Error: Must use import to load ES Module for undici/lib/llhttp/llhttp.wasm

[jeromemacias]

Bug Description

Error when loading undici into jest unit tests

Logs

Tests run using:
NODE_OPTIONS=--experimental-vm-modules npx jest --run-in-band --verbose --ci

Error log:

/home/runner/work/my-project/my-project/node_modules/jest-runtime/build/index.js:841
      const error = new Error(
                    ^

Error: Must use import to load ES Module: /home/runner/work/my-project/my-project/node_modules/undici/lib/llhttp/llhttp.wasm
    at Runtime.requireModule (/home/runner/work/my-project/my-project/node_modules/jest-runtime/build/index.js:841:21)
    at Runtime.requireModuleOrMock (/home/runner/work/my-project/my-project/node_modules/jest-runtime/build/index.js:1039:21)
    at lazyllhttp (/home/runner/work/my-project/my-project/node_modules/undici/lib/client.js:362:55)
    at Object.<anonymous> (/home/runner/work/my-project/my-project/node_modules/undici/lib/client.js:424:21)
    at Runtime._execModule (/home/runner/work/my-project/my-project/node_modules/jest-runtime/build/index.js:1429:24)
    at Runtime._loadModule (/home/runner/work/my-project/my-project/node_modules/jest-runtime/build/index.js:1013:12)
    at Runtime.requireModule (/home/runner/work/my-project/my-project/node_modules/jest-runtime/build/index.js:873:12)
    at Runtime.requireModuleOrMock (/home/runner/work/my-project/my-project/node_modules/jest-runtime/build/index.js:1039:21)
    at Object.<anonymous> (/home/runner/work/my-project/my-project/node_modules/undici/index.js:3:16)
    at Runtime._execModule (/home/runner/work/my-project/my-project/node_modules/jest-runtime/build/index.js:1429:24)
    at Runtime._loadModule (/home/runner/work/my-project/my-project/node_modules/jest-runtime/build/index.js:1013:12)
    at Runtime.requireModule (/home/runner/work/my-project/my-project/node_modules/jest-runtime/build/index.js:873:12)
    at Runtime.requireModuleOrMock (/home/runner/work/my-project/my-project/node_modules/jest-runtime/build/index.js:1039:21)
    at Runtime.loadCjsAsEsm (/home/runner/work/my-project/my-project/node_modules/jest-runtime/build/index.js:717:22)
    at Runtime.resolveModule (/home/runner/work/my-project/my-project/node_modules/jest-runtime/build/index.js:675:17)
    at ModuleWrap.<anonymous> (node:internal/vm/module:306:24) {
  code: 'ERR_REQUIRE_ESM'

Environment

NodeJS: 18.15.0
Jest: 29.5.0
ts-jest: 29.0.5
ts-node: 10.9.1
typescript: 4.9.5
undici: 5.21.2

Jest config:

export default {
  preset: 'ts-jest/presets/default-esm',
  moduleNameMapper: {
    '^(\\.{1,2}/.*)\\.js$': '$1'
  },
  extensionsToTreatAsEsm: ['.ts'],
  testEnvironment: 'node',
  roots: ['<rootDir>/src/']
}

TS config:

{
  "compilerOptions": {
    "lib": ["ESNext", "DOM"],
    "target": "ES2022",
    "strict": false,
    "module": "NodeNext",
    "moduleResolution": "nodenext",
    "esModuleInterop": true,
    "forceConsistentCasingInFileNames": true,
    "sourceMap": true,
    "declaration": true,
    "declarationMap": true, // enables importers to jump to source
    "removeComments": true
  },
  "include": ["src/**/*", "test/*"]
}

Additional context

Error appears on undici v5.16.0
Possibly comes from : d0a99c2

[KhafraDev]

Does this fix your issues?

#1878 (comment)