Json/QuestionableTagRenderingConfigJson"
 import { ConversionContext } from "./ConversionContext"
+import { Lists } from "../../../Utils/Lists"
 
 export interface DesugaringContext {
     tagRenderings: Map<string, QuestionableTagRenderingConfigJson>
@@ -219,7 +219,7 @@ export class Concat<X, T> extends Conversion<X[], T[]> {
             return <undefined | null>values
         }
         const vals: T[][] = new Each(this._step).convert(values, context.inOperation("concat"))
-        return [].concat(...vals)
+        return vals.flatMap(l => l)
     }
 }
 
@@ -264,7 +264,6 @@ export class Cached<TIn, TOut> extends Conversion<TIn, TOut> {
 }
 
 export class Fuse<T> extends DesugaringStep<T> {
-    protected debug = false
     private readonly steps: DesugaringStep<T>[]
 
     constructor(doc: string, ...steps: DesugaringStep<T>[]) {
@@ -274,18 +273,12 @@ export class Fuse<T> extends DesugaringStep<T> {
                 "This fused pipeline of the following steps: " +
                 steps.map((s) => s.name).join(", ")
         )
-        this.steps = Utils.NoNull(steps)
+        this.steps = Lists.noNull(steps)
     }
 
-    public enableDebugging(): Fuse<T> {
-        this.debug = true
-        return this
-    }
 
     convert(json: T, context: ConversionContext): T {
-        const timings = []
         for (let i = 0; i < this.steps.length; i++) {
-            const start = new Date()
             const step = this.steps[i]
             try {
                 const r = step.convert(json, context.inOperation(step.name))
@@ -297,14 +290,6 @@ export class Fuse<T> extends DesugaringStep<T> {
                 console.error("Step " + step.name + " failed due to ", e, e.stack)
                 throw e
             }
-            if (this.debug) {
-                const stop = new Date()
-                const timeNeededMs = stop.getTime() - start.getTime()
-                timings.push(timeNeededMs)
-            }
-        }
-        if (this.debug) {
-            console.log("Time needed,", timings.join(", "))
         }
         return json
     }

src/Models/ThemeConfig/Conversion/DetectMappingsWithImages.ts

@@ -1,9 +1,9 @@
 import { DesugaringStep } from "./Conversion"
 import { TagRenderingConfigJson } from "../Json/TagRenderingConfigJson"
 import { ConversionContext } from "./ConversionContext"
-import { Utils } from "../../../Utils"
 import Translations from "../../../UI/i18n/Translations"
 import { DoesImageExist } from "./Validation"
+import { Lists } from "../../../Utils/Lists"
 
 export class DetectMappingsWithImages extends DesugaringStep<TagRenderingConfigJson> {
     private readonly _doesImageExist: DoesImageExist
@@ -45,7 +45,7 @@ export class DetectMappingsWithImages extends DesugaringStep<TagRenderingConfigJ
         for (let i = 0; i < json.mappings.length; i++) {
             const mapping = json.mappings[i]
             const ignore = mapping["#"]?.indexOf(ignoreToken) >= 0
-            const images = Utils.Dedup(Translations.T(mapping.then)?.ExtractImages() ?? [])
+            const images = Lists.dedup(Translations.T(mapping.then)?.ExtractImages() ?? [])
             const ctx = context.enters("mappings", i)
             if (images.length > 0) {
                 if (!ignore) {

src/Models/ThemeConfig/Conversion/ExpandFilter.ts

@@ -14,6 +14,7 @@ import Translations from "../../../UI/i18n/Translations"
 import { FlatTag, OptimizedTag, TagsFilterClosed } from "../../../Logic/Tags/TagTypes"
 import { TagsFilter } from "../../../Logic/Tags/TagsFilter"
 import { Translation } from "../../../UI/i18n/Translation"
+import { Lists } from "../../../Utils/Lists"
 
 export class PruneFilters extends DesugaringStep<LayerConfigJson> {
     constructor() {
@@ -107,9 +108,7 @@ export class PruneFilters extends DesugaringStep<LayerConfigJson> {
         const sourceTags = TagUtils.Tag(json.source["osmTags"])
         return {
             ...json,
-            filter: Utils.NoNull(
-                json.filter?.map((obj) => this.prune(sourceTags, <FilterConfigJson>obj, context))
-            ),
+            filter: Lists.noNull(json.filter?.map((obj) => this.prune(sourceTags, <FilterConfigJson>obj, context))),
         }
     }
 }

src/Models/ThemeConfig/Conversion/ExpandTagRendering.ts

@@ -8,6 +8,7 @@ import { Utils } from "../../../Utils"
 import { AddContextToTranslations } from "./AddContextToTranslations"
 import AddPrefixToTagRenderingConfig from "./AddPrefixToTagRenderingConfig"
 import { Translatable } from "../Json/Translatable"
+import { Lists } from "../../../Utils/Lists"
 
 export class ExpandTagRendering extends Conversion<
     | string
@@ -41,8 +42,7 @@ export class ExpandTagRendering extends Conversion<
     ) {
         super(
             "ExpandTagRendering",
-            "Converts a tagRenderingSpec into the full tagRendering, e.g. by substituting the tagRendering by the shared-question and reusing the builtins",
-            []
+            "Converts a tagRenderingSpec into the full tagRendering, e.g. by substituting the tagRendering by the shared-question and reusing the builtins"
         )
         this._state = state
         this._self = self
@@ -387,7 +387,7 @@ export class ExpandTagRendering extends Conversion<
                         if (layer === undefined) {
                             const candidates = Utils.sortedByLevenshteinDistance(
                                 layerName,
-                                Utils.NoNull(Array.from(state.sharedLayers.keys()))
+                                Lists.noNull(Array.from(state.sharedLayers.keys()))
                             )
                             if (candidates.length === 0) {
                                 ctx.err(
@@ -413,7 +413,7 @@ export class ExpandTagRendering extends Conversion<
                             // We are dealing with a looping import, no error is necessary
                             continue
                         }
-                        candidates = Utils.NoNull(layer.tagRenderings.map((tr) => tr["id"])).map(
+                        candidates = Lists.noNull(layer.tagRenderings.map((tr) => tr["id"])).map(
                             (id) => layerName + "." + id
                         )
                     }

src/Models/ThemeConfig/Conversion/FixImages.ts

@@ -7,6 +7,7 @@ import Translations from "../../../UI/i18n/Translations"
 
 import { parse as parse_html } from "node-html-parser"
 import { ConversionContext } from "./ConversionContext"
+import { Lists } from "../../../Utils/Lists"
 
 export class ExtractImages extends Conversion<
     ThemeConfigJson,
@@ -243,16 +244,12 @@ export class ExtractImages extends Conversion<
             }
 
             // Split "circle:white;./assets/layers/.../something.svg" into ["circle", "./assets/layers/.../something.svg"]
-            const allPaths = Utils.NoNull(
-                Utils.NoEmpty(
-                    foundImage.path?.split(";")?.map((part) => {
-                        if (part.startsWith("http")) {
-                            return part
-                        }
-                        return part.split(":")[0]
-                    })
-                )
-            )
+            const allPaths = Lists.noNull(Lists.noEmpty(foundImage.path?.split(";")?.map((part) => {
+                if (part.startsWith("http")) {
+                    return part
+                }
+                return part.split(":")[0]
+            })))
             for (const path of allPaths) {
                 cleanedImages.push({
                     path,

src/Models/ThemeConfig/Conversion/LegacyJsonConvert.ts

@@ -1,10 +1,10 @@
 import { ThemeConfigJson } from "../Json/ThemeConfigJson"
-import { Utils } from "../../../Utils"
 import LineRenderingConfigJson from "../Json/LineRenderingConfigJson"
 import { LayerConfigJson } from "../Json/LayerConfigJson"
 import { DesugaringStep, Each, Fuse, On } from "./Conversion"
 import PointRenderingConfigJson from "../Json/PointRenderingConfigJson"
 import { ConversionContext } from "./ConversionContext"
+import { Lists } from "../../../Utils/Lists"
 
 export class UpdateLegacyLayer extends DesugaringStep<
     LayerConfigJson | string | { builtin; override }
@@ -190,7 +190,7 @@ export class UpdateLegacyLayer extends DesugaringStep<
                     ) {
                         iconConfig = iconConfig.render
                     }
-                    const icon = Utils.NoEmpty(iconConfig.split(";"))
+                    const icon = Lists.noEmpty(iconConfig.split(";"))
                     pr.marker = icon.map((i) => {
                         if (i.startsWith("http")) {
                             return { icon: i }
@@ -281,7 +281,7 @@ class UpdateLegacyTheme extends DesugaringStep<ThemeConfigJson> {
             }
         }
 
