1.5.0 • Public • Published

Stone.js Tools

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Tools for extracting/compiling translatable strings from Javascript/HTML sources.

Getting Started

To start using the Stone.js tools, you first have to install them globally:

npm install -g stonejs-tools


See the Stone.js documentation to learn how to internationalize your application:

Extracting Translatable Strings

To extract translatable strings from your Javascript and HTML sources, you should use the stonejs extract command:

stonejs extract [options] <source js/html> <output pot>
  • <source js/html>: all Javascript and HTML files from which translatable string will be extracted (globbing allowed)
  • <output pot>: the output translation template (.pot)

The available options are:

  • --funtions: list of the gettext function names (default=_,gettext,lazyGettext)
  • --pluralFunctions: list of the ngettext function names (default=ngettext,lazyNgettext)
  • --contextFunctions: list of the pgettext function names (default=pgettext,lazyPgettext)
  • --pluralContextFunctions: list of the npgettext function names (default=npgettext,lazyNpgettext)
  • --quiet, -q: do not output progress log to stdout


stonejs extract "src/**/*.js" locales/catalog.pot

stonejs extract --functions="_,gettext,lazyGettext" "src/**/*.js" "*.html" locales/catalog.pot

Translating to a New Language

To start translating to a new langage, just copy the translation template file (.pot) and update the Language and the Plural-Forms fields.

Example: translating to French

First copy the .pot file:

cp locales/catalog.pot locales/fr.po

Then edit it:

"Language: fr\n"
"Plural-Forms: nplurals=2; plural=(n > 1);\n"

NOTE: A list of plural forms for many languages is is available here:

Updating Translations

If you have already translated your app but you have new strings to translate, you can update your .po files to add the new strings to them.

First, extract again your translatable strings to recreate the translation template file (.pot) with the stonejs extract command (see above).

Then you can update your translation files (.po) using the stonejs update command:

stonejs update [options] <po files> <source pot>
  • <po files>: translation files (.po) to update (globbing allowed)
  • <source pot>: the source translation template (.pot)

The available options are:

  • --quiet, -q: do not output progress log to stdout


stonejs locales/*.po locales/catalog.pot

Building Translations

To be used by Stone.js, your translation must be built into one ore more JSON or Javascript files using the stonejs build command:

stonejs build [options] <po files> <output>
  • <po files>: translation files (.po) to build (globbing allowed)
  • <output>: The output directory where built files will be created (or output file if you used the --merge option)

The available options are:

  • --merge: Merge all languages into a single file (default: false)
  • --format: The output format: json, javascript or js (default: json)
  • --quiet, -q: do not output progress log to stdout


stonejs build --format=json locales/*.po locales

stonejs build --merge locales/*.po locales/catalogs.json

stonejs build --format=js --merge locales/*.po locales/catalogs.js

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  • [NEXT] (changes on master but not released yet):

    • Nothing yet ;)
  • v1.5.0:

    • Added support of string with context (pgettext, npgettext,...) (@Krenodeno, #32)
    • Updated dependencies
  • v1.4.0: Update JS parser and enable latest ES syntaxes

  • v1.3.0: Add the line and the column of syntax errors (#25)

  • v1.2.0:

    • Support of plurals (ngettext()) (@jbghoul, #11)
    • Support of gettext_noop() (@jbghoul, #16)
    • Update dependencies
  • v1.1.0:

    • ES6 modules (import / export) support
    • JSX support
    • dependencies updates
    • WARNING: octal literals are not supported anymore!
  • v1.0.8: Adds the .twig extention as HTML file list

  • v1.0.7: Allows string to be extracted from es2015 (ES6) sources

  • v1.0.6: Force encoding to UTF-8 when reading/writing files

  • v1.0.5: Fixes crashes with wrong call of logging functions

  • v1.0.4: Fixes path issue on Window (issue #2)

  • v1.0.3: Fixes crash when the merged po file does not contain line references

  • v1.0.2:

    • Fixes crash when parsing js files containing syntax errors
    • Reporting improved (extracted string ans skipped files count, syntax errors)
  • v1.0.1: Makes stonejs command working on Unix

  • v1.0.0: First Release

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