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// Testing UglifyJS <-> SpiderMonkey AST conversion
"use strict";
var acorn = require("acorn");
var ufuzz = require("./ufuzz");
var UglifyJS = require("..");
function beautify(ast) {
var beautified = UglifyJS.minify(ast, {
compress: false,
mangle: false,
output: {
beautify: true,
braces: true,
},
});
if (beautified.error) return beautified;
return UglifyJS.minify(beautified.code, {
compress: false,
mangle: false,
output: {
ast: true,
},
});
}
function validate(ast) {
try {
ast.walk(new UglifyJS.TreeWalker(function(node) {
node.validate();
}));
} catch (e) {
return { error: e };
}
return UglifyJS.minify(ast, {
compress: false,
mangle: false,
output: {
ast: true,
},
validate: true,
});
}
function patch_import(code) {
return code.replace(/\bimport\s*\{\s*\}\s*from\s*(['"])/g, "import$1")
.replace(/\b(import\b.*?)\s*,\s*\{\s*\}\s*(from\s*['"])/g, "$1 $2");
}
function equals(input, transformed) {
if (input.code === transformed.code) return true;
return patch_import(input.code) === patch_import(transformed.code);
}
function test(input, to_moz, description, skip_on_error, beautified) {
try {
var ast = UglifyJS.AST_Node.from_mozilla_ast(to_moz(input));
} catch (e) {
if (skip_on_error) return true;
console.log("//=============================================================");
console.log("//", description, "failed... round", round);
console.log(e);
console.log("// original code");
if (beautified === true) console.log("// (beautified)");
console.log(input.code);
return false;
}
var transformed = validate(ast);
if (transformed.error || !equals(input, transformed)) {
if (!beautified) {
beautified = beautify(input.ast);
if (!beautified.error) {
beautified.raw = beautified.code;
if (!test(beautified, to_moz, description, skip_on_error, true)) return false;
}
}
console.log("//=============================================================");
console.log("// !!!!!! Failed... round", round);
console.log("// original code");
if (beautified.error) {
console.log("// !!! beautify failed !!!");
console.log(beautified.error.stack);
} else if (beautified === true) {
console.log("// (beautified)");
}
console.log(input.raw);
console.log();
console.log();
console.log("//-------------------------------------------------------------");
console.log("//", description);
if (transformed.error) {
console.log(transformed.error.stack);
} else {
beautified = beautify(transformed.ast);
if (beautified.error) {
console.log("// !!! beautify failed !!!");
console.log(beautified.error.stack);
console.log(transformed.code);
} else {
console.log("// (beautified)");
console.log(beautified.code);
}
}
console.log("!!!!!! Failed... round", round);
return false;
}
return true;
}
var num_iterations = ufuzz.num_iterations;
var minify_options = require("./ufuzz/options.json").map(JSON.stringify);
minify_options.unshift(null);
for (var round = 1; round <= num_iterations; round++) {
process.stdout.write(round + " of " + num_iterations + "\r");
var code = ufuzz.createTopLevelCode();
minify_options.forEach(function(options) {
var ok = true;
var input = UglifyJS.minify(options ? UglifyJS.minify(code, JSON.parse(options)).code : code, {
compress: false,
mangle: false,
output: {
ast: true,
},
});
input.raw = options ? input.code : code;
if (input.error) {
ok = false;
console.log("//=============================================================");
console.log("// minify() failed... round", round);
console.log(input.error);
console.log("// original code");
console.log(code);
}
if (ok) ok = test(input, function(input) {
return input.ast.to_mozilla_ast();
}, "AST_Node.to_mozilla_ast()");
if (ok) ok = test(input, function(input) {
return acorn.parse(input.raw, {
ecmaVersion: "latest",
locations: true,
sourceType: "module",
});
}, "acorn.parse()", !ufuzz.verbose);
if (!ok) process.exit(1);
});
}
console.log();
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