-        oldThemeConfig.layers = Utils.NoNull(oldThemeConfig.layers)
+        oldThemeConfig.layers = Lists.noNull(oldThemeConfig.layers)
         delete oldThemeConfig["language"]
         delete oldThemeConfig["version"]
         delete oldThemeConfig["clustering"]

src/Models/ThemeConfig/Conversion/PrepareLayer.ts

@@ -1,18 +1,6 @@
-import {
-    Concat,
-    DesugaringContext,
-    DesugaringStep,
-    Each,
-    FirstOf,
-    Fuse,
-    On,
-    SetDefault,
-} from "./Conversion"
+import { Concat, DesugaringContext, DesugaringStep, Each, FirstOf, Fuse, On, SetDefault } from "./Conversion"
 import { LayerConfigJson } from "../Json/LayerConfigJson"
-import {
-    MinimalTagRenderingConfigJson,
-    TagRenderingConfigJson,
-} from "../Json/TagRenderingConfigJson"
+import { MinimalTagRenderingConfigJson, TagRenderingConfigJson } from "../Json/TagRenderingConfigJson"
 import { Utils } from "../../../Utils"
 import RewritableConfigJson from "../Json/RewritableConfigJson"
 import SpecialVisualizations from "../../../UI/SpecialVisualizations"
@@ -33,6 +21,7 @@ import { TagUtils } from "../../../Logic/Tags/TagUtils"
 import { ExpandFilter, PruneFilters } from "./ExpandFilter"
 import { ExpandTagRendering } from "./ExpandTagRendering"
 import layerconfig from "../../../assets/schemas/layerconfigmeta.json"
+import { Lists } from "../../../Utils/Lists"
 
 class AddFiltersFromTagRenderings extends DesugaringStep<LayerConfigJson> {
     constructor() {
@@ -360,7 +349,7 @@ export class AddEditingElements extends DesugaringStep<LayerConfigJson> {
         const addByDefault = this.builtinQuestions.filter((tr) => tr.labels?.indexOf(key) >= 0)
         const ids = new Set(addByDefault.map((tr) => tr.id))
         const idsInOrder = this._desugaring.tagRenderingOrder?.filter((id) => ids.has(id)) ?? []
-        return Utils.NoNull(idsInOrder.map((id) => this._desugaring.tagRenderings.get(id)))
+        return Lists.noNull(idsInOrder.map((id) => this._desugaring.tagRenderings.get(id)))
     }
 
     convert(json: LayerConfigJson, _: ConversionContext): LayerConfigJson {
@@ -771,11 +760,11 @@ class ExpandIconBadges extends DesugaringStep<PointRenderingConfigJson> {
                     const condition = tr.condition
                     for (const trElement of tr.mappings) {
                         const showIf = TagUtils.optimzeJson({
-                            and: Utils.NoNull([
-                                condition,
-                                {
-                                    or: Utils.NoNull([trElement.alsoShowIf, trElement.if]),
-                                },
+                            and: Lists.noNull([
+                              condition,
+                              {
+                                or: Lists.noNull([trElement.alsoShowIf, trElement.if]),
+                              },
                             ]),
                         })
                         if (showIf === true) {
@@ -984,14 +973,12 @@ export class AutoTitleIcon extends DesugaringStep<LayerConfigJson> {
 
         const allAutoIndex = json.titleIcons.indexOf(<any>"auto:*")
         if (allAutoIndex >= 0) {
-            const generated = Utils.NoNull(
-                json.tagRenderings.map((tr) => {
-                    if (typeof tr === "string") {
-                        return undefined
-                    }
-                    return this.createTitleIconsBasedOn(<any>tr)
-                })
-            )
+            const generated = Lists.noNull(json.tagRenderings.map((tr) => {
+              if (typeof tr === "string") {
+                return undefined
+              }
+              return this.createTitleIconsBasedOn(<any>tr)
+            }))
             json.titleIcons.splice(allAutoIndex, 1, ...generated)
             return json
         }
@@ -1113,9 +1100,7 @@ export class OrderTagRendering extends DesugaringStep<TagRenderingConfigJson | s
 }
 
 export class OrderLayer extends DesugaringStep<string | LayerConfigJson> {
-    private static readonly layerAttributesOrder: ReadonlyArray<string> = Utils.Dedup(
-        (<ConfigMeta[]>layerconfig).filter((c) => c.path.length === 1).map((c) => c.path[0])
-    )
+    private static readonly layerAttributesOrder: ReadonlyArray<string> = Lists.dedup((<ConfigMeta[]>layerconfig).filter((c) => c.path.length === 1).map((c) => c.path[0]))
 
     constructor() {
         super("OrderLayer", "Reorders a tagRendering to the default order")
@@ -1151,7 +1136,8 @@ export class PrepareLayer extends Fuse<LayerConfigJson> {
             "Fully prepares and expands a layer for the LayerConfig.",
             new DeriveSource(),
             new On("tagRenderings", new Each(new RewriteSpecial())),
-            new On("tagRenderings", new Concat(new ExpandRewrite()).andThenF(Utils.Flatten)),
+            new On("tagRenderings", new Concat(new ExpandRewrite())
+                .andThenF(Utils.Flatten)),
             new On(
                 "tagRenderings",
                 (layer) =>

src/Models/ThemeConfig/Conversion/PrepareTheme.ts

@@ -1,14 +1,4 @@
-import {
-    Concat,
-    Conversion,
-    DesugaringContext,
-    DesugaringStep,
-    Each,
-    Fuse,
-    On,
-    Pass,
-    SetDefault,
-} from "./Conversion"
+import { Concat, Conversion, DesugaringContext, DesugaringStep, Each, Fuse, On, Pass, SetDefault } from "./Conversion"
 import { ThemeConfigJson } from "../Json/ThemeConfigJson"
 import { OrderLayer, PrepareLayer, RewriteSpecial } from "./PrepareLayer"
 import { LayerConfigJson } from "../Json/LayerConfigJson"
@@ -22,6 +12,7 @@ import ValidationUtils from "./ValidationUtils"
 import { ConversionContext } from "./ConversionContext"
 import { ConfigMeta } from "../../../UI/Studio/configMeta"
 import themeconfig from "../../../assets/schemas/layoutconfigmeta.json"
+import { Lists } from "../../../Utils/Lists"
 
 class SubstituteLayer extends Conversion<string | LayerConfigJson, LayerConfigJson[]> {
     private readonly _state: DesugaringContext
@@ -198,7 +189,7 @@ export class AddDefaultLayers extends DesugaringStep<ThemeConfigJson> {
 
     convert(json: ThemeConfigJson, context: ConversionContext): ThemeConfigJson {
         const state = this._state
-        json.layers = Utils.NoNull([...(json.layers ?? [])])
+        json.layers = Lists.noNull([...(json.layers ?? [])])
         const alreadyLoaded = new Set(json.layers.map((l) => l["id"]))
 
         for (const layerName of Constants.added_by_default) {
@@ -612,9 +603,7 @@ class PostvalidateTheme extends DesugaringStep<ThemeConfigJson> {
     }
 }
 export class OrderTheme extends Fuse<ThemeConfigJson> {
-    private static readonly themeAttributesOrder: ReadonlyArray<string> = Utils.Dedup(
-        (<ConfigMeta[]>themeconfig).filter((c) => c.path.length === 1).map((c) => c.path[0])
-    )
+    private static readonly themeAttributesOrder: ReadonlyArray<string> = Lists.dedup((<ConfigMeta[]>themeconfig).filter((c) => c.path.length === 1).map((c) => c.path[0]))
 
     constructor() {
         super("Reorders the layer to the default order",

src/Models/ThemeConfig/Conversion/PrevalidateLayer.ts

@@ -10,6 +10,7 @@ import { And } from "../../../Logic/Tags/And"
 import { DoesImageExist, ValidateFilter, ValidatePointRendering } from "./Validation"
 import { ValidateTagRenderings } from "./ValidateTagRenderings"
 import { TagsFilterClosed } from "../../../Logic/Tags/TagTypes"
+import { Lists } from "../../../Utils/Lists"
 
 export class PrevalidateLayer extends DesugaringStep<LayerConfigJson> {
     private readonly _isBuiltin: boolean
@@ -207,10 +208,8 @@ export class PrevalidateLayer extends DesugaringStep<LayerConfigJson> {
         }
         {
             // duplicate ids in tagrenderings check
-            const duplicates = Utils.NoNull(
-                Utils.Duplicates(Utils.NoNull((json.tagRenderings ?? []).map((tr) => tr["id"])))
-            )
-            if (duplicates.length > 0) {
+            const duplicates = Lists.noNull(Utils.Duplicates(json.tagRenderings?.map((tr) => tr?.["id"])))
+            if (duplicates?.length > 0) {
                 // It is tempting to add an index to this warning; however, due to labels the indices here might be different from the index in the tagRendering list
                 context
                     .enter("tagRenderings")

src/Models/ThemeConfig/Conversion/ValidationUtils.ts

@@ -1,8 +1,8 @@
 import { TagRenderingConfigJson } from "../Json/TagRenderingConfigJson"
-import { Utils } from "../../../Utils"
 import SpecialVisualizations from "../../../UI/SpecialVisualizations"
 import { RenderingSpecification, SpecialVisualization } from "../../../UI/SpecialVisualization"
 import { QuestionableTagRenderingConfigJson } from "../Json/QuestionableTagRenderingConfigJson"
+import { Lists } from "../../../Utils/Lists"
 
 export default class ValidationUtils {
     public static getAllSpecialVisualisations(
@@ -51,9 +51,9 @@ export default class ValidationUtils {
                 JSON.stringify(renderingConfig.mappings)
             )
         }
-        const translations: any[] = Utils.NoNull([
-            renderingConfig.render,
-            ...(renderingConfig.mappings ?? []).map((m) => m.then),
+        const translations: any[] = Lists.noNull([
+          renderingConfig.render,
+          ...(renderingConfig.mappings ?? []).map((m) => m.then),
         ])
         const all: RenderingSpecification[] = []
         for (let translation of translations) {

