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readme.md
Lilconfig ⚙️
A zero-dependency alternative to cosmiconfig with the same API.
Installation
npm install lilconfig
Usage
import {lilconfig, lilconfigSync} from 'lilconfig';
// all keys are optional
const options = {
stopDir: '/Users/you/some/dir',
searchPlaces: ['package.json', 'myapp.conf.js'],
ignoreEmptySearchPlaces: false
}
lilconfig(
'myapp',
options // optional
).search() // Promise<LilconfigResult>
lilconfigSync(
'myapp',
options // optional
).load(pathToConfig) // LilconfigResult
/**
* LilconfigResult
* {
* config: any; // your config
* filepath: string;
* }
*/
ESM
ESM configs can be loaded with async API only. Specifically js
files in projects with "type": "module"
in package.json
or mjs
files.
Difference to cosmiconfig
Lilconfig does not intend to be 100% compatible with cosmiconfig
but tries to mimic it where possible. The key difference is no support for yaml files out of the box(lilconfig
attempts to parse files with no extension as JSON instead of YAML). You can still add the support for YAML files by providing a loader, see an example below.
Options difference between the two.
cosmiconfig option | lilconfig |
---|---|
cache | ✅ |
loaders | ✅ |
ignoreEmptySearchPlaces | ✅ |
packageProp | ✅ |
searchPlaces | ✅ |
stopDir | ✅ |
transform | ✅ |
Loaders examples
Yaml loader
If you need the YAML support you can provide your own loader
import {lilconfig} from 'lilconfig';
import yaml from 'yaml';
function loadYaml(filepath, content) {
return yaml.parse(content);
}
const options = {
loaders: {
'.yaml': loadYaml,
'.yml': loadYaml,
// loader for files with no extension
noExt: loadYaml
}
};
lilconfig('myapp', options)
.search()
.then(result => {
result // {config, filepath}
});
Version correlation
- lilconig v1 → cosmiconfig v6
- lilconig v2 → cosmiconfig v7
- lilconig v3 → cosmiconfig v8