2015-08-11 19:46:13 +03:00
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/**
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*
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* Material Design Lite
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* Copyright 2015 Google Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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*
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*/
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'use strict';
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var through = require('through2');
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var escodegen = require('escodegen');
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var acorn = require('acorn');
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function uniffe(contents) {
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var comments = [];
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var tokens = [];
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var ast = acorn.parse(contents, {
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ranges: true,
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onComment: comments,
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onToken: tokens
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});
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escodegen.attachComments(ast, comments, tokens);
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2015-09-08 19:26:09 +03:00
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if (ast.body[0].expression === undefined ||
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ast.body[0].expression.callee === undefined) {
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2015-08-11 19:46:13 +03:00
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return contents;
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}
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var rootProgram = ast.body[0].expression.callee.body;
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rootProgram.type = 'Program';
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// drop use strict
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rootProgram.body = rootProgram.body.slice(1);
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// attach all leading comments from outside iffe
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rootProgram.leadingComments = ast.body[0].leadingComments;
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return escodegen.generate(rootProgram, {comment: true});
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}
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module.exports = function() {
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return through.obj(function(file, enc, cb) {
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if (file.isBuffer()) {
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file.contents = new Buffer(uniffe(file.contents.toString(enc)), enc);
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}
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cb(null, file);
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});
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};
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