class.translate.js

class Tr {
  static request({
    method = "GET",
    url,
    params,
    responseType,
    data,
    headers
  }) {
    return new Promise((resolve, reject) => {
      if (params) {
        const sep = url.includes("?") ? "&" : "?"
        url += sep + new URLSearchParams(params).toString()
      }
      GM_xmlhttpRequest({
        method,
        url,
        responseType,
        data,
        headers,
        onload(res) {
          if (res.status >= 300) return reject()
          resolve(res.response)
        },
        onerror: reject
      })
    })
  }
  static async google(text, to) {
    const data = await request({
      url: "https://translate.google.com/translate_a/single",
      params: {
        q: text,
        client: "gtx",
        sl: "auto",
        tl: to,
        dt: "at"
      },
      responseType: "json"
    })
    const language = { from: data[8][0][0], to }
    const translations = data[5]?.map(item => item[2]?.[0]?.[0]).filter(Boolean)
    return { language, translations }
  }
}

free.js

const TRANSLATION_URL = "https://translate.google.com/translate_a/single?client=gtx&sl=auto&tl=zh-CN&hl=zh-CN&dt=at&dt=bd&dt=ex&dt=ld&dt=md&dt=qca&dt=rw&dt=rm&dt=ss&dt=t&otf=1&ssel=0&tsel=0&kc=3&q=";
const TRANSLATION_AUDIO_URL = "https://translate.google.com/translate_tts?client=gtx&ie=UTF-8&tl=en&q=";
const BING_TRANSLATION_URL = "https://cn.bing.com/ttranslate";
const service = {
    'com_apis':'https://translate.googleapis.com/translate_a/single',
    'clients5':'https://clients5.google.com/translate_a/t',
    'com':'https://translate.google.com/translate_a/single',
    'tw':'https://translate.google.com.tw/translate_a/single',
    'cn':'https://translate.google.cn/translate_a/single',
}