slt-js

Reference SLT transpiler for JavaScript.

This package implements a simple reference transpiler that recognizes a #!slt <lang> header at the top of a JavaScript source file and replaces localized keywords with canonical JavaScript keywords.

Built-in languages: es (Spanish), fr (French), it (Italian).

Install (development)

# from the package root:
npm install
npm link

This will make the slt-js command available in your PATH.

Usage

# transpile and print to stdout
slt-js example-esp.js

# write output to a file
slt-js example-esp.js -o example.js

# list built-in languages
slt-js --list-langs

# use a custom mapping
slt-js example-esp.js --map maps/es-map.json -o example.js

# strip the SLT header from output
slt-js example-esp.js --strip-header -o example.js

Examples

See examples/ for sample files in Spanish, French, and Italian:

• examples/example-esp.js
• examples/example-fr.js
• examples/example-it.js

Tests

Run tests with:

npm test

Tests are implemented using a small Node.js test runner in test/run-tests.js.

Limitations

This is a reference tool and not a full JS-aware tokenizer. It attempts to avoid altering strings, comments, and template literals, but it is not perfect (especially around regex literals). For production use, integrate with a parser such as acorn or @babel/parser.

License

MIT