gulp-coffeescript/index.js

Compile CoffeeScript 2 files

var path = require('path');
var merge = require('merge');
var gutil = require('gulp-util');
var through = require('through2');
var coffeescript = require('coffeescript');
var applySourceMap = require('vinyl-sourcemaps-apply');

var PluginError = gutil.PluginError;


module.exports = function (opt) {
	function replaceExtension(path) {
		path = path.replace(/\.coffee\.md$/, '.litcoffee');
		return gutil.replaceExtension(path, '.js');
	}

	function transform(file, enc, cb) {
		if (file.isNull()) return cb(null, file);
		if (file.isStream()) return cb(new PluginError('gulp-coffeescript', 'Streaming not supported'));

		var data;
		var str = file.contents.toString('utf8');
		var dest = replaceExtension(file.path);

		var options = merge({
			bare: false,
			header: false,
			sourceMap: !!file.sourceMap,
			sourceRoot: false,
			literate: /\.(litcoffee|coffee\.md)$/.test(file.path),
			filename: file.path,
			sourceFiles: [file.relative],
			generatedFile: replaceExtension(file.relative)
		}, opt);

		try {
			data = coffeescript.compile(str, options);
		} catch (err) {
			return cb(new PluginError('gulp-coffeescript', err));
		}

		if (data && data.v3SourceMap && file.sourceMap) {
			applySourceMap(file, data.v3SourceMap);
			file.contents = new Buffer(data.js);
		} else {
			file.contents = new Buffer(data);
		}

		file.path = dest;
		cb(null, file);
	}

	return through.obj(transform);
};