'use strict'; const common = require('../common'); const assert = require('assert'); const fs = require('fs'); const f = __filename; fs.exists(f, common.mustCall(function(y) { assert.strictEqual(y, true); })); fs.exists(f + '-NO', common.mustCall(function(y) { assert.strictEqual(y, false); })); assert(fs.existsSync(f)); assert(!fs.existsSync(f + '-NO'));