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// Flags: --preserve-symlinks
'use strict';
// Refs: https://github.com/nodejs/node/pull/5950
// This test verifies that symlinked modules are able to find their peer
// dependencies when using the --preserve-symlinks command line flag.
// This test passes in v6.2+ with --preserve-symlinks on and in v6.0/v6.1.
// This test will fail in Node.js v4 and v5 and should not be backported.
const common = require('../common');
const fs = require('fs');
const path = require('path');
const tmpdir = require('../common/tmpdir');
tmpdir.refresh();
const tmpDir = tmpdir.path;
// Creates the following structure
// {tmpDir}
// ├── app
// │ ├── index.js
// │ └── node_modules
// │ ├── moduleA -> {tmpDir}/moduleA
// │ └── moduleB
// │ ├── index.js
// │ └── package.json
// └── moduleA
// ├── index.js
// └── package.json
const moduleA = path.join(tmpDir, 'moduleA');
const app = path.join(tmpDir, 'app');
const moduleB = path.join(app, 'node_modules', 'moduleB');
const moduleA_link = path.join(app, 'node_modules', 'moduleA');
fs.mkdirSync(moduleA);
fs.mkdirSync(app);
fs.mkdirSync(path.join(app, 'node_modules'));
fs.mkdirSync(moduleB);
// Attempt to make the symlink. If this fails due to lack of sufficient
// permissions, the test will bail out and be skipped.
try {
fs.symlinkSync(moduleA, moduleA_link, 'dir');
} catch (err) {
if (err.code !== 'EPERM') throw err;
common.skip('insufficient privileges for symlinks');
}
fs.writeFileSync(path.join(moduleA, 'package.json'),
JSON.stringify({ name: 'moduleA', main: 'index.js' }), 'utf8');
fs.writeFileSync(path.join(moduleA, 'index.js'),
'module.exports = require(\'moduleB\');', 'utf8');
fs.writeFileSync(path.join(app, 'index.js'),
'\'use strict\'; require(\'moduleA\');', 'utf8');
fs.writeFileSync(path.join(moduleB, 'package.json'),
JSON.stringify({ name: 'moduleB', main: 'index.js' }), 'utf8');
fs.writeFileSync(path.join(moduleB, 'index.js'),
'module.exports = 1;', 'utf8');
require(path.join(app, 'index')); // Should not throw.
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