1  var fs = require('fs');
 2  var glob = require('glob');
 3  
 4  glob(
 5    '**/*.{js,jsx,ts,tsx}',
 6    {ignore: ['**/node_modules/**'], absolute: true},
 7    function (err, filesPaths) {
 8      if (err) {
 9        console.log(err);
10        return;
11      }
12  
13      const i18nSourceFileRelativePath = '/locales/en.json';
14      const i18nSourceFilePath = `${__dirname}${i18nSourceFileRelativePath}`;
15  
16      const sourceJson = fs.readFileSync(i18nSourceFilePath, 'UTF-8');
17      const preSourceTranslations = JSON.parse(sourceJson);
18      const preKeys = Object.keys(preSourceTranslations);
19  
20      const keysToKeep = preKeys.filter(k => k.split('.')[0] === 'PROTECTED');
21      filesPaths.forEach(filePath => {
22        const content = fs.readFileSync(filePath, 'UTF-8');
23  
24        preKeys.forEach(key => {
25          if (content.includes(key) && !keysToKeep.includes(key)) {
26            keysToKeep.push(key);
27  
28            //supports plurals for english source translation
29            if (preKeys.includes(`${key}_plural`)) {
30              keysToKeep.push(`${key}_plural`);
31            }
32          }
33        });
34      });
35  
36      const sourceTranslationsToKeep = {};
37      keysToKeep.sort();
38      keysToKeep.forEach(key => {
39        sourceTranslationsToKeep[key] = preSourceTranslations[key];
40      });
41  
42      const sourceJsonToKeep = JSON.stringify(sourceTranslationsToKeep, null, 4);
43      fs.writeFileSync(i18nSourceFilePath, sourceJsonToKeep);
44      console.warn(
45        `This script is a workaround, ${
46          preKeys.length - keysToKeep.length
47        } keys were removed from the ${i18nSourceFileRelativePath}, please make sure to review them before running i18n-format and adapt the code to avoid future deletion.`
48      );
49    }
50  );