Lilconfig ⚙️
A zero-dependency alternative to cosmiconfig with the same API.
Installation
npm install lilconfigUsage
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;
* }
*/Difference to cosmiconfig
Lilconfig does not intend to be 100% compatible with cosmiconfig but tries to mimic it where possible. The key differences are:
- no support for yaml files out of the box(
lilconfigattempts 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. - no cache
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}
});ESM loader
Lilconfig v2 does not support ESM modules out of the box. However, you can support it with a custom a loader. Note that this will only work with the async lilconfig function and won't work with the sync lilconfigSync.
import {lilconfig} from 'lilconfig';
const loadEsm = filepath => import(filepath);
lilconfig('myapp', {
loaders: {
'.js': loadEsm,
'.mjs': loadEsm,
}
})
.search()
.then(result => {
result // {config, filepath}
result.config.default // if config uses `export default`
});Version correlation
- lilconig v1 → cosmiconfig v6
- lilconig v2 → cosmiconfig v7