bmeurer

const originalError = console.error;
console.error = function(...args) {
  originalError(...args, "foo");
}
//# sourceMappingURL=data:...

bmeurer

import MagicString from 'magic-string';
import open from 'open';

function magic_string_replace_all(src, search, replace) {
  let idx = src.original.indexOf(search);
  if (idx == -1) throw new Error('search not found in src');
  do {
    src.update(idx, idx + search.length, replace, {storeName: true});
  } while ((idx = src.original.indexOf(search, idx + 1)) != -1);
}

bmeurer

// Copyright (c) 2022 Benedikt Meurer. All rights reserved.
//
// Run this test with
//
//   d8 --enable-inspector standalone.js -- -1
//
// to measure with the inspector disabled, or with
//
//   d8 --enable-inspector standalone.js -- 0
//

bmeurer

// Copyright 2013-2019 Benedikt Meurer
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     <https://www.apache.org/licenses/LICENSE-2.0>
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,

bmeurer

// Copyright 2013-2019 Benedikt Meurer
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     <https://www.apache.org/licenses/LICENSE-2.0>
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,

bmeurer

--- dist/prerender_ORIG.js    2019-01-28 11:32:34.000000000 +0100
+++ dist/prerender.js    2019-01-28 11:33:58.000000000 +0100
@@ -88604,66 +88604,7 @@
   serialize: { value: function() {
     var s = '';
     for (var kid = this.firstChild; kid !== null; kid = kid.nextSibling) {
-      s += kid._serializeOne(this);
-    }
-    return s;
-  }},

bmeurer

// Microbenchmark to investigate https://twitter.com/DasSurma/status/927324384238473222

var isEvenNum = (num = 1) => num !== 0 && num % 2 === 0;
var sqrNum = num => num * num;

var N = 1000;
var arr = [];
for (n = 1; n <= 10000; ++n) arr.push(n);

function multiloops() {

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// Benchmark for the PR https://github.com/babel/babel/pull/6748

"use strict";

// Object with no enumerable properties in the prototype chain.
const a = {x:1, y:2, z:3};

// Object with enumerable properties in the prototype chain.
function B() { this.x = 1; this.y = 2; this.z = 3; }
B.prototype.foo = 4;

bmeurer

// Benchmark to measure loops running until OOB vs. loops that run
// to length. See
//
//  https://v8project.blogspot.de/2017/09/elements-kinds-in-v8.html#avoid-reading-beyond-length
//
// for background. While OOB access is now no longer almost 10x
// slower in V8, it's still an anti-pattern that should be avoided.

"use strict";

bmeurer

// Isolated test case for the discussion around rest parameters for Node's EventEmitter
// https://github.com/nodejs/node/pull/13155#issuecomment-334706721
if (typeof console === 'undefined') console = {log:print};

const N = 2e7;
const TESTS = [];

(function() {
  function emitNone(handler, isFn, self) {
    if (isFn)