commonjs module functionality is broken when project externally defined ambient require function #11752

Reproduced on the latest master.

• install typings for node npm install @types/node
• create .js file with content

var fs = require("fs");
fs.

• open file in VSCode and request completions after .

Expected: should see the content of fs module
Actual: completion list contains only identifiers in current file

Everything works as expected if I use import statement import * as fs from "fs"; instead of require.

Issue was introduces with this change since node declares ambient function require