Run npm script from another directory

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To run an npm script from another directory, use --prefix:

npm --prefix <path> run <command>

To run a yarn script from another directory, use --cwd:

yarn --cwd <path> <command>

If you have a package.json in the example directory:

{
  "scripts": {
    "start": "echo hello world"
  }
}

In the following directory:

.
├─ example
│  ├─ package.json
├─ package.json

1 directory, 1 file

Then to run script start from your working directory:

npm --prefix ./example run start

yarn --cwd ./example start

{
  "scripts": {
    "start": "npm --prefix ./example run start"
  }
}