87 lines
2.6 KiB
JavaScript
87 lines
2.6 KiB
JavaScript
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/*
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* Traceur, Babel and TypeScript transpile hook for Loader
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*/
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var transpile = (function() {
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// use Traceur by default
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Loader.prototype.transpiler = 'traceur';
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function transpile(load) {
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var self = this;
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return Promise.resolve(__global[self.transpiler == 'typescript' ? 'ts' : self.transpiler]
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|| (self.pluginLoader || self)['import'](self.transpiler))
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.then(function(transpiler) {
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if (transpiler.__useDefault)
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transpiler = transpiler['default'];
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var transpileFunction;
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if (transpiler.Compiler)
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transpileFunction = traceurTranspile;
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else if (transpiler.createLanguageService)
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transpileFunction = typescriptTranspile;
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else
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transpileFunction = babelTranspile;
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// note __moduleName will be part of the transformer meta in future when we have the spec for this
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return '(function(__moduleName){' + transpileFunction.call(self, load, transpiler) + '\n})("' + load.name + '");\n//# sourceURL=' + load.address + '!transpiled';
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});
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};
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function traceurTranspile(load, traceur) {
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var options = this.traceurOptions || {};
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options.modules = 'instantiate';
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options.script = false;
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if (options.sourceMaps === undefined)
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options.sourceMaps = 'inline';
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options.filename = load.address;
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options.inputSourceMap = load.metadata.sourceMap;
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options.moduleName = false;
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var compiler = new traceur.Compiler(options);
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return doTraceurCompile(load.source, compiler, options.filename);
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}
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function doTraceurCompile(source, compiler, filename) {
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try {
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return compiler.compile(source, filename);
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}
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catch(e) {
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// on older versions of traceur (<0.9.3), an array of errors is thrown
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// rather than a single error.
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if (e.length) {
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throw e[0];
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}
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throw e;
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}
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}
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function babelTranspile(load, babel) {
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var options = this.babelOptions || {};
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options.modules = 'system';
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if (options.sourceMap === undefined)
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options.sourceMap = 'inline';
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options.inputSourceMap = load.metadata.sourceMap;
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options.filename = load.address;
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options.code = true;
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options.ast = false;
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return babel.transform(load.source, options).code;
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}
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function typescriptTranspile(load, ts) {
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var options = this.typescriptOptions || {};
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options.target = options.target || ts.ScriptTarget.ES5;
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if (options.sourceMap === undefined)
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options.sourceMap = true;
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if (options.sourceMap && options.inlineSourceMap !== false)
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options.inlineSourceMap = true;
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options.module = ts.ModuleKind.System;
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return ts.transpile(load.source, options, load.address);
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}
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return transpile;
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})();
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