119 lines
4.1 KiB
JavaScript
119 lines
4.1 KiB
JavaScript
module.exports = transform;
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var Transformer = require("./transformer");
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var sourceMap = require("source-map");
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var recast = require("acorn-recast");
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var File = require("./file");
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var util = require("./util");
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var _ = require("lodash");
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function transform(code, opts) {
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opts = opts || {};
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code = (code || "") + "";
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var file = new File(opts);
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return file.parse(code);
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}
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transform.test = function (task, assert) {
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var actual = task.actual;
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var expect = task.expect;
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var opts = task.options;
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var exec = task.exec;
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var getOpts = function (filename) {
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return _.merge({ filename: filename }, opts);
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};
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var execCode = exec.code.trim();
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var result;
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if (execCode) {
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result = transform(execCode, getOpts(exec.filename));
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execCode = result.code;
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require("./polyfill");
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var fn = new Function("assert", execCode);
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fn(assert);
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} else {
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var actualCode = actual.code.trim();
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var expectCode = expect.code.trim();
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var printOpts = { tabWidth: 2 };
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result = transform(actualCode, getOpts(actual.filename));
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actualCode = recast.prettyPrint(result.ast, printOpts).code;
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var expectAst = util.parse(expect, expectCode);
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var expectResult = recast.prettyPrint(expectAst, printOpts);
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expectCode = expectResult.code;
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assert.equal(actualCode, expectCode);
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}
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if (task.sourceMap) {
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assert.deepEqual(task.sourceMap, result.map);
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}
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if (task.sourceMappings) {
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var consumer = new sourceMap.SourceMapConsumer(result.map);
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_.each(task.sourceMappings, function (mapping, i) {
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var generated = mapping.generated;
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var original = mapping.original;
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var pos = consumer.originalPositionFor(generated);
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var msg = "source mapping " + i + " - generated: " + generated.line + ":" + generated.column;
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assert.equal(pos.line + ":" + pos.column, original.line + ":" + original.column, msg);
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});
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}
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};
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transform._ensureTransformerNames = function (type, keys) {
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_.each(keys, function (key) {
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if (key[0] === "_" || !_.has(transform.transformers, key)) {
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throw new ReferenceError("unknown transformer " + key + " specified in " + type);
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}
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});
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};
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transform.transformers = {
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modules: require("./transformers/modules"),
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computedPropertyNames: require("./transformers/computed-property-names"),
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propertyNameShorthand: require("./transformers/property-name-shorthand"),
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constants: require("./transformers/constants"),
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arrayComprehension: require("./transformers/array-comprehension"),
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arrowFunctions: require("./transformers/arrow-functions"),
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classes: require("./transformers/classes"),
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spread: require("./transformers/spread"),
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templateLiterals: require("./transformers/template-literals"),
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propertyMethodAssignment: require("./transformers/property-method-assignment"),
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defaultParameters: require("./transformers/default-parameters"),
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letScoping: require("./transformers/let-scoping"),
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restParameters: require("./transformers/rest-parameters"),
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destructuring: require("./transformers/destructuring"),
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forOf: require("./transformers/for-of"),
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unicodeRegex: require("./transformers/unicode-regex"),
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generators: require("./transformers/generators"),
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react: require("./transformers/react"),
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jsx: require("./transformers/jsx"),
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_aliasFunctions: require("./transformers/_alias-functions"),
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_blockHoist: require("./transformers/_block-hoist"),
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_declarations: require("./transformers/_declarations"),
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_moduleFormatter: require("./transformers/_module-formatter"),
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useStrict: require("./transformers/use-strict")
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};
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transform.moduleFormatters = {
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common: require("./modules/common"),
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amd: require("./modules/amd"),
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umd: require("./modules/umd")
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};
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_.each(transform.transformers, function (transformer, key) {
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transform.transformers[key] = new Transformer(key, transformer);
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});
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