src/Models/ThemeConfig/FilterConfig.ts

@@ -10,6 +10,7 @@ import { Utils } from "../../Utils"
 import { RegexTag } from "../../Logic/Tags/RegexTag"
 import MarkdownUtils from "../../Utils/MarkdownUtils"
 import Validators, { ValidatorType } from "../../UI/InputElement/Validators"
+import { Lists } from "../../Utils/Lists"
 
 export type FilterConfigOption = {
     question: Translation
@@ -225,17 +226,17 @@ export default class FilterConfig {
     public GenerateDocs(): string {
         const hasField = this.options.some((opt) => opt.fields?.length > 0)
         return MarkdownUtils.table(
-            Utils.NoNull(["id", "question", "osmTags", hasField ? "fields" : undefined]),
+            Lists.noNull(["id", "question", "osmTags", hasField ? "fields" : undefined]),
             this.options.map((opt, i) => {
                 const isDefault = this.options.length > 1 && (this.defaultSelection ?? 0) == i
                 return <string[]>(
-                    Utils.NoNull([
-                        this.id + "." + i,
-                        isDefault ? `*${opt.question.txt}* (default)` : opt.question,
-                        opt.osmTags?.asHumanString() ?? "",
-                        opt.fields?.length > 0
-                            ? opt.fields.map((f) => f.name + " (" + f.type + ")").join(" ")
-                            : undefined,
+                    Lists.noNull([
+                      this.id + "." + i,
+                      isDefault ? `*${opt.question.txt}* (default)` : opt.question,
+                      opt.osmTags?.asHumanString() ?? "",
+                      opt.fields?.length > 0
+                        ? opt.fields.map((f) => f.name + " (" + f.type + ")").join(" ")
+                        : undefined,
                     ])
                 )
             })

src/Models/ThemeConfig/LayerConfig.ts

@@ -23,6 +23,7 @@ import MarkdownUtils from "../../Utils/MarkdownUtils"
 import { And } from "../../Logic/Tags/And"
 import OsmWiki from "../../Logic/Osm/OsmWiki"
 import { UnitUtils } from "../UnitUtils"
+import { Lists } from "../../Utils/Lists"
 
 export default class LayerConfig extends WithContextLoader {
     public static readonly syncSelectionAllowed = ["no", "local", "theme-only", "global"] as const
@@ -226,7 +227,7 @@ export default class LayerConfig extends WithContextLoader {
         }
 
         if (json.lineRendering) {
-            this.lineRendering = Utils.NoNull(json.lineRendering).map(
+            this.lineRendering = Lists.noNull(json.lineRendering).map(
                 (r, i) => new LineRenderingConfig(r, `${context}[${i}]`)
             )
         } else {
@@ -234,7 +235,7 @@ export default class LayerConfig extends WithContextLoader {
         }
 
         if (json.pointRendering) {
-            this.mapRendering = Utils.NoNull(json.pointRendering).map(
+            this.mapRendering = Lists.noNull(json.pointRendering).map(
                 (r, i) => new PointRenderingConfig(r, `${context}[${i}](${this.id})`)
             )
         } else {
@@ -283,7 +284,7 @@ export default class LayerConfig extends WithContextLoader {
         }
 
         const missingIds =
-            Utils.NoNull(json.tagRenderings)?.filter(
+            Lists.noNull(json.tagRenderings)?.filter(
                 (tr) =>
                     typeof tr !== "string" &&
                     tr["builtin"] === undefined &&
@@ -298,7 +299,7 @@ export default class LayerConfig extends WithContextLoader {
             throw msg
         }
 
-        this.tagRenderings = (Utils.NoNull(json.tagRenderings) ?? []).map(
+        this.tagRenderings = (Lists.noNull(json.tagRenderings) ?? []).map(
             (tr, i) =>
                 new TagRenderingConfig(
                     <QuestionableTagRenderingConfigJson>tr,
@@ -431,7 +432,7 @@ export default class LayerConfig extends WithContextLoader {
 
                     return [
                         `[${tr.id}](#${tr.id}) ${origDef}`,
-                        Utils.NoNull([q, r, options]).join("<br/>"),
+                        Lists.noNull([q, r, options]).join("<br/>"),
                         tr.labels.join(", "),
                         key,
                     ]
@@ -560,7 +561,7 @@ export default class LayerConfig extends WithContextLoader {
             ]
         }
 
-        for (const revDep of Utils.Dedup(layerIsNeededBy?.get(this.id) ?? [])) {
+        for (const revDep of Lists.dedup(layerIsNeededBy?.get(this.id) ?? [])) {
             extraProps.push(
                 ["This layer is needed as dependency for layer", `[${revDep}](#${revDep})`].join(
                     " "
@@ -568,32 +569,30 @@ export default class LayerConfig extends WithContextLoader {
             )
         }
 
-        const tableRows: string[][] = Utils.NoNull(
-            this.tagRenderings
-                .map((tr) => tr.FreeformValues())
-                .filter((values) => values !== undefined)
-                .filter((values) => values.key !== "id")
-                .map((values) => {
-                    const embedded: string[] = values.values?.map((v) =>
-                        OsmWiki.constructLinkMd(values.key, v)
-                    ) ?? ["_no preset options defined, or no values in them_"]
-                    const statistics = `https://taghistory.raifer.tech/?#***/${encodeURIComponent(
-                        values.key
-                    )}/`
-                    const tagInfo = `https://taginfo.openstreetmap.org/keys/${values.key}#values`
-                    return [
-                        [
-                            `<a target="_blank" href='${tagInfo}'><img src='https://mapcomplete.org/assets/svg/search.svg' height='18px'></a>`,
-                            `<a target="_blank" href='${statistics}'><img src='https://mapcomplete.org/assets/svg/statistics.svg' height='18px'></a>`,
-                            OsmWiki.constructLinkMd(values.key),
-                        ].join(" "),
-                        values.type === undefined
-                            ? "Multiple choice"
-                            : `[${values.type}](../SpecialInputElements.md#${values.type})`,
-                        embedded.join(" "),
-                    ]
-                })
-        )
+        const tableRows: string[][] = Lists.noNull(this.tagRenderings
+          .map((tr) => tr.FreeformValues())
+          .filter((values) => values !== undefined)
+          .filter((values) => values.key !== "id")
+          .map((values) => {
+            const embedded: string[] = values.values?.map((v) =>
+              OsmWiki.constructLinkMd(values.key, v)
+            ) ?? ["_no preset options defined, or no values in them_"]
+            const statistics = `https://taghistory.raifer.tech/?#***/${encodeURIComponent(
+              values.key
+            )}/`
+            const tagInfo = `https://taginfo.openstreetmap.org/keys/${values.key}#values`
+            return [
+              [
+                `<a target="_blank" href='${tagInfo}'><img src='https://mapcomplete.org/assets/svg/search.svg' height='18px'></a>`,
+                `<a target="_blank" href='${statistics}'><img src='https://mapcomplete.org/assets/svg/statistics.svg' height='18px'></a>`,
+                OsmWiki.constructLinkMd(values.key),
+              ].join(" "),
+              values.type === undefined
+                ? "Multiple choice"
+                : `[${values.type}](../SpecialInputElements.md#${values.type})`,
+              embedded.join(" "),
+            ]
+          }))
 
         let quickOverview: string[] = []
         if (tableRows.length > 0) {
@@ -693,7 +692,7 @@ export default class LayerConfig extends WithContextLoader {
     }
 
     AllTagRenderings(): TagRenderingConfig[] {
-        return Utils.NoNull([...this.tagRenderings, ...this.titleIcons, this.title])
+        return Lists.noNull([...this.tagRenderings, ...this.titleIcons, this.title])
     }
 
     public isLeftRightSensitive(): boolean {

src/Models/ThemeConfig/TagRenderingConfig.ts

@@ -5,10 +5,7 @@ import { TagUtils } from "../../Logic/Tags/TagUtils"
 import { And } from "../../Logic/Tags/And"
 import { Utils } from "../../Utils"
 import { Tag } from "../../Logic/Tags/Tag"
-import {
-    MappingConfigJson,
-    QuestionableTagRenderingConfigJson,
-} from "./Json/QuestionableTagRenderingConfigJson"
+import { MappingConfigJson, QuestionableTagRenderingConfigJson } from "./Json/QuestionableTagRenderingConfigJson"
 import Validators, { ValidatorType } from "../../UI/InputElement/Validators"
 import { TagRenderingConfigJson } from "./Json/TagRenderingConfigJson"
 import { RegexTag } from "../../Logic/Tags/RegexTag"
@@ -21,6 +18,7 @@ import { UploadableTag } from "../../Logic/Tags/TagTypes"
 import LayerConfig from "./LayerConfig"
 import ComparingTag from "../../Logic/Tags/ComparingTag"
 import { Unit } from "../Unit"
+import { Lists } from "../../Utils/Lists"
 
