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index.ts
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index.ts
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import { NativeModules, Platform } from 'react-native';
const isAndroid = Platform.OS === 'android';
const LINKING_ERROR =
`The package 'fast-mlkit-translate-text' doesn't seem to be linked. Make sure: \n\n` +
Platform.select({ ios: "- You have run 'pod install'\n", default: '' }) +
'- You rebuilt the app after installing the package\n' +
'- You are not using Expo Go\n';
// @ts-expect-error
const isTurboModuleEnabled = global.__turboModuleProxy != null;
const FastMlkitTranslateTextModule = isTurboModuleEnabled
? require('./src/NativeFastMlkitTranslateText').default
: NativeModules.FastMlkitTranslateText;
const NativeMLKitTranslator = FastMlkitTranslateTextModule
? FastMlkitTranslateTextModule
: new Proxy(
{},
{
get() {
throw new Error(LINKING_ERROR);
},
}
);
const LanguageTags: any = {
'Afrikaans': 'af',
'Arabic': 'ar',
'Belarusian': 'be',
'Bulgarian': 'bg',
'Bengali': 'bn',
'Catalan': 'ca',
'Czech': 'cs',
'Welsh': 'cy',
'Danish': 'da',
'German': 'de',
'Greek': 'el',
'English': 'en',
'Esperanto': 'eo',
'Spanish': 'es',
'Estonian': 'et',
'Persian': 'fa',
'Finnish': 'fi',
'French': 'fr',
'Irish': 'ga',
'Galician': 'gl',
'Gujarati': 'gu',
'Hebrew': 'he',
'Hindi': 'hi',
'Croatian': 'hr',
'Haitian': 'ht',
'Hungarian': 'hu',
'Indonesian': 'id',
'Icelandic': 'is',
'Italian': 'it',
'Japanese': 'ja',
'Georgian': 'ka',
'Kannada': 'kn',
'Korean': 'ko',
'Lithuanian': 'lt',
'Latvian': 'lv',
'Macedonian': 'mk',
'Marathi': 'mr',
'Malay': 'ms',
'Maltese': 'mt',
'Dutch': 'nl',
'Norwegian': 'no',
'Polish': 'pl',
'Portuguese': 'pt',
'Romanian': 'ro',
'Russian': 'ru',
'Slovak': 'sk',
'Slovenian': 'sl',
'Albanian': 'sq',
'Swedish': 'sv',
'Swahili': 'sw',
'Tamil': 'ta',
'Telugu': 'te',
'Thai': 'th',
'Tagalog': 'tl',
'Turkish': 'tr',
'Ukrainian': 'uk',
'Urdu': 'ur',
'Vietnamese': 'vi',
'Chinese': 'zh',
}
const TagLanguages: any = {
'af': 'Afrikaans',
'ar': 'Arabic',
'be': 'Belarusian',
'bg': 'Bulgarian',
'bn': 'Bengali',
'ca': 'Catalan',
'cs': 'Czech',
'cy': 'Welsh',
'da': 'Danish',
'de': 'German',
'el': 'Greek',
'en': 'English',
'eo': 'Esperanto',
'es': 'Spanish',
'et': 'Estonian',
'fa': 'Persian',
'fi': 'Finnish',
'fr': 'French',
'ga': 'Irish',
'gl': 'Galician',
'gu': 'Gujarati',
'he': 'Hebrew',
'hi': 'Hindi',
'hr': 'Croatian',
'ht': 'Haitian',
'hu': 'Hungarian',
'id': 'Indonesian',
'is': 'Icelandic',
'it': 'Italian',
'ja': 'Japanese',
'ka': 'Georgian',
'kn': 'Kannada',
'ko': 'Korean',
'lt': 'Lithuanian',
'lv': 'Latvian',
'mk': 'Macedonian',
'mr': 'Marathi',
'ms': 'Malay',
'mt': 'Maltese',
'nl': 'Dutch',
'no': 'Norwegian',
'pl': 'Polish',
'pt': 'Portuguese',
'ro': 'Romanian',
'ru': 'Russian',
'sk': 'Slovak',
'sl': 'Slovenian',
'sq': 'Albanian',
'sv': 'Swedish',
'sw': 'Swahili',
'ta': 'Tamil',
'te': 'Telugu',
'th': 'Thai',
'tl': 'Tagalog',
'tr': 'Turkish',
'uk': 'Ukrainian',
'ur': 'Urdu',
'vi': 'Vietnamese',
'zh': 'Chinese',
}
