81 lines
1.6 KiB
Markdown
81 lines
1.6 KiB
Markdown
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---
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title: npm-start
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section: 1
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description: Start a package
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---
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### Synopsis
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```bash
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npm start [-- <args>]
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```
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### Description
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This runs a predefined command specified in the `"start"` property of
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a package's `"scripts"` object.
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If the `"scripts"` object does not define a `"start"` property, npm
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will run `node server.js`.
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Note that this is different from the default node behavior of running
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the file specified in a package's `"main"` attribute when evoking with
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`node .`
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As of [`npm@2.0.0`](https://blog.npmjs.org/post/98131109725/npm-2-0-0), you can
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use custom arguments when executing scripts. Refer to [`npm run-script`](/commands/npm-run-script) for more details.
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### Example
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```json
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{
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"scripts": {
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"start": "node foo.js"
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}
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}
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```
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```bash
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npm start
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> npm@x.x.x start
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> node foo.js
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(foo.js output would be here)
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```
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### Configuration
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#### `ignore-scripts`
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* Default: false
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* Type: Boolean
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If true, npm does not run scripts specified in package.json files.
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Note that commands explicitly intended to run a particular script, such as
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`npm start`, `npm stop`, `npm restart`, `npm test`, and `npm run-script`
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will still run their intended script if `ignore-scripts` is set, but they
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will *not* run any pre- or post-scripts.
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#### `script-shell`
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* Default: '/bin/sh' on POSIX systems, 'cmd.exe' on Windows
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* Type: null or String
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The shell to use for scripts run with the `npm exec`, `npm run` and `npm
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init <package-spec>` commands.
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### See Also
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* [npm run-script](/commands/npm-run-script)
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* [npm scripts](/using-npm/scripts)
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* [npm test](/commands/npm-test)
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* [npm restart](/commands/npm-restart)
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* [npm stop](/commands/npm-stop)
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