 export interface Mapping {
     readonly if: UploadableTag
@@ -317,7 +315,7 @@ export default class TagRenderingConfig {
                 }
                 keys.push(...mapping.if.usedKeys())
             }
-            keys = Utils.Dedup(keys)
+            keys = Lists.dedup(keys)
             for (let i = 0; i < this.mappings.length; i++) {
                 const mapping = this.mappings[i]
                 if (mapping.hideInAnswer) {
@@ -352,7 +350,7 @@ export default class TagRenderingConfig {
                 }
                 allKeys = allKeys.concat(mapping.if.usedKeys())
             }
-            allKeys = Utils.Dedup(allKeys)
+            allKeys = Lists.dedup(allKeys)
             if (allKeys.length > 1 && !allHaveIfNot) {
                 throw `${context}: A multi-answer is defined, which generates values over multiple keys. Please define ifnot-tags too on every mapping`
             }
@@ -541,20 +539,18 @@ export default class TagRenderingConfig {
             if?: TagsFilter
             then: TypedTranslation<Record<string, string>>
             img?: string
-        }[] = Utils.NoNull(
-            (this.mappings ?? [])?.filter((mapping) => {
-                if (mapping.if === undefined) {
-                    return true
-                }
-                if (TagUtils.MatchesMultiAnswer(mapping.if, tags)) {
-                    return true
-                }
-                if (mapping.alsoShowIf?.matchesProperties(tags)) {
-                    return true
-                }
-                return false
-            })
-        )
+        }[] = Lists.noNull((this.mappings ?? [])?.filter((mapping) => {
+          if (mapping.if === undefined) {
+            return true
+          }
+          if (TagUtils.MatchesMultiAnswer(mapping.if, tags)) {
+            return true
+          }
+          if (mapping.alsoShowIf?.matchesProperties(tags)) {
+            return true
+          }
+          return false
+        }))
 
         if (freeformKeyDefined && tags[this.freeform.key] !== undefined) {
             const usedFreeformValues = new Set<string>(
@@ -659,9 +655,7 @@ export default class TagRenderingConfig {
             const key = this.freeform?.key
             const answerMappings = this.mappings?.filter((m) => m.hideInAnswer !== true)
             if (key === undefined) {
-                const values: { k: string; v: string }[][] = Utils.NoNull(
-                    answerMappings?.map((m) => m.if.asChange({})) ?? []
-                )
+                const values: { k: string; v: string }[][] = Lists.noNull(answerMappings?.map((m) => m.if.asChange({})) ?? [])
                 if (values.length === 0) {
                     return
                 }
@@ -677,17 +671,13 @@ export default class TagRenderingConfig {
                 }
                 return {
                     key: commonKey,
-                    values: Utils.NoNull(
-                        values.map((arr) => arr.filter((item) => item.k === commonKey)[0]?.v)
-                    ),
+                    values: Lists.noNull(values.map((arr) => arr.filter((item) => item.k === commonKey)[0]?.v)),
                 }
             }
 
-            let values = Utils.NoNull(
-                answerMappings?.map(
-                    (m) => m.if.asChange({}).filter((item) => item.k === key)[0]?.v
-                ) ?? []
-            )
+            let values = Lists.noNull(answerMappings?.map(
+              (m) => m.if.asChange({}).filter((item) => item.k === key)[0]?.v
+            ) ?? [])
             if (values.length === undefined) {
                 values = undefined
             }
@@ -1027,18 +1017,18 @@ export default class TagRenderingConfig {
             ].join(" ")
         }
 
-        return Utils.NoNull([
-            "### " + this.id,
-            this.description,
-            this.question !== undefined
-                ? "The question is `" + this.question.txt + "`"
-                : "_This tagrendering has no question and is thus read-only_",
-            freeform,
-            mappings,
-            condition,
-            labels,
-            "",
-            reuse,
+        return Lists.noNull([
+          "### " + this.id,
+          this.description,
+          this.question !== undefined
+            ? "The question is `" + this.question.txt + "`"
+            : "_This tagrendering has no question and is thus read-only_",
+          freeform,
+          mappings,
+          condition,
+          labels,
+          "",
+          reuse,
         ]).join("\n")
     }
 
@@ -1061,7 +1051,7 @@ export default class TagRenderingConfig {
             tags.push(m.ifnot)
         }
 
-        return Utils.NoNull(tags)
+        return Lists.noNull(tags)
     }
 
     /**

src/Models/ThemeConfig/ThemeConfig.ts

@@ -13,6 +13,7 @@ import { TagsFilter } from "../../Logic/Tags/TagsFilter"
 import TagRenderingConfig from "./TagRenderingConfig"
 import { TagUtils } from "../../Logic/Tags/TagUtils"
 import { TagRenderingConfigJson } from "./Json/TagRenderingConfigJson"
+import { Lists } from "../../Utils/Lists"
 
 /**
  * Minimal information about a theme
@@ -381,7 +382,7 @@ export default class ThemeConfig implements ThemeInformation {
         const usedImages = jsonNoFavourites._usedImages
         usedImages.sort()
 
-        this.usedImages = Utils.Dedup(usedImages)
+        this.usedImages = Lists.dedup(usedImages)
         return this.usedImages
     }
 }

src/UI/AllThemesGui.svelte

@@ -13,7 +13,6 @@
   import ThemesList from "./BigComponents/ThemesList.svelte"
   import { MinimalThemeInformation } from "../Models/ThemeConfig/ThemeConfig"
   import LoginButton from "./Base/LoginButton.svelte"
-  import { Utils } from "../Utils"
   import Searchbar from "./Base/Searchbar.svelte"
   import ThemeSearch, { ThemeSearchIndex } from "../Logic/Search/ThemeSearch"
   import SearchUtils from "../Logic/Search/SearchUtils"
@@ -26,6 +25,7 @@
   import AccordionSingle from "./Flowbite/AccordionSingle.svelte"
   import MenuDrawerIndex from "./BigComponents/MenuDrawerIndex.svelte"
   import InsetSpacer from "./Base/InsetSpacer.svelte"
+  import { Lists } from "../Utils/Lists"
 
   AndroidPolyfill.init().then(() => console.log("Android polyfill setup completed"))
   const featureSwitches = new OsmConnectionFeatureSwitches()
@@ -80,7 +80,7 @@
 
   const customThemes: Store<MinimalThemeInformation[]> = Stores.listStabilized<string>(
     state.installedUserThemes.stabilized(1000)
-  ).mapD((stableIds) => Utils.NoNullInplace(stableIds.map((id) => state.getUnofficialTheme(id))))
+  ).mapD((stableIds) => Lists.noNullInplace(stableIds.map((id) => state.getUnofficialTheme(id))))
 
   function filtered(themes: Store<MinimalThemeInformation[]>): Store<MinimalThemeInformation[]> {
     const searchIndex = Locale.language.map(

src/UI/Base/ChartJsUtils.ts

@@ -3,8 +3,7 @@ import TagRenderingConfig from "../../Models/ThemeConfig/TagRenderingConfig"
 import { TagUtils } from "../../Logic/Tags/TagUtils"
 import { OsmFeature } from "../../Models/OsmFeature"
 import { Utils } from "../../Utils"
-import { labels } from "wikibase-sdk/dist/src/helpers/simplify"
-import { isInteger } from "tailwind-merge/dist/lib/validators"
+import { Lists } from "../../Utils/Lists"
 
 class ChartJsColours {
     public static readonly unknownColor = "rgba(128, 128, 128, 0.2)"
@@ -243,7 +242,7 @@ export class ChartJsUtils {
             if (options?.period === "month") {
                 trimmedDays = trimmedDays.map((d) => d.substring(0, 7))
             }
-            trimmedDays = Utils.Dedup(trimmedDays)
+            trimmedDays = Lists.dedup(trimmedDays)
 
             for (let i = 0; i < labels.length; i++) {
                 const label = labels[i]

src/UI/Base/Combine.ts

@@ -10,7 +10,7 @@ export default class Combine extends BaseUIElement {
 
     constructor(uiElements: (string | BaseUIElement)[]) {
         super()
-        this.uiElements = Utils.NoNull(uiElements).map((el) => {
+        this.uiElements = Utils.noNull(uiElements).map((el) => {
             if (typeof el === "string") {
                 return new FixedUiElement(el)
             }

src/UI/Base/Hotkeys.ts

@@ -4,6 +4,7 @@ import { Translation } from "../i18n/Translation"
 import Translations from "../i18n/Translations"
 import MarkdownUtils from "../../Utils/MarkdownUtils"
 import Locale from "../i18n/Locale"
+import { Lists } from "../../Utils/Lists"
 
 export default class Hotkeys {
     public static readonly _docs: UIEventSource<
@@ -130,7 +131,7 @@ export default class Hotkeys {
                 ]
             })
             .sort()
-        byKey = Utils.NoNull(byKey)
+        byKey = Lists.noNull(byKey)
         for (let i = byKey.length - 1; i > 0; i--) {
             if (byKey[i - 1][0] === byKey[i][0]) {
                 byKey.splice(i, 1)

src/UI/Base/TableOfContents.ts

@@ -64,7 +64,7 @@ export default class TableOfContents {
             }
         }
 
-        const heading = Utils.Times(() => "#", firstTitle.depth)
+        const heading = Utils.times(() => "#", firstTitle.depth)
         toc = heading + " Table of contents\n\n" + toc
 
         const firstTitleIndex = md.indexOf(firstTitle.title)

src/UI/BigComponents/CopyrightSingleIcon.svelte

@@ -2,6 +2,7 @@
   import type SmallLicense from "../../Models/smallLicense"
   import { Utils } from "../../Utils"
   import { twJoin } from "tailwind-merge"
+  import { Lists } from "../../Utils/Lists"
 
   export let iconPath: string
   export let license: SmallLicense
@@ -10,7 +11,7 @@
   } catch (e) {
     console.warn(e)
   }
-  let sources = Utils.NoNull(Utils.NoEmpty(license?.sources))
+  let sources = Utils.noNull(Lists.noEmpty(license?.sources))
 
   function sourceName(lnk: string) {
     try {

src/UI/BigComponents/Histogram.svelte

@@ -3,6 +3,7 @@
   import type { ChartConfiguration } from "chart.js"
   import ChartJs from "../Base/ChartJs.svelte"
   import { ChartJsUtils } from "../Base/ChartJsUtils"
+  import { Lists } from "../../Utils/Lists"
 
   export let values: Store<string[]>
   let counts: Store<Map<string, number>> = values.map(
@@ -11,7 +12,7 @@
         return undefined
       }
 
