[Bug] Not working with ESM modules

[bhvngt]

I am trying this out with my esm module with following configuration

tsconfig.tsnode.json

{
	"include": ["src/**/*", "tests/**/*"],
	"exclude": ["node_modules/*", "coverage/*"],
	"ts-node": {
		"transpileOnly": true,
		"require": ["typescript-transform-paths/register"]
	},
	"compilerOptions": {
		"target": "esnext",
		"module": "esnext",
		"lib": ["dom", "esnext"],
		"moduleResolution": "node",
		"strict": true,
		"forceConsistentCasingInFileNames": true,
		"importsNotUsedAsValues": "error",
		"incremental": true,
		"types": ["node", "jest"],
                "baseUrl": ".",
		"paths": {
			"$src/*": ["./src/*"]
		},
		"isolatedModules": false,
		"plugins": [
			{ "transform": "typescript-transform-paths" },
			{ "transform": "typescript-transform-paths", "afterDeclarations": true }
		]
	}
}

package.json

{
...
"type": "module"
...
}

b.ts

export const b: string = "Hello World!"

a.ts

import {b} from "$src/b"

console.log(b);

TS_NODE_PROJECT=tsconfig.tsnode.json node --loader ts-node/esm --es-module-specifier-resolution=node src/a.ts throws

/projects/common/temp/node_modules/.pnpm/ts-node@10.2.1_c780171742f6906a053a603dfa210a4e/node_modules/ts-node/dist-raw/node-esm-resolve-implementation.js:774
  throw new ERR_MODULE_NOT_FOUND(packageName, fileURLToPath(base));
        ^
CustomError: Cannot find package '$src' imported from /projects/libs/domain/src/a.ts
    at packageResolve (/projects/common/temp/node_modules/.pnpm/ts-node@10.2.1_c780171742f6906a053a603dfa210a4e/node_modules/ts-node/dist-raw/node-esm-resolve-implementation.js:774:9)
    at moduleResolve (/projects/common/temp/node_modules/.pnpm/ts-node@10.2.1_c780171742f6906a053a603dfa210a4e/node_modules/ts-node/dist-raw/node-esm-resolve-implementation.js:815:18)
    at Object.defaultResolve (/projects/common/temp/node_modules/.pnpm/ts-node@10.2.1_c780171742f6906a053a603dfa210a4e/node_modules/ts-node/dist-raw/node-esm-resolve-implementation.js:929:11)
    at /projects/common/temp/node_modules/.pnpm/ts-node@10.2.1_c780171742f6906a053a603dfa210a4e/node_modules/ts-node/src/esm.ts:68:38
    at Generator.next (<anonymous>)
    at /projects/common/temp/node_modules/.pnpm/ts-node@10.2.1_c780171742f6906a053a603dfa210a4e/node_modules/ts-node/dist/esm.js:8:71
    at new Promise (<anonymous>)
    at __awaiter (/projects/common/temp/node_modules/.pnpm/ts-node@10.2.1_c780171742f6906a053a603dfa210a4e/node_modules/ts-node/dist/esm.js:4:12)
    at resolve (/projects/common/temp/node_modules/.pnpm/ts-node@10.2.1_c780171742f6906a053a603dfa210a4e/node_modules/ts-node/dist/esm.js:32:16)
    at Loader.resolve (node:internal/modules/esm/loader:89:40)

if I change import in a.ts to relative path import {b} from "./b", it works with the same command.

When used with commonjs works by changing module to commonjs under tsconfig and removing "type": "module" under package.json with cli TS_NODE_PROJECT=tsconfig.tsnode.json ts-node src/a.ts

[nonara]

Thanks for the report! I had a look at the ts-node source, and I think I know what's going on. Will be looking into it.

Update: I have a fix ready, but it requires an upstream PR on ts-node. I've submitted one, so we'll wait and see what happens there.

[bhvngt]

Thanks @nonara. That was really quick. Appreciate your help.

[bhvngt]

Since TypeStrong/ts-node#1439 has been merged, is there any other blocker to this issue?

Appreciate your effort and contribution @nonara.

[nonara]

No blocker, per se, but things have been incredibly busy. This is rolled into the upcoming new major release, which has a lot of changes. I'm working on wrapping that up and hope to have it out soon!

[nonara]

Feature is finished and working! You can have a look here:

• V4 #145
• b62dd49

Shouldn't be too long before we have a release ready.

[bhvngt]

Thanks @nonara. Will check this out.

[xpuu]

Hi @nonara, thanks for this useful lib. I'm looking forward to v4 release. I tried to test it in the meantime with the v4 branch, but without much success. Probably just me being tired and stupid. @bhvngt Did that work for you?