var a = require.resolve('buffer/').replace(process.cwd(), '$CWD'); var b = require('resolve').sync('buffer/', { preserveSymlinks: true }).replace(process.cwd(), '$CWD'); var c = require('resolve').sync('buffer/', { preserveSymlinks: false }).replace(process.cwd(), '$CWD');

console.log(a, ': require.resolve, preserveSymlinks ' + (process.execArgv.indexOf('preserve-symlinks') > -1 ? 'true' : 'false')); console.log(b, ': preserveSymlinks true'); console.log(c, ': preserveSymlinks false');

if (a !== b && a !== c) {

throw 'sync: no match';

} console.log('sync: success! a matched either b or cn');