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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
// We've experienced a regression where the module loader stats a bunch of
// directories on require() even if it's been called before. The require()
// should caching the request.
require('../common');
const fs = require('fs');
const assert = require('assert');
const { fixturesDir } = require('../common/fixtures');
let counter = 0;
// Switch out the two stat implementations so that they increase a counter
// each time they are called.
const _statSync = fs.statSync;
const _stat = fs.stat;
fs.statSync = function() {
counter++;
return _statSync.apply(this, arguments);
};
fs.stat = function() {
counter++;
return _stat.apply(this, arguments);
};
// Load the module 'a' and 'http' once. It should become cached.
require(`${fixturesDir}/a`);
require('../fixtures/a.js');
require('./../fixtures/a.js');
require('http');
console.log(`counterBefore = ${counter}`);
const counterBefore = counter;
// Now load the module a bunch of times with equivalent paths.
// stat should not be called.
for (let i = 0; i < 100; i++) {
require(`${fixturesDir}/a`);
require('../fixtures/a.js');
require('./../fixtures/a.js');
}
// Do the same with a built-in module
for (let i = 0; i < 100; i++) {
require('http');
}
console.log(`counterAfter = ${counter}`);
const counterAfter = counter;
assert.strictEqual(counterBefore, counterAfter);
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