std/node: add CommonJS require

[kevinkassimo]

Basically from https://github.com/nodejs/node/blob/master/lib/internal/modules/cjs/loader.js

import { makeRequire } from "https://deno.land/std/node/require.ts";

const selfPath = window.unescape(import.meta.url.substring(7));
// Our TS compiler would try to resolve if function named "require"...
// which is BAD since this triggers
// Thus suffixing it with _ to fix this...
const require_ = makeRequire(selfPath);

const result = require_("./node/tests/cjs/cjs_a.js");
assert("helloA" in result);
// Nested require
assert("helloB" in result);
// `module.exports` is not object
assert("C" in result);
// From node_modules
assert("leftPad" in result);

Seems to also work with node_modules.

NOTICE this requires Deno.core.evalContext

This would likely be a great starting point for compat, since this requires only the entry point to explicitly create require from makeRequire. Also we could possibly inject other std/node polyfills in the require resolution steps as builtin modules, such that polyfills would work seamlessly.

ref #2644

[ry]

Hello old friend

[ry]

Very nice

[ry]

LGTM - very nice