i18n-checker

Validate translation files

Usage

checker(options, (err, report) => {
  if (err) {
    console.log(err);
  } else {
    console.log('Report:', report);
  }
});

Where options is an object with:

• baseDir: the absolute path to the base directory that contains directories to scan
• dirs: list of directories, in which:
  • localeDir: relative path to the directory containing locale files (.json files)
  • core: true if current directory contains core locale files. One of the directories in the list must be marked as core.
• verifyOptions: options to verify locale files
  • defaultLocale: the default locale (default: 'en')
  • locales: list of locales (e.g. ['en', 'fr', 'vi'])
  • rules: list of rules to check (omit to check all rules)

Example

const checker = require('i18n-checker');
const reporter = checker.reporters.standard;

const options = {
  baseDir: __dirname,
  dirs: [{
    localeDir: 'backend/i18n/locales',
    core: true
  }, {
    localeDir: 'modules/contact/i18n/locales'
  }, {
    localeDir: 'modules/calendar/i18n/locales'
  }],
  verifyOptions: {
    defaultLocale: 'en',
    locales: ['en', 'fr', 'vi'],
    rules: [
      'all-locales-present',
      'valid-json-file',
      'default-locale-translate',
      'no-duplicate-with-core',
      'all-keys-translated'
    ]
  }
};

checker(options, (err, report) {
  reporter(report);
});

Rules

all-keys-translated

All keys translated in default locale must be translated in other locales.

all-locales-present

All directories must contain translation files for all locales defined in options.verifyOptions.locales list.

default-locale-translate

In translation file of the default locale, value must have the same value as key.

key-trimmed

No white space character at the beginning or the end of the key.

no-duplicate-among-modules

Keys are duplicated between modules should be in core.

no-duplicate-with-core

Keys are translated in core module must not be translated again in modules.

no-untranslated-key

All keys used in template files must be translated.

no-unused-key

All locale keys defined in core module must be used in core's template files or modules's template files.

All locale keys defined in a module must be used in that module's template files.

valid-json-file

Every translation files must be valid JSON file and has no duplicate keys.

Development

Run tests

grunt lint # lint JS files
grunt test # run test cases
grunt # grunt lint test

Write a new rule

1/ Create a new file in src/rules directory named rule-id.js.

2/ Each rule is a function, it receives the options and returns a promise which resolves the report:

module.exports = function(options) {
  const report = [{
    filePath: 'module/contact/en.json',
    messages: [{
      severity: 2,
      message: 'something wrong'
    }, {
      //....
    }]
  }, {
    filePath: 'module/calendar/vi.json',
    messages: [{
      severity: 1,
      message: 'something not OK'
    }]
  }];

  return q(report);
}

3/ Update documentation and write test for the new rule.

Licence

Affero GPL v3