"Cannot find module" due to compileOptions.paths + ts-node/register

[JakobJingleheimer]

Versions:

• mocha: ^5.2.0
• ts-node: ^7.0.0
• tsconfig-paths ^3.4.2
• typescript: ^2.9.2

Error:

src/someFile.ts(1,24): error TS2307: Cannot find module '@lodash/camelCase'.

someFile.ts:

import _camelCase from '@lodash/camelCase';

// …

tsconfig.csj.json

{
  "compilerOptions": {
    "module": "commonjs",
    "outDir": "./lib/cjs",
    "paths": {
      "@lodash/*": [
        "node_modules/lodash/*",
        "node_modules/@types/lodash/*"
      ]
    }
  },
  "extends": "./tsconfig.json"
}

Commands:

"build:cjs": "tsc --project tsconfig.cjs.json",
// …
"test": "mocha -r ts-node/register -r tsconfig-paths/register -P tsconfig.cjs.json ./src/**/*.spec.ts"

The build using that same tsconfig file runs just fine. If I remove the @, the test command runs fine.

P.S. Sorry, I'm not sure whose issue this is (tsconfig-paths, ts-node).

Why I'm using the seemingly unnecessary `@lodash` at all

I'm using paths in generating different builds: cjs uses lodash, and es uses lodash-es, so I'm using the two different tsconfigs extending a main one for that.

[beejeon]

@jshado1
What is @lodash/camelCase ?
If it's your package (not npm published), Can you see if this is solved by #53

[JakobJingleheimer]

@todtod80 @lodash/camelCase is lodash/camelCase (which is definitely publish in npm) where @lodash is an alias defined in paths (see tsconfig.csj.json in my original post).

[jonaskello]

@jshado1 Would it be possible for you to setup a small reproduction of this issue in a separate github repo so I can take a closer look?

[JakobJingleheimer]

@jonaskello, is this small enough https://github.com/jshado1/ssr-storage ?

The file containing the @lodashs is src/cookie.ts, and the command to run the tests is npm run test (alias in package.json).