The Tor Browser / file comparison
comparison: toolkit/mozapps/installer/js-compare-ast.js
toolkit/mozapps/installer/js-compare-ast.js
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| -1:000000000000 | 0:158017ecb0c2 |
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| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 /** | |
| 6 * This script compares the AST of two JavaScript files passed as arguments. | |
| 7 * The script exits with a 0 status code if both files parse properly and the | |
| 8 * ASTs of both files are identical modulo location differences. The script | |
| 9 * exits with status code 1 if any of these conditions don't hold. | |
| 10 * | |
| 11 * This script is used as part of packaging to verify minified JavaScript files | |
| 12 * are identical to their original files. | |
| 13 */ | |
| 14 | |
| 15 "use strict"; | |
| 16 | |
| 17 function ast(filename) { | |
| 18 return JSON.stringify(Reflect.parse(snarf(filename), {loc: 0})); | |
| 19 } | |
| 20 | |
| 21 if (scriptArgs.length !== 2) { | |
| 22 throw "usage: js js-compare-ast.js FILE1.js FILE2.js"; | |
| 23 } | |
| 24 | |
| 25 let ast0 = ast(scriptArgs[0]); | |
| 26 let ast1 = ast(scriptArgs[1]); | |
| 27 | |
| 28 quit(ast0 == ast1 ? 0 : 1); |