-      values = Utils.NoNull(values)
+      values = Utils.noNull(values)
       const counts = new Map<string, number>()
       for (const value of values) {
         const c = counts.get(value) ?? 0
@@ -23,7 +24,7 @@
 
   let max: Store<number> = counts.mapD(counts => Math.max(...Array.from(counts.values())))
   let keys: Store<string> = counts.mapD(counts => {
-    const keys = Utils.Dedup(counts.keys())
+    const keys = Lists.dedup(counts.keys())
     keys.sort(/*inplace sort*/)
     return keys
   })

src/UI/BigComponents/NewPointLocationInput.svelte

@@ -13,12 +13,12 @@
   import SnappingFeatureSource from "../../Logic/FeatureSource/Sources/SnappingFeatureSource"
   import FeatureSourceMerger from "../../Logic/FeatureSource/Sources/FeatureSourceMerger"
   import LayerConfig from "../../Models/ThemeConfig/LayerConfig"
-  import { Utils } from "../../Utils"
   import Move_arrows from "../../assets/svg/Move_arrows.svelte"
   import StaticFeatureSource from "../../Logic/FeatureSource/Sources/StaticFeatureSource"
   import { Tag } from "../../Logic/Tags/Tag"
   import { TagUtils } from "../../Logic/Tags/TagUtils"
   import type { WayId } from "../../Models/OsmFeature"
+  import { Lists } from "../../Utils/Lists"
 
   /**
    * An advanced location input, which has support to:
@@ -114,7 +114,7 @@
       })
     }
     const snappedLocation = new SnappingFeatureSource(
-      new FeatureSourceMerger(...Utils.NoNull(snapSources)),
+      new FeatureSourceMerger(...(Lists.noNull(snapSources))),
       // We snap to the (constantly updating) map location
       mapProperties.location,
       {

src/UI/BigComponents/ShareScreen.svelte

@@ -10,11 +10,11 @@
   import { QueryParameters } from "../../Logic/Web/QueryParameters"
   import Tr from "../Base/Tr.svelte"
   import Translations from "../i18n/Translations"
-  import { Utils } from "../../Utils"
   import Qr from "../../Utils/Qr"
   import AccordionSingle from "../Flowbite/AccordionSingle.svelte"
   import Constants from "../../Models/Constants"
   import Copyable from "../Base/Copyable.svelte"
+  import { Lists } from "../../Utils/Lists"
 
   export let state: ThemeViewState
   const tr = Translations.t.general.sharescreen
@@ -45,7 +45,7 @@
     enableGeolocation: boolean
   ) {
     const layout = state.theme
-    let excluded = Utils.NoNull([
+    let excluded = Lists.noNull([
       showWelcomeMessage ? undefined : "fs-welcome-message",
       enableLogin ? undefined : "fs-enable-login",
       enableFilters ? undefined : "fs-filter",
@@ -79,7 +79,7 @@
       .filter((part) => !part.startsWith("layer-"))
       .concat(...layers)
       .concat(excluded.map((k) => k + "=" + false))
-    linkToShare = baseLink + Utils.Dedup(params).join("&")
+    linkToShare = baseLink + Lists.dedup(params).join("&")
 
     if (layout.definitionRaw !== undefined) {
       linkToShare += "&userlayout=" + (layout.definedAtUrl ?? layout.id)

src/UI/BigComponents/ThemesList.svelte

@@ -23,7 +23,7 @@
       ? "flex flex-wrap items-center justify-center gap-x-2"
       : "theme-list my-2 gap-4 md:grid md:grid-flow-row md:grid-cols-2 lg:grid-cols-3"}
   >
-    {#each Utils.DedupOnId(Utils.NoNull(themes)) as theme (theme.id)}
+    {#each Utils.DedupOnId(Utils.noNull(themes)) as theme (theme.id)}
       <ThemeButton {theme} {state} iconOnly={onlyIcons}>
         {#if $search && hasSelection && themes?.[0] === theme}
           <span class="thanks hidden-on-mobile" aria-hidden="true">

src/UI/History/AggregateView.svelte

@@ -46,7 +46,7 @@
     }
     return trs.find((tr) =>
       tr.mappings.some((mapping) => {
-        const ifTags = Or.construct(Utils.NoNull([mapping.if, mapping.alsoShowIf]))
+        const ifTags = Or.construct(Lists.noNull([mapping.if, mapping.alsoShowIf]))
         const keys = ifTags.usedKeys()
         return keys.some((k) => k == key)
       })

src/UI/InputElement/Helpers/CollectionTimes/CollectionTimes.svelte

@@ -3,12 +3,12 @@
  */
 import { Stores, UIEventSource } from "../../../../Logic/UIEventSource"
 import SingleCollectionTime from "./SingleCollectionTime.svelte"
-import { Utils } from "../../../../Utils"
 import { TrashIcon } from "@rgossiaux/svelte-heroicons/solid"
+import { Lists } from "../../../../Utils/Lists"
 
 export let value: UIEventSource<string>
 
-let initialRules: string[]  = Utils.NoEmpty(value.data?.split(";")?.map(v => v.trim()))
+let initialRules: string[]  = Lists.noEmpty(value.data?.split(";")?.map(v => v.trim()))
 let singleRules: UIEventSource<UIEventSource<string>[]> = new UIEventSource(
   initialRules?.map(v => new UIEventSource(v)) ?? []
 )
@@ -17,7 +17,7 @@ if(singleRules.data.length === 0){
 }
 singleRules.bindD(stores => Stores.concat(stores)).addCallbackAndRunD(subrules => {
   console.log("Setting subrules", subrules)
-  value.set(Utils.NoEmpty(subrules).join("; "))
+  value.set(Lists.noEmpty(subrules).join("; "))
 })
 
 function rm(rule: UIEventSource){

src/UI/InputElement/Helpers/CollectionTimes/SingleCollectionTime.svelte

@@ -1,6 +1,5 @@
 <script lang="ts">
 
-  import PlusCircle from "@rgossiaux/svelte-heroicons/solid/PlusCircle"
   import TimeInput from "../TimeInput.svelte"
   import { TrashIcon } from "@rgossiaux/svelte-heroicons/solid"
   import Checkbox from "../../../Base/Checkbox.svelte"
@@ -8,7 +7,8 @@
   import { Stores, UIEventSource } from "../../../../Logic/UIEventSource"
   import Translations from "../../../i18n/Translations"
   import { OH } from "../../../OpeningHours/OpeningHours"
-  import { Utils } from "../../../../Utils"
+  import { Lists } from "../../../../Utils/Lists"
+  import { Translation } from "../../../i18n/Translation"
 
   export let value: UIEventSource<string>
 
@@ -18,7 +18,7 @@
    */
   let weekdays: Translation[] = [wt.monday, wt.tuesday, wt.wednesday, wt.thursday, wt.friday, wt.saturday, wt.sunday, Translations.t.general.opening_hours.ph]
 
-  let initialTimes= Utils.NoEmpty(value.data?.split(" ")?.[1]?.split(",")?.map(s => s.trim())??[])
+  let initialTimes= Lists.noEmpty(value.data?.split(" ")?.[1]?.split(",")?.map(s => s.trim()) ?? [])
   let values = new UIEventSource(initialTimes.map(t => new UIEventSource(t)))
   if(values.data.length === 0){
     values.data.push(new UIEventSource(""))
@@ -29,7 +29,7 @@
   let daysOfTheWeek = [...OH.days, "PH"]
   let selectedDays = daysOfTheWeek.map(() => new UIEventSource(false))
 
-  let initialDays = Utils.NoEmpty(value.data?.split(" ")?.[0]?.split(",") ?? [])
+  let initialDays = Lists.noEmpty(value.data?.split(" ")?.[0]?.split(",") ?? [])
   for (const initialDay of initialDays) {
     if (initialDay.indexOf("-") > 0) {
       let [start, end] = initialDay.split("-")
@@ -48,17 +48,17 @@
   }
 
   let selectedDaysBound = Stores.concat(selectedDays)
-    .mapD(days => Utils.NoNull(days.map((selected, i) => selected ? daysOfTheWeek[i] : undefined)))
+    .mapD(days => Lists.noNull(days.map((selected, i) => selected ? daysOfTheWeek[i] : undefined)))
   let valuesConcat: Store<string[]> = values.bindD(values => Stores.concat(values))
-    .mapD(values => Utils.NoEmpty(values))
+    .mapD(values => Lists.noEmpty(values))
   valuesConcat.mapD(times => {
     console.log(times)
-    times = Utils.NoNull(times)
+    times = Lists.noNull(times)
     if (!times || times?.length === 0) {
       return undefined
     }
     times?.sort(/*concatted, new array*/)
-    return (Utils.NoEmpty(selectedDaysBound.data).join(",") + " " + times).trim()
+    return (Lists.noEmpty(selectedDaysBound.data).join(",") + " " + times).trim()
   }, [selectedDaysBound]).addCallbackAndRunD(v => value.set(v))
 
   function selectWeekdays() {

src/UI/InputElement/Helpers/OpeningHours/OHTable.svelte

@@ -29,7 +29,7 @@
   let element: HTMLTableElement
 
   function range(n: number) {
-    return Utils.TimesT(n, (n) => n)
+    return Utils.timesT(n, (n) => n)
   }
 
   function clearSelection() {

src/UI/InputElement/Helpers/WikidataInput.svelte

@@ -13,6 +13,7 @@
   import { Utils } from "../../../Utils"
   import WikidataValidator from "../Validators/WikidataValidator"
   import Searchbar from "../../Base/Searchbar.svelte"
+  import { Lists } from "../../../Utils/Lists"
 
   const t = Translations.t.general.wikipedia
 
@@ -80,7 +81,7 @@
         seen.push(item)
       }
     }
-    return Utils.NoNull(seen).filter((i) => !knownIds.has(i.id))
+    return Lists.noNull(seen).filter((i) => !knownIds.has(i.id))
   })
 </script>
 

src/UI/InputElement/Helpers/WikidataInputHelper.svelte

@@ -12,6 +12,7 @@
   import type { Feature } from "geojson"
   import { onDestroy } from "svelte"
   import WikidataValidator from "../Validators/WikidataValidator"
+  import { Lists } from "../../../Utils/Lists"
 
   export let args: (string | number | boolean)[] = []
   export let feature: Feature
@@ -43,12 +44,8 @@
     })
   )
 
