replaceEsm breaks in node20 when other loaders are used

[jalfd]

Description

I'm trying to use testdouble in a Typescript project using ESM modules, and I get a TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension ".ts error when I try to use the replaceEsm function.

Issue

Assume a source file like the following, which tries to use replaceEsm before importing another typescript module, other.ts:

import * as td from "testdouble";

await td.replaceEsm("fs");
await import("./other.js");

If I run this under a typescript loader like tsx or ts-node/esm, I get an error like the following:

> [email protected] withtestdouble
> tsx withtestdouble.ts

node:internal/process/esm_loader:34
      internalBinding('errors').triggerUncaughtException(
                                ^
TypeError [ERR_UNKNOWN_FILE_EXTENSION]: Unknown file extension ".ts" for /Users/jalf/src/repro/other.ts
    at Object.getFileProtocolModuleFormat [as file:] (node:internal/modules/esm/get_format:160:9)
    at defaultGetFormat (node:internal/modules/esm/get_format:203:36)
    at defaultLoad (node:internal/modules/esm/load:143:22)
    at async nextLoad (node:internal/modules/esm/hooks:750:22)
    at async Z (file:///Users/jalf/src/repro/node_modules/tsx/dist/esm/index.mjs:5:1644)
    at async nextLoad (node:internal/modules/esm/hooks:750:22)
    at async load (file:///Users/jalf/src/repro/node_modules/quibble/lib/quibble.mjs:140:7)
    at async nextLoad (node:internal/modules/esm/hooks:750:22)
    at async Hooks.load (node:internal/modules/esm/hooks:383:20)
    at async MessagePort.handleMessage (node:internal/modules/esm/worker:199:18) {
  code: 'ERR_UNKNOWN_FILE_EXTENSION'
}

If remove the replaceEsm call, it works fine.

Apparently the tsx and quibble loaders clash, somehow.

Environment

• node -v output: v20.9.0
• npm -v (or yarn --version) output: 10.1.0
• npm ls testdouble version: [email protected]

Example Repo

https://github.com/jalfd/testdouble-repro

• run npm run withtestdouble to reproduce the problem.
• run npm run notestdouble to see that it works if the replaceEsm call is removed