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errors reported by linter fixed
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mcm1957 committed Nov 23, 2024
1 parent 85d102c commit c5afe04
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134 changes: 69 additions & 65 deletions lib/tools.js
Original file line number Diff line number Diff line change
Expand Up @@ -2,98 +2,102 @@ const axios = require('axios').default;

/**
* Tests whether the given variable is a real object and not an Array
* @param {any} it The variable to test
* @returns {it is Record<string, any>}
*
* @param it The variable to test
* @returns
*/
function isObject(it) {
// This is necessary because:
// typeof null === 'object'
// typeof [] === 'object'
// [] instanceof Object === true
return Object.prototype.toString.call(it) === '[object Object]';
// This is necessary because:
// typeof null === 'object'
// typeof [] === 'object'
// [] instanceof Object === true
return Object.prototype.toString.call(it) === '[object Object]';
}

/**
* Tests whether the given variable is really an Array
* @param {any} it The variable to test
* @returns {it is any[]}
*
* @param it The variable to test
* @returns
*/
function isArray(it) {
if (typeof Array.isArray === 'function') return Array.isArray(it);
return Object.prototype.toString.call(it) === '[object Array]';
if (typeof Array.isArray === 'function') {
return Array.isArray(it);
}
return Object.prototype.toString.call(it) === '[object Array]';
}

/**
* Translates text to the target language. Automatically chooses the right translation API.
* @param {string} text The text to translate
* @param {string} targetLang The target languate
* @param {string} [yandexApiKey] The yandex API key. You can create one for free at https://translate.yandex.com/developers
* @returns {Promise<string>}
*
* @param text The text to translate
* @param targetLang The target languate
* @param [yandexApiKey] The yandex API key. You can create one for free at https://translate.yandex.com/developers
* @returns
*/
async function translateText(text, targetLang, yandexApiKey) {
if (targetLang === 'en') {
return text;
} else if (!text) {
return '';
}
if (yandexApiKey) {
return translateYandex(text, targetLang, yandexApiKey);
} else {
return translateGoogle(text, targetLang);
}
if (targetLang === 'en') {
return text;
} else if (!text) {
return '';
}
if (yandexApiKey) {
return translateYandex(text, targetLang, yandexApiKey);
}
return translateGoogle(text, targetLang);
}

/**
* Translates text with Yandex API
* @param {string} text The text to translate
* @param {string} targetLang The target languate
* @param {string} apiKey The yandex API key. You can create one for free at https://translate.yandex.com/developers
* @returns {Promise<string>}
*
* @param text The text to translate
* @param targetLang The target languate
* @param apiKey The yandex API key. You can create one for free at https://translate.yandex.com/developers
* @returns
*/
async function translateYandex(text, targetLang, apiKey) {
if (targetLang === 'zh-cn') {
targetLang = 'zh';
}
try {
const url = `https://translate.yandex.net/api/v1.5/tr.json/translate?key=${apiKey}&text=${encodeURIComponent(text)}&lang=en-${targetLang}`;
const response = await axios({url, timeout: 15000});
if (response.data && response.data.text && isArray(response.data.text)) {
return response.data.text[0];
}
throw new Error('Invalid response for translate request');
} catch (e) {
throw new Error(`Could not translate to "${targetLang}": ${e}`);
}
if (targetLang === 'zh-cn') {
targetLang = 'zh';
}
try {
const url = `https://translate.yandex.net/api/v1.5/tr.json/translate?key=${apiKey}&text=${encodeURIComponent(text)}&lang=en-${targetLang}`;
const response = await axios({ url, timeout: 15000 });
if (response.data && response.data.text && isArray(response.data.text)) {
return response.data.text[0];
}
throw new Error('Invalid response for translate request');
} catch (e) {
throw new Error(`Could not translate to "${targetLang}": ${e}`);
}
}

/**
* Translates text with Google API
* @param {string} text The text to translate
* @param {string} targetLang The target languate
* @returns {Promise<string>}
*
* @param text The text to translate
* @param targetLang The target languate
* @returns
*/
async function translateGoogle(text, targetLang) {
try {
const url = `http://translate.googleapis.com/translate_a/single?client=gtx&sl=en&tl=${targetLang}&dt=t&q=${encodeURIComponent(text)}&ie=UTF-8&oe=UTF-8`;
const response = await axios({url, timeout: 15000});
if (isArray(response.data)) {
// we got a valid response
return response.data[0][0][0];
}
throw new Error('Invalid response for translate request');
} catch (e) {
if (e.response && e.response.status === 429) {
throw new Error(
`Could not translate to "${targetLang}": Rate-limited by Google Translate`
);
} else {
throw new Error(`Could not translate to "${targetLang}": ${e}`);
}
}
try {
const url = `http://translate.googleapis.com/translate_a/single?client=gtx&sl=en&tl=${targetLang}&dt=t&q=${encodeURIComponent(text)}&ie=UTF-8&oe=UTF-8`;
const response = await axios({ url, timeout: 15000 });
if (isArray(response.data)) {
// we got a valid response
return response.data[0][0][0];
}
throw new Error('Invalid response for translate request');
} catch (e) {
if (e.response && e.response.status === 429) {
throw new Error(`Could not translate to "${targetLang}": Rate-limited by Google Translate`);
} else {
throw new Error(`Could not translate to "${targetLang}": ${e}`);
}
}
}

module.exports = {
isArray,
isObject,
translateText
isArray,
isObject,
translateText,
};
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