112 lines
3.5 KiB
JavaScript
112 lines
3.5 KiB
JavaScript
var traverse = require("./traverse");
|
|
var assert = require("assert");
|
|
var path = require("path");
|
|
var util = require("./util");
|
|
var _ = require("lodash");
|
|
|
|
var transform = module.exports = function (code, opts) {
|
|
opts = opts || {};
|
|
code = (code || "") + "";
|
|
|
|
_.defaults(opts, {
|
|
blacklist: [],
|
|
whitelist: [],
|
|
sourceMap: false,
|
|
filename: "unknown",
|
|
format: {}
|
|
});
|
|
|
|
return util.parse(opts.filename, code, function (tree) {
|
|
return transform._run(code, tree, opts);
|
|
});
|
|
};
|
|
|
|
transform._run = function (code, tree, opts) {
|
|
traverse.replace(tree, function (node) {
|
|
if (node.type === "EmptyStatement") {
|
|
return traverse.Delete;
|
|
}
|
|
});
|
|
|
|
var generateUid = util.buildUidGenerator();
|
|
|
|
_.each(transform.transformers, function (transformer, name) {
|
|
var blacklist = opts.blacklist;
|
|
if (blacklist.length && _.contains(blacklist, name)) return;
|
|
|
|
var whitelist = opts.whitelist;
|
|
if (whitelist.length && !_.contains(whitelist, name)) return;
|
|
|
|
transform._runTransformer(transformer, tree, opts, generateUid);
|
|
});
|
|
|
|
var genOpts = {
|
|
file: path.basename(opts.filename),
|
|
format: opts.format
|
|
};
|
|
|
|
if (opts.sourceMap) {
|
|
genOpts.sourceMap = genOpts.file;
|
|
genOpts.sourceContent = code;
|
|
genOpts.sourceMapWithCode = true;
|
|
}
|
|
|
|
var result = util.generate(tree, genOpts);
|
|
|
|
if (opts.sourceMap) {
|
|
if (opts.sourceMap === "inline") {
|
|
result.code += "\n" + util.sourceMapToComment(result.map);
|
|
}
|
|
|
|
return result;
|
|
} else {
|
|
return { code: result, map: null };
|
|
}
|
|
};
|
|
|
|
transform._runTransformer = function (transformer, tree, opts, generateUid) {
|
|
if (transformer.Program) transformer.Program(tree, opts);
|
|
|
|
traverse.replace(tree, function (node, parent) {
|
|
var fn = transformer[node.type] || transformer.all;
|
|
if (!fn) return;
|
|
|
|
return fn(node, parent, opts, generateUid);
|
|
});
|
|
};
|
|
|
|
transform.test = function (actual, expect, opts) {
|
|
opts = opts || {};
|
|
_.defaults(opts, { filename: "test" });
|
|
|
|
var actualCode = actual.code.trim();
|
|
var transformedCode = transform(actualCode, opts).code;
|
|
var actualAst = util.parse(actual.filename, transformedCode);
|
|
actualCode = util.generate(actualAst);
|
|
|
|
var expectCode = expect.code.trim();
|
|
var expectAst = util.parse(expect.filename, expectCode);
|
|
expectCode = util.generate(expectAst);
|
|
|
|
assert.equal(actualCode, expectCode);
|
|
};
|
|
|
|
transform.transformers = {
|
|
computedPropertyNames: require("./transformers/computed-property-names"),
|
|
propertyNameShorthand: require("./transformers/property-name-shorthand"),
|
|
constants: require("./transformers/constants"),
|
|
arrayComprehension: require("./transformers/array-comprehension"),
|
|
arrowFunctions: require("./transformers/arrow-functions"),
|
|
classes: require("./transformers/classes"),
|
|
spread: require("./transformers/spread"),
|
|
templateLiterals: require("./transformers/template-literals"),
|
|
propertyMethodAssignment: require("./transformers/property-method-assignment"),
|
|
defaultParameters: require("./transformers/default-parameters"),
|
|
destructuring: require("./transformers/destructuring"),
|
|
generators: require("./transformers/generators"),
|
|
blockBinding: require("./transformers/block-binding"),
|
|
modules: require("./transformers/modules"),
|
|
restParameters: require("./transformers/rest-parameters"),
|
|
forOf: require("./transformers/for-of")
|
|
};
|