60 lines
1.9 KiB
Markdown
60 lines
1.9 KiB
Markdown
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# rcloader
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[](https://travis-ci.org/spalger/rcloader)
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For build system plugins that need to fetch relative config files (like .jshintrc).
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## Features
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- Find the closest config file (like .jshintrc) relative to the file you are linting
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- Lookups are cached to limit IO operations
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- Accepts input directly from plugin consumers to
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- specifiy a file that should always be used
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- specify a default file
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- specify overrides
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- disable file lookup
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## Install
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```sh
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npm install rcloader
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```
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## Use
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This plugin was written to specifically address this issue for a couple of gulp plugins.
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### within a gulp plugin
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```js
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var RcLoader = require('rcloader');
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var map = require('map-stream');
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module.exports = function MyGulpPlugin(options) {
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var rcLoader = new RcLoader('.configfilename', options);
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return map(function (file, cb) {
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// get the options for this file specifically
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rcLoader.for(file.path, function (err, fileOpts) {
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// do something cool
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// send the file along
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cb(null, file);
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});
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});
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};
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```
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If you would rather, just skip the callback and it will run synchronously.
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```js
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var fileOpts = rcLoader.for(file.path, options);
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```
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## Options
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The second argument to the `RcLoader` constructor should be the options that plugin consumers define, and it can take a few different forms.
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**If the user specifies a string**, it is used as a path to the only config file that they care about. Calling `rcLoader.for(path)` will always return a copy of the config file at that path.
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**If the user specifies an object**, the following keys will be stripped from it:
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- `lookup`, Boolean: Find the closest config file each time `.for()` is called. default is true, unless `options` is a path.
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- `defaultFile`, string: Specify a default configuration file.
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If `defaultFile` is not specified, all values except `lookup` will override values found in the config file.
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