funcunit/site/node_modules/transpile/lib/babel_compile.js

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var babel = require("babel-core");
var assign = require('object.assign');

var mapFormat = {
	'commonjs': 'common',
	'amd': 'amd'
};

module.exports = function(source, compileOptions, options){
	var opts = assign({}, options.babelOptions, {
		modules: mapFormat[compileOptions.modules],
		sourceMap: compileOptions.sourceMaps || false
	});
	if(opts.sourceMap) {
		opts.sourceMapName = options.sourceMapFileName;
		opts.sourceFileName = options.sourceMapFileName;
	}

	var result = babel.transform(source, opts);
	return result;
};