Add progressive web app companion for cross-platform access

Vite + TypeScript PWA that mirrors the Android app's core features:
- Pre-processed shelter data (build-time UTM33N→WGS84 conversion)
- Leaflet map with shelter markers, user location, and offline tiles
- Canvas compass arrow (ported from DirectionArrowView.kt)
- IndexedDB shelter cache with 7-day staleness check
- Service worker with CacheFirst tiles and precached app shell
- i18n for en, nb, nn (ported from Android strings.xml)
- iOS/Android compass handling with low-pass filter
- Respects user map interaction (no auto-snap on pan/zoom)
- Build revision cache-breaker for reliable SW updates

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

pwa/node_modules/ajv/lib/compile/errors.ts

@@ -0,0 +1,184 @@
+import type {KeywordErrorCxt, KeywordErrorDefinition} from "../types"
+import type {SchemaCxt} from "./index"
+import {CodeGen, _, str, strConcat, Code, Name} from "./codegen"
+import {SafeExpr} from "./codegen/code"
+import {getErrorPath, Type} from "./util"
+import N from "./names"
+
+export const keywordError: KeywordErrorDefinition = {
+  message: ({keyword}) => str`must pass "${keyword}" keyword validation`,
+}
+
+export const keyword$DataError: KeywordErrorDefinition = {
+  message: ({keyword, schemaType}) =>
+    schemaType
+      ? str`"${keyword}" keyword must be ${schemaType} ($data)`
+      : str`"${keyword}" keyword is invalid ($data)`,
+}
+
+export interface ErrorPaths {
+  instancePath?: Code
+  schemaPath?: string
+  parentSchema?: boolean
+}
+
+export function reportError(
+  cxt: KeywordErrorCxt,
+  error: KeywordErrorDefinition = keywordError,
+  errorPaths?: ErrorPaths,
+  overrideAllErrors?: boolean
+): void {
+  const {it} = cxt
+  const {gen, compositeRule, allErrors} = it
+  const errObj = errorObjectCode(cxt, error, errorPaths)
+  if (overrideAllErrors ?? (compositeRule || allErrors)) {
+    addError(gen, errObj)
+  } else {
+    returnErrors(it, _`[${errObj}]`)
+  }
+}
+
+export function reportExtraError(
+  cxt: KeywordErrorCxt,
+  error: KeywordErrorDefinition = keywordError,
+  errorPaths?: ErrorPaths
+): void {
+  const {it} = cxt
+  const {gen, compositeRule, allErrors} = it
+  const errObj = errorObjectCode(cxt, error, errorPaths)
+  addError(gen, errObj)
+  if (!(compositeRule || allErrors)) {
+    returnErrors(it, N.vErrors)
+  }
+}
+
+export function resetErrorsCount(gen: CodeGen, errsCount: Name): void {
+  gen.assign(N.errors, errsCount)
+  gen.if(_`${N.vErrors} !== null`, () =>
+    gen.if(
+      errsCount,
+      () => gen.assign(_`${N.vErrors}.length`, errsCount),
+      () => gen.assign(N.vErrors, null)
+    )
+  )
+}
+
+export function extendErrors({
+  gen,
+  keyword,
+  schemaValue,
+  data,
+  errsCount,
+  it,
+}: KeywordErrorCxt): void {
+  /* istanbul ignore if */
+  if (errsCount === undefined) throw new Error("ajv implementation error")
+  const err = gen.name("err")
+  gen.forRange("i", errsCount, N.errors, (i) => {
+    gen.const(err, _`${N.vErrors}[${i}]`)
+    gen.if(_`${err}.instancePath === undefined`, () =>
+      gen.assign(_`${err}.instancePath`, strConcat(N.instancePath, it.errorPath))
+    )
+    gen.assign(_`${err}.schemaPath`, str`${it.errSchemaPath}/${keyword}`)
+    if (it.opts.verbose) {
+      gen.assign(_`${err}.schema`, schemaValue)
+      gen.assign(_`${err}.data`, data)
+    }
+  })
+}
+
+function addError(gen: CodeGen, errObj: Code): void {
+  const err = gen.const("err", errObj)
+  gen.if(
+    _`${N.vErrors} === null`,
+    () => gen.assign(N.vErrors, _`[${err}]`),
+    _`${N.vErrors}.push(${err})`
+  )
+  gen.code(_`${N.errors}++`)
+}
+
+function returnErrors(it: SchemaCxt, errs: Code): void {
+  const {gen, validateName, schemaEnv} = it
+  if (schemaEnv.$async) {
+    gen.throw(_`new ${it.ValidationError as Name}(${errs})`)
+  } else {
+    gen.assign(_`${validateName}.errors`, errs)
+    gen.return(false)
+  }
+}
+
+const E = {
+  keyword: new Name("keyword"),
+  schemaPath: new Name("schemaPath"), // also used in JTD errors
+  params: new Name("params"),
+  propertyName: new Name("propertyName"),
+  message: new Name("message"),
+  schema: new Name("schema"),
+  parentSchema: new Name("parentSchema"),
+}
+
+function errorObjectCode(
+  cxt: KeywordErrorCxt,
+  error: KeywordErrorDefinition,
+  errorPaths?: ErrorPaths
+): Code {
+  const {createErrors} = cxt.it
+  if (createErrors === false) return _`{}`
+  return errorObject(cxt, error, errorPaths)
+}
+
+function errorObject(
+  cxt: KeywordErrorCxt,
+  error: KeywordErrorDefinition,
+  errorPaths: ErrorPaths = {}
+): Code {
+  const {gen, it} = cxt
+  const keyValues: [Name, SafeExpr | string][] = [
+    errorInstancePath(it, errorPaths),
+    errorSchemaPath(cxt, errorPaths),
+  ]
+  extraErrorProps(cxt, error, keyValues)
+  return gen.object(...keyValues)
+}
+
+function errorInstancePath({errorPath}: SchemaCxt, {instancePath}: ErrorPaths): [Name, Code] {
+  const instPath = instancePath
+    ? str`${errorPath}${getErrorPath(instancePath, Type.Str)}`
+    : errorPath
+  return [N.instancePath, strConcat(N.instancePath, instPath)]
+}
+
+function errorSchemaPath(
+  {keyword, it: {errSchemaPath}}: KeywordErrorCxt,
+  {schemaPath, parentSchema}: ErrorPaths
+): [Name, string | Code] {
+  let schPath = parentSchema ? errSchemaPath : str`${errSchemaPath}/${keyword}`
+  if (schemaPath) {
+    schPath = str`${schPath}${getErrorPath(schemaPath, Type.Str)}`
+  }
+  return [E.schemaPath, schPath]
+}
+
+function extraErrorProps(
+  cxt: KeywordErrorCxt,
+  {params, message}: KeywordErrorDefinition,
+  keyValues: [Name, SafeExpr | string][]
+): void {
+  const {keyword, data, schemaValue, it} = cxt
+  const {opts, propertyName, topSchemaRef, schemaPath} = it
+  keyValues.push(
+    [E.keyword, keyword],
+    [E.params, typeof params == "function" ? params(cxt) : params || _`{}`]
+  )
+  if (opts.messages) {
+    keyValues.push([E.message, typeof message == "function" ? message(cxt) : message])
+  }
+  if (opts.verbose) {
+    keyValues.push(
+      [E.schema, schemaValue],
+      [E.parentSchema, _`${topSchemaRef}${schemaPath}`],
+      [N.data, data]
+    )
+  }
+  if (propertyName) keyValues.push([E.propertyName, propertyName])
+}