How to use Typescript 'tsc' command as a devDependency?

Question

Seems like I'm having a problem with whats supposed to be very simple, I want to have typescript as a devDependency in my project and not global.

Ive installed it using npm i --save-dev typescript, but i cannot seem to be able to run tsc command to produce my javascript files.

My tsconfig.json:

{
  "compilerOptions": {
    "allowSyntheticDefaultImports": true,
    "declaration": false,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "lib": [
      "dom",
      "es2015"
    ],
    "module": "es2015",
    "moduleResolution": "node",
    "sourceMap": true,
    "target": "es5"
  },
  "include": [
    "src/**/*.ts"
  ],
  "exclude": [
    "node_modules"
  ],
  "atom": {
    "rewriteTsconfig": false
  }
}

I've tried following this question but couldn't find any solution there..

I understand simply running tsc in my terminal cannot possibly work as it is not installed globally and is not a known command, but what IS the way?

Any help would be highly appreciated, thanks in advance!

The npm run tsc approach that is described in one of the answers in your linked question should work. — Matthias247
– Matthias247, Commented Apr 21, 2017 at 13:20
@Matthias247 thanks for the quick reply, unfortunately adding this script does not work — Kesem David
– Kesem David, Commented Apr 21, 2017 at 13:41

Jaroslav Merta · Accepted Answer · 2023-01-07 11:51:16Z

3

standalone tsc command is available only for global installation. When you install it as a devDependency you have to use it with npx before the tsc command like so: npx tsc -v

The reason for this can be found here: https://www.typescriptlang.org/fr/download

It is also good to understand difference between npm and npx commands.

answered Jan 7, 2023 at 11:51

Jaroslav Merta

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Comments

Saravana · Accepted Answer · 2017-04-21 12:59:28Z

1

One way to do it is to define a script inside your package.json like so:

"scripts": {
    "start": "./node_modules/typescript/bin/tsc"
}

To run it: npm run start

Because you added typescript to your devDependencies, this should always be available.

edited Apr 21, 2017 at 12:59

Saravana

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answered Apr 21, 2017 at 12:53

Jeff Huijsmans

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2 Comments

Kesem David Over a year ago

Thanks for the quick reply, unfortunately, doing as you suggest does not solve the problem. i even tried running it manually from within the typescript package.. any idea why? npm just throws the most generic error saying exit status 1

Ugo Over a year ago

Your error is most likely coming from somewhere else and not from running TSC. Can you provide the detailed error output/trace?

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