65 lines
2.5 KiB
Markdown
65 lines
2.5 KiB
Markdown
# process-on-spawn
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[![Travis CI][travis-image]][travis-url]
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[![Greenkeeper badge][gk-image]](https://greenkeeper.io/)
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[![NPM Version][npm-image]][npm-url]
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[![NPM Downloads][downloads-image]][downloads-url]
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[![MIT][license-image]](LICENSE)
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Execute callbacks when child processes are spawned.
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## Usage
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```js
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'use strict';
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const processOnSpawn = require('process-on-spawn');
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processOnSpawn.addListener(opts => {
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opts.env.CHILD_VARIABLE = 'value';
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});
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```
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### listener(opts)
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* `options` \<[Object]\>
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* `execPath` \<[string]\> The command to run.
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* `args` \<[string\[\]][string]\> Arguments of the child process.
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* `cwd` \<[string]\> Current working directory of the child process.
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* `detached` \<[boolean]\> The child will be prepared to run independently of its parent process.
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* `uid` \<[number]\> The user identity to be used by the child.
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* `gid` \<[number]\> The group identity to be used by the child.
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* `windowsVerbatimArguments` \<[boolean]\> No quoting or escaping of arguments will be done on Windows.
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* `windowsHide` \<[boolean]\> The subprocess console window that would normally be created on Windows systems will be hidden.
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All properties except `env` are read-only.
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### processOnSpawn.addListener(listener)
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Add a listener to be called after any listeners already attached.
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### processOnSpawn.prependListener(listener)
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Insert a listener to be called before any listeners already attached.
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### processOnSpawn.removeListener(listener)
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Remove the specified listener. If the listener was added multiple times only
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the first is removed.
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### processOnSpawn.removeAllListeners()
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Remove all attached listeners.
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[npm-image]: https://img.shields.io/npm/v/process-on-spawn.svg
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[npm-url]: https://npmjs.org/package/process-on-spawn
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[travis-image]: https://travis-ci.org/cfware/process-on-spawn.svg?branch=master
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[travis-url]: https://travis-ci.org/cfware/process-on-spawn
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[gk-image]: https://badges.greenkeeper.io/cfware/process-on-spawn.svg
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[downloads-image]: https://img.shields.io/npm/dm/process-on-spawn.svg
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[downloads-url]: https://npmjs.org/package/process-on-spawn
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[license-image]: https://img.shields.io/npm/l/process-on-spawn.svg
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[Object]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object
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[string]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type
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[boolean]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type
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[number]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type
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