npx mocha test/integration/esm.spec.js


  esm
    ✔ should pass a passing esm test that uses esm (184ms)
    ✔ should fail a failing esm test that uses esm (177ms)
    ✔ should show file location when there is a syntax error in the test (162ms)
    ✔ should recognize esm files ending with .js due to package.json type flag (178ms)
    ✔ should enable requiring/loading a cjs module with "dir" as filename (173ms)
    ✔ should throw an ERR_MODULE_NOT_FOUND and not ERR_REQUIRE_ESM if file imports a non-existing module (228ms)
    1) should throw an ERR_MODULE_NOT_FOUND and not ERR_REQUIRE_ESM if file imports a non-existing module with a loader


  6 passing (1s)
  1 failing

  1) esm
       should throw an ERR_MODULE_NOT_FOUND and not ERR_REQUIRE_ESM if file imports a non-existing module with a loader:
     UnexpectedError: 
expected '(node:3315) ExperimentalWarning: `--experimental-loader` may be removed in the future; instead use `register()`:\n--import \'data:text/javascript,import { register } from "node:module"; import { pathToFileURL } from "node:url"; register("./test/integration/fixtures/esm/loader-with-module-not-found/loader-that-recognizes-ts.mjs", pathToFileURL("./"));\'\n(Use `node --trace-warnings ...` to show where the warning was created)\n\nnode:internal/modules/run_main:123\n    triggerUncaughtException(\n    ^\nTypeError [ERR_INVALID_URL_SCHEME]: The URL must be of scheme file\n    at fileURLToPath (node:internal/url:1612:11)\n    at resolve (file:///Users/josh/repos/mocha/test/integration/fixtures/esm/loader-with-module-not-found/loader-that-recognizes-ts.mjs:15:5)\n    at nextResolve (node:internal/modules/esm/hooks:748:28)\n    at Hooks.resolve (node:internal/modules/esm/hooks:240:30)\n    at MessagePort.handleMessage (node:internal/modules/esm/worker:199:24)\n    at [nodejs.internal.kHybridDispatch] (node:internal/event_target:845:20)\n    at MessagePort.<anonymous> (node:internal/per_context/messageport:23:28) {\n  code: \'ERR_INVALID_URL_SCHEME\'\n}\n\nNode.js v22.21.1\n'
to contain 'ERR_MODULE_NOT_FOUND'

(node:3315) ExperimentalWarning: `--experimental-loader` may be removed in the future; instead use `register()`:
--import 'data:text/javascript,import { register } from "node:module"; import { pathToFileURL } from "node:url"; register("./test/integration/fixtures/esm/loader-with-module-not-found/loader-that-recognizes-ts.mjs", pathToFileURL("./"));'
(Use `node --trace-warnings ...` to show where the warning was created)

node:internal/modules/run_main:123
    triggerUncaughtException(
    ^
TypeError [ERR_INVALID_URL_SCHEME]: The URL must be of scheme file
    at fileURLToPath (node:internal/url:1612:11)
    at resolve (file:///Users/josh/repos/mocha/test/integration/fixtures/esm/loader-with-module-not-found/loader-that-recognizes-ts.mjs:15:5)
    at nextResolve (node:internal/modules/esm/hooks:748:28)
    at Hooks.resolve (node:internal/modules/esm/hooks:240:30)
    at MessagePort.handleMessage (node:internal/modules/esm/worker:199:24)
    at [nodejs.internal.kHybridDispatch] (node:internal/event_target:845:20)
    at MessagePort.<anonymous> (node:internal/per_context/messageport:23:28) {
  code: 'ERR_INVALID_URL_SCHEME'
}

Node.js v22.21.1


      at Context.<anonymous> (test/integration/esm.spec.js:100:5)
      at process.processTicksAndRejections (node:internal/process/task_queues:105:5)
      set UNEXPECTED_FULL_TRACE=true to see the full stack trace