78 lines
2.3 KiB
JavaScript
78 lines
2.3 KiB
JavaScript
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var UglifyJS = require("..");
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var assert = require("assert");
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var alphabet = "abcdefghijklmnop".split("");
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var perms = [];
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var linesOfCode = [];
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var startTime = new Date().getTime();
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console.log("--- Strict mode mangling tests");
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function permute(text) {
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perms.push(text);
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if(text.length < 4) {
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for(var i = 0; i < alphabet.length; i++) {
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permute(text + alphabet[i]);
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}
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}
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}
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permute("");
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var permuteTime = new Date().getTime() - startTime;
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console.log(" - Generated perms in " + permuteTime + "ms")
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console.log(" - Testing with " + perms.length + " identifiers");
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console.log(" - Mangling (this will take some time)...");
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function getCode(withStrictMode) {
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linesOfCode = " function outer() {\n";
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if (!!withStrictMode) {
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linesOfCode += " \"use strict\";\n";
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}
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for (var i in perms) {
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linesOfCode += " var _" + perms[i] + " = 1;\n"
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}
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linesOfCode += " function inner() {\n";
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for (var i in perms) {
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linesOfCode += " _" + perms[i] + "++;\n";
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}
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linesOfCode += " }\n";
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linesOfCode += " }\n";
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return linesOfCode;
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}
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module.exports = function () {
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var startManglingTime = new Date().getTime();
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var mangled_code = mangle(getCode(false));
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console.log(" - Found 'var let' at char: " + mangled_code.indexOf('var let'));
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console.log(" - Mangled code with no strict mode in " + Math.floor((new Date().getTime() - startManglingTime)/ 1000) + "s");
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assert(mangled_code.indexOf('var let') >= 0, "No 'var let' produced in the mangled code outside strict mode.");
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startManglingTime = new Date().getTime();
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var mangled_strict_code = mangle(getCode(true));
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console.log(" - This should be -1: " + mangled_strict_code.indexOf('var let'));
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console.log(" - Mangled code with strict mode in " + Math.floor((new Date().getTime() - startManglingTime)/ 1000) + "s");
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assert(mangled_strict_code.indexOf('var let') === -1, "A 'var let' statement was produced inside strict mode.");
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}
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function mangle(js) {
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var stream = UglifyJS.OutputStream();
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var parsed = UglifyJS.parse(js);
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parsed.figure_out_scope();
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parsed.mangle_names();
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parsed.print(stream);
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return stream.toString();
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}
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// Run standalone
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if (module.parent === null) {
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module.exports();
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}
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