-  let instanceOf: number[] = Utils.NoNull(
-    (options?.instanceOf ?? []).map((i) => Wikidata.QIdToNumber(i))
-  )
-  let notInstanceOf: number[] = Utils.NoNull(
-    (options?.notInstanceOf ?? []).map((i) => Wikidata.QIdToNumber(i))
-  )
+  let instanceOf: number[] = Lists.noNull((options?.instanceOf ?? []).map((i) => Wikidata.QIdToNumber(i)))
+  let notInstanceOf: number[] = Lists.noNull((options?.notInstanceOf ?? []).map((i) => Wikidata.QIdToNumber(i)))
 
   let allowMultipleArg = options?.["multiple"] ?? "yes"
   let allowMultiple = allowMultipleArg === "yes" || "" + allowMultipleArg === "true"

src/UI/OpeningHours/NextChangeViz.svelte

@@ -45,7 +45,7 @@
       },
       [Stores.chronic(5 * 60 * 1000)]
     )
-    .mapD((date) => Utils.TwoDigits(date.getHours()) + ":" + Utils.TwoDigits(date.getMinutes()))
+    .mapD((date) => Utils.twoDigits(date.getHours()) + ":" + Utils.twoDigits(date.getMinutes()))
 
   let size = nextChange.map((change) =>
     change === undefined ? "absolute h-7 w-7" : "absolute h-5 w-5 top-0 left-1/4"

src/UI/OpeningHours/OpeningHours.ts

@@ -40,7 +40,7 @@ export class OH {
         if (h == 24) {
             return "00:00"
         }
-        return Utils.TwoDigits(h) + ":" + Utils.TwoDigits(m)
+        return Utils.twoDigits(h) + ":" + Utils.twoDigits(m)
     }
 
     /**

src/UI/Popup/AutoApplyButton.svelte

@@ -66,9 +66,7 @@
         const feature = state.indexedFeatures.featuresById.data.get(targetFeatureId)
         const featureTags = state.featureProperties.getStore(targetFeatureId)
         const rendering = tagRenderingConfig.GetRenderValue(featureTags.data).txt
-        const specialRenderings = Utils.NoNull(
-          SpecialVisualizations.constructSpecification(rendering)
-        ).filter((v) => typeof v !== "string" && v.func["supportsAutoAction"] === true)
+        const specialRenderings = Lists.noNull(SpecialVisualizations.constructSpecification(rendering)).filter((v) => typeof v !== "string" && v.func["supportsAutoAction"] === true)
 
         if (specialRenderings.length == 0) {
           console.warn(

src/UI/Popup/TagRendering/TagRenderingAnswer.svelte

@@ -1,6 +1,5 @@
 <script lang="ts">
   import TagRenderingConfig from "../../../Models/ThemeConfig/TagRenderingConfig"
-  import { Utils } from "../../../Utils"
   import { Translation } from "../../i18n/Translation"
   import TagRenderingMapping from "./TagRenderingMapping.svelte"
   import type { SpecialVisualizationState } from "../../SpecialVisualization"
@@ -9,6 +8,8 @@
   import LayerConfig from "../../../Models/ThemeConfig/LayerConfig"
   import { twMerge } from "tailwind-merge"
   import { onDestroy } from "svelte"
+  import { Lists } from "../../../Utils/Lists"
+
 
   export let tags: UIEventSource<Record<string, string> | undefined>
 
@@ -27,7 +28,7 @@
     throw "Config is undefined in tagRenderingAnswer"
   }
   let trs: Store<{ then: Translation; icon?: string; iconClass?: string }[]> = tags.mapD((tags) =>
-    Utils.NoNull(config?.GetRenderValues(tags)),onDestroy
+    Lists.noNull(config?.GetRenderValues(tags)),onDestroy
   )
 </script>
 

src/UI/Popup/TagRendering/TagRenderingQuestion.svelte

@@ -28,7 +28,6 @@
   import { And } from "../../../Logic/Tags/And"
   import { get } from "svelte/store"
   import Markdown from "../../Base/Markdown.svelte"
-  import { Utils } from "../../../Utils"
   import type { UploadableTag } from "../../../Logic/Tags/TagTypes"
   import { TagTypes } from "../../../Logic/Tags/TagTypes"
 
@@ -36,6 +35,7 @@
   import If from "../../Base/If.svelte"
   import DotMenu from "../../Base/DotMenu.svelte"
   import SidebarUnit from "../../Base/SidebarUnit.svelte"
+  import { Lists } from "../../../Utils/Lists"
 
   export let config: TagRenderingConfig
   export let tags: UIEventSource<Record<string, string>>
@@ -152,7 +152,7 @@
     feedback.setData(undefined)
   }
 
-  let usedKeys: string[] = Utils.Dedup(config.usedTags().flatMap((t) => t.usedKeys()))
+  let usedKeys: string[] = Lists.dedup(config.usedTags().flatMap((t) => t.usedKeys()))
 
   /**
    * The 'minimalTags' is a subset of the tags of the feature, only containing the values relevant for this object.
@@ -342,7 +342,7 @@
   let menuIsOpened = new UIEventSource(false)
 
   function disableQuestion() {
-    const newList = Utils.Dedup([config.id, ...disabledInTheme.data])
+    const newList = Lists.dedup([config.id, ...disabledInTheme.data])
     disabledInTheme.set(newList)
     menuIsOpened.set(false)
   }

src/UI/Reviews/AllReviews.svelte

@@ -27,7 +27,7 @@
       signature: string,
       madeByLoggedInUser: Store<boolean>
     })[]
-  > = reviews.reviews.map((r) => Utils.NoNull(r))
+  > = reviews.reviews.map((r) => Lists.noNull(r))
   let test = state.featureSwitches.featureSwitchIsTesting
   let debug = state.featureSwitches.featureSwitchIsDebugging
   let subject: Store<string> = reviews.subjectUri

src/UI/Search/ThemeResults.svelte

@@ -6,22 +6,19 @@
   import ThemeSearch from "../../Logic/Search/ThemeSearch"
   import SidebarUnit from "../Base/SidebarUnit.svelte"
   import ThemeResult from "./ThemeResult.svelte"
-  import type { SpecialVisualizationState } from "../SpecialVisualization"
   import DotMenu from "../Base/DotMenu.svelte"
   import { TrashIcon } from "@babeard/svelte-heroicons/mini"
   import { CogIcon } from "@rgossiaux/svelte-heroicons/solid"
   import Tr from "../Base/Tr.svelte"
-  import { MinimalThemeInformation } from "../../Models/ThemeConfig/ThemeConfig"
-  import ThemeViewState from "../../Models/ThemeViewState"
   import { WithSearchState } from "../../Models/ThemeViewState/WithSearchState"
   import { Store } from "../../Logic/UIEventSource"
-  import { Utils } from "../../Utils"
+  import { Lists } from "../../Utils/Lists"
 
   export let state: WithSearchState
   let searchTerm = state.searchState.searchTerm
   let visitedThemes =  state.userRelatedState.recentlyVisitedThemes.value
   let recentThemes: Store<string[]> = visitedThemes.map((themes) =>
-    Utils.Dedup(themes.filter((th) => th !== state.theme.id)).slice(0, 6))
+    Lists.dedup(themes.filter((th) => th !== state.theme.id)).slice(0, 6))
   let themeResults = state.searchState.themeSuggestions
 
   const t = Translations.t.general.search

src/UI/SpecialVisualisations/WebAndCommunicationSpecialVisualisations.ts

@@ -1,8 +1,4 @@
-import {
-    SpecialVisualization,
-    SpecialVisualizationState,
-    SpecialVisualizationSvelte,
-} from "../SpecialVisualization"
+import { SpecialVisualization, SpecialVisualizationState, SpecialVisualizationSvelte } from "../SpecialVisualization"
 import { ImmutableStore, Store, UIEventSource } from "../../Logic/UIEventSource"
 import BaseUIElement from "../BaseUIElement"
 import SvelteUIElement from "../Base/SvelteUIElement"
@@ -16,6 +12,7 @@ import { Translation } from "../i18n/Translation"
 import { MapillaryLinkVis } from "../Popup/MapillaryLinkVis"
 import SendEmail from "../Popup/SendEmail.svelte"
 import DynLink from "../Base/DynLink.svelte"
+import { Lists } from "../../Utils/Lists"
 
