Transpile

The transpile option gives you complete control over transpiling. After StealTools has created a graph of your project's dependencies it then goes through each and transpiles them into a common format, usually AMD for the multi-build.

If you're using a specific version of Traceur, Babel, or a different transpiler altogether, you might want to use this so that you can do your own transpiling.

Here's an example of usage:

var Babel = require("babel-core");
var stealTools = require("steal-tools");

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

var transpile = function(source, compileOptions){
    var babelOptions = {
        modules: mapFormat[compileOptions.module],
        sourceMap: compileOptions.sourceMaps || false
    };

    return babel.transform(source, opts);
};


stealTools.build({
    config: __dirname + "/package.json!npm"
}, {
    transpile: transpile
});