forked from mirrors/gecko-dev
584e273f90
# ignore-this-changeset Differential Revision: https://phabricator.services.mozilla.com/D36057 --HG-- extra : source : fc2db4029f7eeae4942b42ca0b23873f150012b2
31 lines
1,011 B
JavaScript
31 lines
1,011 B
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/**
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* This script compares the AST of two JavaScript files passed as arguments.
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* The script exits with a 0 status code if both files parse properly and the
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* ASTs of both files are identical modulo location differences. The script
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* exits with status code 1 if any of these conditions don't hold.
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*
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* This script is used as part of packaging to verify minified JavaScript files
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* are identical to their original files.
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*/
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// Available to the js shell.
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/* global snarf, scriptArgs, quit */
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"use strict";
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function ast(filename) {
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return JSON.stringify(Reflect.parse(snarf(filename), { loc: 0 }));
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}
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if (scriptArgs.length !== 2) {
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throw new Error("usage: js js-compare-ast.js FILE1.js FILE2.js");
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}
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var ast0 = ast(scriptArgs[0]);
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var ast1 = ast(scriptArgs[1]);
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quit(ast0 == ast1 ? 0 : 1);
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