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206
vendor/yomitan/js/dictionary/dictionary-worker.js
vendored
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206
vendor/yomitan/js/dictionary/dictionary-worker.js
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/*
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* Copyright (C) 2023-2025 Yomitan Authors
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* Copyright (C) 2021-2022 Yomichan Authors
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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import {ExtensionError} from '../core/extension-error.js';
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import {DictionaryImporterMediaLoader} from './dictionary-importer-media-loader.js';
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export class DictionaryWorker {
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constructor() {
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/** @type {DictionaryImporterMediaLoader} */
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this._dictionaryImporterMediaLoader = new DictionaryImporterMediaLoader();
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}
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/**
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* @param {ArrayBuffer} archiveContent
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* @param {import('dictionary-importer').ImportDetails} details
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* @param {?import('dictionary-worker').ImportProgressCallback} onProgress
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* @returns {Promise<import('dictionary-importer').ImportResult>}
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*/
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importDictionary(archiveContent, details, onProgress) {
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return this._invoke(
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'importDictionary',
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{details, archiveContent},
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[archiveContent],
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onProgress,
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this._formatImportDictionaryResult.bind(this),
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);
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}
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/**
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* @param {string} dictionaryTitle
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* @param {?import('dictionary-worker').DeleteProgressCallback} onProgress
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* @returns {Promise<void>}
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*/
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deleteDictionary(dictionaryTitle, onProgress) {
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return this._invoke('deleteDictionary', {dictionaryTitle}, [], onProgress, null);
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}
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/**
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* @param {string[]} dictionaryNames
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* @param {boolean} getTotal
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* @returns {Promise<import('dictionary-database').DictionaryCounts>}
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*/
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getDictionaryCounts(dictionaryNames, getTotal) {
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return this._invoke('getDictionaryCounts', {dictionaryNames, getTotal}, [], null, null);
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}
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// Private
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/**
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* @template [TParams=import('core').SerializableObject]
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* @template [TResponseRaw=unknown]
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* @template [TResponse=unknown]
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* @param {string} action
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* @param {TParams} params
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* @param {Transferable[]} transfer
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* @param {?(arg: import('core').SafeAny) => void} onProgress
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* @param {?(result: TResponseRaw) => TResponse} formatResult
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*/
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_invoke(action, params, transfer, onProgress, formatResult) {
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return new Promise((resolve, reject) => {
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const worker = new Worker('/js/dictionary/dictionary-worker-main.js', {type: 'module'});
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/** @type {import('dictionary-worker').InvokeDetails<TResponseRaw, TResponse>} */
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const details = {
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complete: false,
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worker,
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resolve,
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reject,
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onMessage: null,
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onProgress,
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formatResult,
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};
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// Ugly typecast below due to not being able to explicitly state the template types
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/** @type {(event: MessageEvent<import('dictionary-worker').MessageData<TResponseRaw>>) => void} */
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const onMessage = /** @type {(details: import('dictionary-worker').InvokeDetails<TResponseRaw, TResponse>, event: MessageEvent<import('dictionary-worker').MessageData<TResponseRaw>>) => void} */ (this._onMessage).bind(this, details);
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details.onMessage = onMessage;
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worker.addEventListener('message', onMessage);
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worker.postMessage({action, params}, transfer);
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});
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}
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/**
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* @template [TResponseRaw=unknown]
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* @template [TResponse=unknown]
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* @param {import('dictionary-worker').InvokeDetails<TResponseRaw, TResponse>} details
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* @param {MessageEvent<import('dictionary-worker').MessageData<TResponseRaw>>} event
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*/
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_onMessage(details, event) {
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if (details.complete) { return; }
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const {action, params} = event.data;
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switch (action) {
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case 'complete':
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{
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const {worker, resolve, reject, onMessage, formatResult} = details;
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if (worker === null || onMessage === null || resolve === null || reject === null) { return; }
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details.complete = true;
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details.worker = null;
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details.resolve = null;
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details.reject = null;
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details.onMessage = null;
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details.onProgress = null;
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details.formatResult = null;
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worker.removeEventListener('message', onMessage);
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worker.terminate();
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this._onMessageComplete(params, resolve, reject, formatResult);
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}
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break;
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case 'progress':
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this._onMessageProgress(params, details.onProgress);
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break;
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case 'getImageDetails':
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{
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const {worker} = details;
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if (worker === null) { return; }
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void this._onMessageGetImageDetails(params, worker);
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}
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break;
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}
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}
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/**
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* @template [TResponseRaw=unknown]
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* @template [TResponse=unknown]
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* @param {import('dictionary-worker').MessageCompleteParams<TResponseRaw>} params
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* @param {(result: TResponse) => void} resolve
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* @param {(reason?: import('core').RejectionReason) => void} reject
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* @param {?(result: TResponseRaw) => TResponse} formatResult
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*/
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_onMessageComplete(params, resolve, reject, formatResult) {
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const {error} = params;
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if (typeof error !== 'undefined') {
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reject(ExtensionError.deserialize(error));
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} else {
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const {result} = params;
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if (typeof formatResult === 'function') {
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let result2;
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try {
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result2 = formatResult(result);
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} catch (e) {
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reject(e);
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return;
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}
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resolve(result2);
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} else {
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// If formatResult is not provided, the response is assumed to be the same type
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// For some reason, eslint thinks the TResponse type is undefined
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// eslint-disable-next-line jsdoc/no-undefined-types
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resolve(/** @type {TResponse} */ (/** @type {unknown} */ (result)));
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}
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}
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}
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/**
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* @param {import('dictionary-worker').MessageProgressParams} params
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* @param {?(...args: unknown[]) => void} onProgress
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*/
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_onMessageProgress(params, onProgress) {
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if (typeof onProgress !== 'function') { return; }
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const {args} = params;
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onProgress(...args);
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}
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/**
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* @param {import('dictionary-worker').MessageGetImageDetailsParams} params
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* @param {Worker} worker
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*/
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async _onMessageGetImageDetails(params, worker) {
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const {id, content, mediaType} = params;
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/** @type {Transferable[]} */
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const transfer = [];
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let response;
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try {
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const result = await this._dictionaryImporterMediaLoader.getImageDetails(content, mediaType, transfer);
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response = {id, result};
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} catch (e) {
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response = {id, error: ExtensionError.serialize(e)};
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}
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worker.postMessage({action: 'getImageDetails.response', params: response}, transfer);
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}
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/**
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* @param {import('dictionary-worker').MessageCompleteResultSerialized} response
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* @returns {import('dictionary-worker').MessageCompleteResult}
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*/
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_formatImportDictionaryResult(response) {
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const {result, errors} = response;
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return {
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result,
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errors: errors.map((error) => ExtensionError.deserialize(error)),
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};
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}
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}
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