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a238b8eee4
GitOrigin-RevId: 11580f8dca22b0d4858dc5db36827b69a3637371
170 lines
3.8 KiB
TypeScript
170 lines
3.8 KiB
TypeScript
/* eslint-disable no-dupe-class-members */
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import { v4 as uuid } from 'uuid'
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import getMeta from '@/utils/meta'
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import { debugConsole } from '@/utils/debugging'
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import { captureException } from '@/infrastructure/error-reporter'
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type SpellMessage = {
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type: 'spell'
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words: string[]
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}
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type SuggestMessage = {
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type: 'suggest'
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word: string
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}
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type AddWordMessage = {
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type: 'add_word'
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word: string
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}
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type RemoveWordMessage = {
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type: 'remove_word'
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word: string
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}
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type DestroyMessage = {
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type: 'destroy'
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}
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type Message = { id?: string } & (
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| SpellMessage
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| SuggestMessage
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| AddWordMessage
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| RemoveWordMessage
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| DestroyMessage
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)
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type EmptyResult = Record<string, never>
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type ErrorResult = {
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error: true
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}
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type SpellResult = {
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misspellings: { index: number }[]
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}
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type SuggestResult = {
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suggestions: string[]
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}
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type ResultCallback =
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| ((value: SpellResult | ErrorResult) => void)
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| ((value: SuggestResult | ErrorResult) => void)
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| ((value: EmptyResult | ErrorResult) => void)
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export class HunspellManager {
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baseAssetPath: string
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dictionariesRoot: string
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hunspellWorker!: Worker
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abortController: AbortController | undefined
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listening = false
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loaded = false
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loadingFailed = false
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pendingMessages: Message[] = []
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callbacks: Map<string, ResultCallback> = new Map()
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constructor(
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private readonly language: string,
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private readonly learnedWords: string[]
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) {
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this.baseAssetPath = new URL(
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getMeta('ol-baseAssetPath'),
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window.location.href
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).toString()
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this.dictionariesRoot = getMeta('ol-dictionariesRoot')
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this.hunspellWorker = new Worker(
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/* webpackChunkName: "hunspell-worker" */
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new URL('./hunspell.worker.ts', import.meta.url),
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{ type: 'module' }
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)
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this.hunspellWorker.addEventListener('message', this.receive.bind(this))
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}
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destroy() {
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this.send({ type: 'destroy' }, () => {
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this.hunspellWorker.terminate()
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})
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}
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send(
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message: AddWordMessage,
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callback: (value: EmptyResult | ErrorResult) => void
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): void
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send(
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message: RemoveWordMessage,
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callback: (value: EmptyResult | ErrorResult) => void
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): void
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send(
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message: DestroyMessage,
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callback: (value: EmptyResult | ErrorResult) => void
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): void
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send(
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message: SuggestMessage,
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callback: (value: SuggestResult | ErrorResult) => void
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): void
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send(
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message: SpellMessage,
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callback: (value: SpellResult | ErrorResult) => void
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): void
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send(message: Message, callback: ResultCallback): void {
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if (this.loadingFailed) {
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return // ignore the message
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}
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if (callback) {
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message.id = uuid()
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this.callbacks.set(message.id, callback)
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}
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if (this.listening) {
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this.hunspellWorker.postMessage(message)
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} else {
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this.pendingMessages.push(message)
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}
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}
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receive(event: MessageEvent) {
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debugConsole.log(event.data)
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const { id, ...rest } = event.data
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if (id) {
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const callback = this.callbacks.get(id)
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if (callback) {
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this.callbacks.delete(id)
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callback(rest)
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}
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} else if (rest.listening) {
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this.listening = true
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this.hunspellWorker.postMessage({
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type: 'init',
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lang: this.language,
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learnedWords: this.learnedWords, // TODO: add words
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baseAssetPath: this.baseAssetPath,
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dictionariesRoot: this.dictionariesRoot,
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})
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for (const message of this.pendingMessages) {
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this.hunspellWorker.postMessage(message)
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this.pendingMessages.length = 0
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}
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} else if (rest.loaded) {
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this.loaded = true
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} else if (rest.loadingFailed) {
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captureException(new Error('Spell check loading failed'), {
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tags: { ol_spell_check_language: this.language },
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})
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this.loadingFailed = true
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this.pendingMessages.length = 0
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}
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}
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}
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