message: fix(common): fix a duplicate case in the locale switch
diff: const fs = require('fs');
  const yargs = require('yargs').argv;
  -const {I18N_FOLDER, I18N_DATA_FOLDER, RELATIVE_I18N_DATA_FOLDER, HEADER} = require('./extract');
  +const {I18N_DATA_FOLDER, RELATIVE_I18N_DATA_FOLDER, HEADER} = require('./extract');
  const OUTPUT_NAME = `closure-locale.ts`;
  module.exports = (gulp, done) => {
  @@ -43,9 +43,8 @@ module.exports = (gulp, done) => {
  'zh-CN': 'zh-Hans-CN',
  'zh-Hans-CN': 'zh-Hans',
  'zh-HK': 'zh-Hant-HK',
  - 'zh-Hant-HK': 'zh-Hant',
  'zh-TW': 'zh-Hant-TW',
  - 'zh-Hant-TW': 'zh-Hant'
  + 'zh-Hant-TW': 'zh-Hant',
  };
  if (yargs.locales) {
  