ERR_REQUIRE_ESM from esm.mjs

[dyllan-to-you]

Hi!

Node 16.15.1
Typescript 4.7.4
ts-node 10.8.1

Whenever I try to run ts-node, utilizing ESM, I get the following error:

node:internal/modules/cjs/loader:979
    throw new ERR_REQUIRE_ESM(filename, true);
    ^

[Error [ERR_REQUIRE_ESM]: require() of ES Module C:\Users\DyllanTo\Desktop\Projects\analytics\algorithms\algorithms-js\node_modules\ts-node\esm.mjs not supported.
Instead change the require of C:\Users\DyllanTo\Desktop\Projects\analytics\algorithms\algorithms-js\node_modules\ts-node\esm.mjs to a dynamic import() which is available in all CommonJS modules.] {
  code: 'ERR_REQUIRE_ESM'
}

It looks like it's triggering on the following lines from esm.mjs

/** @type {import('./dist/esm')} */
const esm = require('./dist/esm');

I'm running the following command to call tsnode: node -r ts-node/esm src/runner.

My tsconfig:

{
  "ts-node": {
    "experimentalResolver": true
  },
  "compilerOptions": {
    "moduleResolution": "node",
    "module": "esnext",
    "target": "es6",
    "lib": ["ESNext", "DOM"],
    "allowJs": true,
    "outDir": "./dist",
    "sourceMap": true,
    "resolveJsonModule": true,
    "esModuleInterop": true,
    "strict": false,
    "strictNullChecks": false
  },
  "include": ["./src/**/*.ts", "./src/**/*.js"],
  "exclude": ["./src/**/*.test.ts", "./dist", ".eslintrc.cjs"]
}

I also have type: module in my package.json.

I've no idea what I'm doing wrong, or if it's actually a bug
Any help would be greatly appreciated!

[cspotcode]

node -r ts-node/esm is the mistake. Our docs explain correct usage: https://typestrong.org/ts-node/docs/imports

-r ts-node/esm tells node to require ts-node/esm which points to node_modules/ts-node/esm.mjs. esm.mjs is an ESM module and cannot be required, which is why you get that error. It was a fair guess to think dist/esm might be related, but in this case it is not.

Aside from that, ts-node/esm is a node ESM loader so must be used with --loader, not -r.