Register does not transpile node_module dependencies

[albertogasparin]

I have a 3rd party dependency that internally relies on https://github.com/google/zx . Now zx does not publish with cjs, only ESM, and when I try to run my-script.ts that includes the dependency via:

 node --loader @swc-node/register/esm my-script.ts

I get an error:

Error [ERR_REQUIRE_ESM]: require() of ES Module node_modules/zx/build/index.js from node_modules/3rd-party/dist/cjs/whatever.js not supported.
Instead change the require of index.js in node_modules/3rd-party/dist/cjs/whatever.js to a dynamic import() which is available in all CommonJS modules.

Obviously, cannot change the 3rd party dependency import statements. Also this was marked as "resolved" in #634 but seems like it works only on 1st level imports?

Other tools handle this properly (eg node -r esbuild-register) but I'd love to stick with SWC 🙏

[kdy1]

Can you provide a minimal reproduction?

[albertogasparin]

Install @ling-jun/cli. Write this index.ts:

import {$} from 'zx';
import foo from '@ling-jun/cli';

console.log($);
console.log(foo);

Then run:

 node --loader @swc-node/register/esm index.ts

The first import will work, the second one will fails as swc will pick the main field which contains cjs requires instead of esm.

[yeliex]

#767 should resolved this

[albertogasparin]

I tried v1.9.1 which should include this fix but it still fails 🤔
I'll try and see if I can provide more information

[maxpatiiuk]

I am having the same issue. In my case I am distributing an intranet package as .ts rather than .js and wish to transpile it on the fly, however swc-node ignores files in node_modules.

In particular, it is happening here:

swc-node/packages/register/esm.mts

Lines 271 to 275 in 82aa094

	if (url.includes('/node_modules/')) {
	debug('skip load: node_modules', url)
	return nextLoad(url, context)
	}

While I understand that the basic use of swc-node/register doesn't require transpiling in node_modules, could you please modify the above condition to not exclude node_modules if url ends with .ts?

alternatively, please expose some sort of flag/ env variables/option to transpile .ts files in node_modules too

thanks