ESM and CJS don't play well together

[mscharley]

Describe the bug.

As an example, if you're writing an ESM application but import a CJS library which exports classes which are decorated with DOT annotations then that CJS library will import the CJS version of the DOT annotations. This is completely compatible and mostly works fine, but the WeakMaps used to store metadata about annotated classes are module-local variables which at runtime are seperate modules in the ESM and CJS builds.

Steps to reproduce

import { createRequire } from 'module';
const require = createRequire(import.meta.url);

const dotCjs = require('../dot.cjs');
const dotEsm = await import('../dot.js');

@dotCjs.injectable()
class A {}

@dotEsm.injectable()
class B {}

const container = dotEsm.createContainer();
container.bind(A).toSelf();
container.bind(B).toSelf();
container.validate(); // Fails, can't find @injectable() annotation for A.

Expected behaviour

No response

DOT

1.4.8

TypeScript

5.2.2

Decorator type

Typescript Experimental

Node

18

Add any other context about the problem here.

No response