export type Languages = 'Afrikaans' | 'Arabic' | 'Belarusian' | 'Bulgarian' | 'Bengali' | 'Catalan' | 'Czech' | 'Welsh' | 'Danish' | 'German' | 'Greek' | 'English' | 'Esperanto' | 'Spanish' | 'Estonian' | 'Persian' | 'Finnish' | 'French' | 'Irish' | 'Galician' | 'Gujarati' | 'Hebrew' | 'Hindi' | 'Croatian' | 'Haitian' | 'Hungarian' | 'Indonesian' | 'Icelandic' | 'Italian' | 'Japanese' | 'Georgian' | 'Kannada' | 'Korean' | 'Lithuanian' | 'Latvian' | 'Macedonian' | 'Marathi' | 'Malay' | 'Maltese' | 'Dutch' | 'Norwegian' | 'Polish' | 'Portuguese' | 'Romanian' | 'Russian' | 'Slovak' | 'Slovenian' | 'Albanian' | 'Swedish' | 'Swahili' | 'Tamil' | 'Telugu' | 'Thai' | 'Tagalog' | 'Turkish' | 'Ukrainian' | 'Urdu' | 'Vietnamese' | 'Chinese';
export default class FastTranslator {
private static getLanguageTag(lang: string): string {
let __lang = LanguageTags[lang];
if (__lang == undefined) {
throw new Error(`Unsupported Language [${__lang}]`);
}
return __lang;
}
private static __languages: string[] = [];
private static __languageTags: string[] = [];
static get languages() {
if (this.__languages.length == 0) {
this.__languages = Object.keys(LanguageTags);
}
return this.__languages;
}
static get languageTags() {
if (this.__languageTags.length == 0) {
this.__languageTags = Object.keys(TagLanguages);
}
return this.__languageTags;
}
static languageFromTag(tag: string): Languages | undefined {
return TagLanguages[tag];
}
static tagFromLanguage(lang: Languages): string | undefined {
return LanguageTags[lang];
}
static async prepare(options: {
source: Languages;
target: Languages;
downloadIfNeeded?: boolean;
}) {
if (NativeMLKitTranslator == null) return false;
let __options: any = { ...options };
let __source = this.getLanguageTag(options.source);
let __target = this.getLanguageTag(options.target);
__options.source = __source;
__options.target = __target;
return await NativeMLKitTranslator.prepare(__options);
}
static async translate(text: string) {
if (NativeMLKitTranslator == null) return "";
return await NativeMLKitTranslator.translate(text);
};
/**
*
* @returns Array<Language-Tag>
*/
static async getDownloadedLanguageModels() {
if (NativeMLKitTranslator == null) return [];
return await NativeMLKitTranslator.getDownloadedLanguageModels();
}
static async deleteLanguageModel(lang: Languages): Promise<boolean> {
if (NativeMLKitTranslator == null) return false;
let __lang = this.getLanguageTag(lang);
let ok = await NativeMLKitTranslator.deleteLanguageModel(__lang);
return isAndroid ? ok : (ok > 0);
};
static async downloadLanguageModel(lang: Languages): Promise<boolean> {
if (NativeMLKitTranslator == null) return false;
let __lang = this.getLanguageTag(lang);
let ok = await NativeMLKitTranslator.downloadLanguageModel(__lang);
return isAndroid ? ok : (ok > 0);
}
static async isLanguageDownloaded(lang: Languages): Promise<boolean> {
if (NativeMLKitTranslator == null) return false;
let __lang = this.getLanguageTag(lang);
let ok = await NativeMLKitTranslator.isLanguageDownloaded(__lang);
return isAndroid ? ok : (ok > 0);
}
static async setIdentifyConfidence(confidence: number) {
if (NativeMLKitTranslator == null) return;
return await NativeMLKitTranslator.setIdentifyConfidence(confidence);
}
/**
*
* @param text
* @returns Language-Tag
*/
static async identify(text: string) {
if (NativeMLKitTranslator == null) return "";
return await NativeMLKitTranslator.identify(text);
}
/**
*
* @param text
* @returns Object{lang:Language-Tag,confidence:number}
*/
static async identifyPossible(text: string) {
let empty: Array<{ lang: string; confidence: number }> = [];
if (NativeMLKitTranslator == null) return empty;
return await NativeMLKitTranslator.identifyPossible(text);
}
}