 class FediverseLinkVis extends SpecialVisualization {
     funcName = "fediverse_link"
@@ -88,9 +85,7 @@ class WikidatalabelVis extends SpecialVisualization {
         const id = tagsSource
             .map((tags) => tags[args[0]])
             .map((wikidata) => {
-                const wikidataIds = Utils.NoEmpty(
-                    wikidata?.split(";")?.map((wd) => wd.trim()) ?? []
-                )
+                const wikidataIds = Lists.noEmpty(wikidata?.split(";")?.map((wd) => wd.trim()) ?? [])
                 return wikidataIds?.[0]
             })
         const entry = id.bind((id) => Wikidata.LoadWikidataEntry(id))

src/UI/Statistics/AllStats.svelte

@@ -57,7 +57,7 @@
     .filter((tr) => tr.question !== undefined)
 
   let diffInDays = overview.mapD((overview) => {
-    const dateStrings = Utils.NoNull(overview._meta.map((cs) => cs.properties.date))
+    const dateStrings = Lists.noNull(overview._meta.map((cs) => cs.properties.date))
     const dates: number[] = dateStrings.map((d) => new Date(d).getTime())
     const mindate = Math.min(...dates)
     const maxdate = Math.max(...dates)

src/UI/Statistics/ChangesetsOverview.ts

@@ -82,7 +82,7 @@ export class ChangesetsOverview {
     public readonly _meta: (ChangeSetData & OsmFeature)[]
 
     private constructor(meta: (ChangeSetData & OsmFeature)[]) {
-        this._meta = Utils.NoNull(meta)
+        this._meta = Lists.noNull(meta)
     }
 
     public static fromDirtyData(meta: (ChangeSetData & OsmFeature)[]): ChangesetsOverview {

src/UI/Status/StatusGUI.svelte

@@ -9,7 +9,7 @@
   import Loading from "../Base/Loading.svelte"
   import Checkbox from "../Base/Checkbox.svelte"
   import PlantNet from "../../Logic/Web/PlantNet"
-
+  import { Lists } from "../../Utils/Lists"
   let services: MCService[] = []
 
   let recheckSignal: UIEventSource<any> = new UIEventSource<any>(undefined)
@@ -345,7 +345,7 @@
   let someLoading = new UIEventSource(true)
 
   function setAll() {
-    const data = Utils.NoNull(services.map((s) => s.status.data))
+    const data = Lists.noNull(services.map((s) => s.status.data))
     someLoading.setData(data.length !== services.length)
     if (data.some((d) => d === "offline")) {
       all.setData("offline")

src/UI/Studio/EditLayer.svelte

@@ -20,7 +20,7 @@
   import DeleteButton from "./DeleteButton.svelte"
   import StudioHashSetter from "./StudioHashSetter"
   import TitledPanel from "../Base/TitledPanel.svelte"
-  import Popup from "../Base/Popup.svelte"
+  import { Lists } from "../../Utils/Lists"
 
   const layerSchema: ConfigMeta[] = <any>layerSchemaRaw
 
@@ -36,7 +36,7 @@
   )
   const configuration = state.configuration
 
-  const allNames = Utils.Dedup(layerSchema.map((meta) => meta.hints.group))
+  const allNames = Lists.dedup(layerSchema.map((meta) => meta.hints.group))
 
   const perRegion: Record<string, ConfigMeta[]> = {}
   for (const region of allNames) {

src/UI/Studio/EditLayerState.ts

@@ -1,12 +1,7 @@
 import { ConfigMeta } from "./configMeta"
 import { Store, UIEventSource } from "../../Logic/UIEventSource"
 import { LayerConfigJson } from "../../Models/ThemeConfig/Json/LayerConfigJson"
-import {
-    Conversion,
-    ConversionMessage,
-    DesugaringContext,
-    Pipe,
-} from "../../Models/ThemeConfig/Conversion/Conversion"
+import { Conversion, ConversionMessage, DesugaringContext, Pipe } from "../../Models/ThemeConfig/Conversion/Conversion"
 import { PrepareLayer } from "../../Models/ThemeConfig/Conversion/PrepareLayer"
 import { PrevalidateTheme, ValidateLayer } from "../../Models/ThemeConfig/Conversion/Validation"
 import { AllSharedLayers } from "../../Customizations/AllSharedLayers"
@@ -25,6 +20,7 @@ import { LocalStorageSource } from "../../Logic/Web/LocalStorageSource"
 import { TagRenderingConfigJson } from "../../Models/ThemeConfig/Json/TagRenderingConfigJson"
 import { ValidateTheme } from "../../Models/ThemeConfig/Conversion/ValidateTheme"
 import * as questions from "../../../public/assets/generated/layers/questions.json"
+import { Lists } from "../../Utils/Lists"
 
 export interface HighlightedTagRendering {
     path: ReadonlyArray<string | number>
@@ -380,7 +376,7 @@ export default class EditLayerState extends EditJsonState<LayerConfigJson> {
             if (data[key]) {
                 // A bit of cleanup
                 const lBefore = data[key].length
-                const cleaned = Utils.NoNull(data[key])
+                const cleaned = Lists.noNull(data[key])
                 if (cleaned.length != lBefore) {
                     data[key] = cleaned
                     return true
@@ -422,7 +418,7 @@ export default class EditLayerState extends EditJsonState<LayerConfigJson> {
 
     private addMissingTagRenderingIds() {
         this.configuration.addCallbackD((config) => {
-            const trs = Utils.NoNull(config.tagRenderings ?? [])
+            const trs = Lists.noNull(config.tagRenderings ?? [])
             for (let i = 0; i < trs.length; i++) {
                 const tr = trs[i]
                 if (typeof tr === "string") {
@@ -544,7 +540,7 @@ export class EditThemeState extends EditJsonState<ThemeConfigJson> {
         const prepare = this.buildValidation(state)
         const context = ConversionContext.construct([], ["prepare"])
         if (configuration.layers) {
-            Utils.NoNullInplace(configuration.layers)
+            Lists.noNullInplace(configuration.layers)
         }
         try {
             prepare.convert(<ThemeConfigJson>configuration, context)

src/Utils.ts

@@ -1,4 +1,6 @@
 import DOMPurify from "dompurify"
+import { Lists } from "./Utils/Lists"
+import { Strings } from "./Utils/Strings"
 
 export class Utils {
     /**
@@ -109,7 +111,7 @@ In the case that MapComplete is pointed to the testing grounds, the edit will be
         return <T>parsed
     }
 
-    static EncodeXmlValue(str) {
+    static encodeXmlValue(str) {
         if (typeof str !== "string") {
             str = "" + str
         }
@@ -122,26 +124,11 @@ In the case that MapComplete is pointed to the testing grounds, the edit will be
             .replace(/'/g, "&apos;")
     }
 
-    /**
-     * Gives a clean float, or undefined if parsing fails
-     * @param str
-     */
-    static asFloat(str): number {
-        if (str) {
-            const i = parseFloat(str)
-            if (isNaN(i)) {
-                return undefined
-            }
-            return i
-        }
-        return undefined
+    public static upper(str: string) {
+        return str.substring(0, 1).toUpperCase() + str.substring(1)
     }
 
-    public static Upper(str: string) {
-        return str.substr(0, 1).toUpperCase() + str.substr(1)
-    }
-
-    public static TwoDigits(i: number) {
+    public static twoDigits(i: number) {
         if (i < 10) {
             return "0" + i
         }
@@ -151,16 +138,16 @@ In the case that MapComplete is pointed to the testing grounds, the edit will be
     /**
      * Converts a number to a number with precisely 7 decimals
      *
-     * Utils.Round7(12.123456789) // => 12.1234568
+     * Utils.round7(12.123456789) // => 12.1234568
      */
-    public static Round7(i: number): number {
+    public static round7(i: number): number {
         if (i == undefined) {
             return undefined
         }
         return Math.round(i * 10000000) / 10000000
     }
 
-    public static Times(f: (i: number) => string, count: number): string {
+    public static times(f: (i: number) => string, count: number): string {
         let res = ""
         for (let i = 0; i < count; i++) {
             res += f(i)
@@ -168,7 +155,7 @@ In the case that MapComplete is pointed to the testing grounds, the edit will be
         return res
     }
 
-    public static TimesT<T>(count: number, f: (i: number) => T): T[] {
+    public static timesT<T>(count: number, f: (i: number) => T): T[] {
         const res: T[] = []
         for (let i = 0; i < count; i++) {
             res.push(f(i))
@@ -176,16 +163,8 @@ In the case that MapComplete is pointed to the testing grounds, the edit will be
         return res
     }
 
-    /**
-     * Creates a shallow copy of the array. All elements that are not undefined/null will be in the new list
-     * @param array
-     * @constructor
-     */
-    public static NoNull<T>(array: ReadonlyArray<T> | undefined): T[] | undefined
-    public static NoNull(array: undefined): undefined
-    public static NoNull<T>(array: ReadonlyArray<T>): T[]
-    public static NoNull<T>(array: ReadonlyArray<T>): NonNullable<T>[] {
-        return <NonNullable<T>[]>(<unknown>array?.filter((o) => o !== undefined && o !== null))
+    public static noNull<T>(array: ReadonlyArray<T>): NonNullable<T>[] {
+        return Lists.noNull(array)
     }
 
     public static Hist(array: ReadonlyArray<string>): Map<string, number> {
@@ -195,29 +174,6 @@ In the case that MapComplete is pointed to the testing grounds, the edit will be
         }
         return hist
     }
-
-    /**
-     * Removes all empty strings from this list
-     * If undefined or null is given, an empty list is returned
-     *
-     * Utils.NoEmpty(undefined) // => []
-     * Utils.NoEmpty(["abc","","def", null]) // => ["abc","def", null]
-     *
-     */
-    public static NoEmpty(array: string[]): string[] {
-        const ls: string[] = []
-        if (!array) {
-            return ls
-        }
-        for (const t of array) {
-            if (t === "") {
-                continue
-            }
-            ls.push(t)
-        }
-        return ls
-    }
-
     public static EllipsesAfter(str: string, l: number = 100) {
         if (str === undefined || str === null) {
             return undefined
@@ -297,28 +253,6 @@ In the case that MapComplete is pointed to the testing grounds, the edit will be
         }
         return str
     }
-
-    /**
-     * Creates a new array with all elements from 'arr' in such a way that every element will be kept only once
-     * Elements are returned in the same order as they appear in the lists.
-     * Null/Undefined is returned as is. If an emtpy array is given, a new empty array will be returned
-     */
-    public static Dedup(arr: NonNullable<string[]>): NonNullable<string[]>
-    public static Dedup(arr: undefined): undefined
-    public static Dedup(arr: string[] | undefined): string[] | undefined
-    public static Dedup(arr: string[]): string[] {
-        if (arr === undefined || arr === null) {
-            return arr
-        }
-        const newArr = []
-        for (const string of arr) {
-            if (newArr.indexOf(string) < 0) {
-                newArr.push(string)
-            }
-        }
-        return newArr
-    }
-
     public static DedupT<T>(arr: T[]): T[] {
         if (!arr) {
             return arr
@@ -359,7 +293,7 @@ In the case that MapComplete is pointed to the testing grounds, the edit will be
                     uniq.push(img)
                 }
             } else {
-                const ksNoNull = Utils.NoNull(ks)
+                const ksNoNull = Lists.noNull(ks)
                 const hasBeenSeen = ksNoNull.some((k) => seen.has(k))
                 if (!hasBeenSeen) {
                     uniq.push(img)
@@ -1213,7 +1147,7 @@ In the case that MapComplete is pointed to the testing grounds, the edit will be
         if (days > 0) {
             return days + "days" + " " + hours + "h"
         }
-        return hours + ":" + Utils.TwoDigits(minutes) + ":" + Utils.TwoDigits(seconds)
+        return hours + ":" + Utils.twoDigits(minutes) + ":" + Utils.twoDigits(seconds)
     }
 
     public static toHumanByteSize(bytes: number): string {
@@ -1247,9 +1181,9 @@ In the case that MapComplete is pointed to the testing grounds, the edit will be
         const date =
             lastWeek.getFullYear() +
             "-" +
-            Utils.TwoDigits(lastWeek.getMonth() + 1) +
+            Utils.twoDigits(lastWeek.getMonth() + 1) +
             "-" +
-            Utils.TwoDigits(lastWeek.getDate())
+            Utils.twoDigits(lastWeek.getDate())
         let osmcha_link = `"date__gte":[{"label":"${date}","value":"${date}"}],"editor":[{"label":"mapcomplete","value":"mapcomplete"}]`
         if (theme !== undefined) {
             osmcha_link =
@@ -1833,16 +1767,6 @@ In the case that MapComplete is pointed to the testing grounds, the edit will be
         }
         return 50 * Math.round(number / 50)
     }
-
-    public static NoNullInplace<T>(items: T[]): T[] {
-        for (let i = items.length - 1; i >= 0; i--) {
-            if (items[i] === null || items[i] === undefined || items[i] === "") {
-                items.splice(i, 1)
-            }
-        }
-        return items
-    }
-
     /**
      * Removes or rewrites some characters in links, as some blink/chromium based browsers are picky about them
      *
@@ -1860,8 +1784,6 @@ In the case that MapComplete is pointed to the testing grounds, the edit will be
         return href
     }
 
-    private static emojiRegex = /[\p{Extended_Pictographic}🛰️]/u
-
     /**
      * Returns 'true' if the given string contains at least one and only emoji characters
      *
@@ -1870,19 +1792,9 @@ In the case that MapComplete is pointed to the testing grounds, the edit will be
      * Utils.isEmoji("🍕") // => true
      */
     public static isEmoji(string: string) {
-        return Utils.emojiRegex.test(string) || Utils.isEmojiFlag(string)
+        return  Strings.isEmoji(string)
     }
 
-    /**
-     * Utils.isEmojiFlag("🇧🇪") // => true
-     */
-    public static isEmojiFlag(string: string) {
-        return /[🇦-🇿]{2}/u.test(string) // flags, see https://stackoverflow.com/questions/53360006/detect-with-regex-if-emoji-is-country-flag
-    }
-
-    public static concat<T>(param: T[][]): T[] {
-        return [].concat(...param)
-    }
 
     /**
      *
@@ -1905,9 +1817,4 @@ In the case that MapComplete is pointed to the testing grounds, the edit will be
         return <T>copy
     }
 
-    public static pass(){
-        // Does nothing
-    }
-
-
 }

src/Utils/Lists.ts

@@ -0,0 +1,89 @@
+/**
+ * Various utils to manipulate lists
+ */
+export class Lists {
+    /**
+     * Creates a shallow copy of the array. All elements that are not undefined/null will be in the new list
+     */
+    public static noNull<T>(array: ReadonlyArray<T> | undefined): T[] | undefined
+    public static noNull(array: undefined): undefined
+    public static noNull<T>(array: ReadonlyArray<T>): T[]
+    public static noNull<T>(array: ReadonlyArray<T>): NonNullable<T>[] {
+        return <NonNullable<T>[]>(<unknown>array?.filter((o) => o !== undefined && o !== null))
+    }
+
+    /**
+     * Removes all empty strings from this list
+     * If undefined or null is given, an empty list is returned
+     *
+     * Lists.noEmpty(undefined) // => []
+     * Lists.noEmpty(["abc","","def", null]) // => ["abc","def", null]
+     *
+     */
+    public static noEmpty(array: undefined | null): string[]
+    public static noEmpty(array: undefined[]): undefined[]
+    public static noEmpty(array: (string | "")[]): Exclude<string, "">[]
+    public static noEmpty(array: (string | undefined | null | "")[]): (string | undefined | null)[]
+    public static noEmpty(array: string[]): string[] {
+        const ls: string[] = []
+        if (!array) {
+            return ls
+        }
+        for (const t of array) {
+            if (t === "") {
+                continue
+            }
+            ls.push(t)
+        }
+        return ls
+    }
+
+    /**
+     * Creates a new array with all elements from 'arr' in such a way that every element will be kept only once
+     * Elements are returned in the same order as they appear in the lists.
+     * Null/Undefined is returned as is. If an empty array is given, a new empty array will be returned
+     */
+    public static dedup(arr: NonNullable<string[]>): NonNullable<string[]>
+    public static dedup(arr: undefined): undefined
+    public static dedup(arr: string[] | undefined): string[] | undefined
+    public static dedup(arr: string[]): string[] {
+        if (arr === undefined || arr === null) {
+            return arr
+        }
+        const newArr = []
+        for (const string of arr) {
+            if (newArr.indexOf(string) < 0) {
+                newArr.push(string)
+            }
+        }
+        return newArr
+    }
+
+    public static dedupT<T>(arr: ReadonlyArray<T>): T[] ;
+    public static dedupT<T>(arr: null): null ;
+    public static dedupT<T>(arr: undefined): undefined ;
+    public static dedupT<T>(arr: ReadonlyArray<T>): T[] {
+        if (arr === undefined) {
+            return undefined
+        }
+        if (arr === null) {
+            return null
+        }
+        const items = []
+        for (const item of arr) {
+            if (items.indexOf(item) < 0) {
+                items.push(item)
+            }
+        }
+        return items
+    }
+
+    public static noNullInplace<T>(items: T[]): T[] {
+        for (let i = items.length - 1; i >= 0; i--) {
+            if (items[i] === null || items[i] === undefined || items[i] === "") {
+                items.splice(i, 1)
+            }
+        }
+        return items
+    }
+}

src/Utils/Strings.ts

@@ -0,0 +1,25 @@
+/**
+ * Various string-related utils
+ */
+export class Strings{
+     private static emojiRegex = /[\p{Extended_Pictographic}🛰️]/u
+
+    /**
+     * Returns 'true' if the given string contains at least one and only emoji characters
+     *
+     * Strings.isEmoji("⛰\uFE0F") // => true
+     * Strings.isEmoji("🇧🇪") // => true
+     * Strings.isEmoji("🍕") // => true
+     */
+    public static isEmoji(string: string): boolean {
+        return Strings.emojiRegex.test(string) || Strings.isEmojiFlag(string)
+    }
+
+    /**
+     * Strings.isEmojiFlag("🇧🇪") // => true
+     */
+    public static isEmojiFlag(string: string): boolean {
+        return /[🇦-🇿]{2}/u.test(string) // flags, see https://stackoverflow.com/questions/53360006/detect-with-regex-if-emoji-is-country-flag
+    }
+
+}