index.d.ts
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/**
Convert a value to an array.
_Supplying `null` or `undefined` results in an empty array._
@example
```
import arrify = require('arrify');
arrify('🦄');
//=> ['🦄']
arrify(['🦄']);
//=> ['🦄']
arrify(new Set(['🦄']));
//=> ['🦄']
arrify(null);
//=> []
arrify(undefined);
//=> []
```
*/
declare function arrify<ValueType>(
value: ValueType
): ValueType extends (null | undefined)
? []
: ValueType extends string
? [string]
: ValueType extends ReadonlyArray<unknown> // TODO: Use 'readonly unknown[]' in the next major version
? ValueType
: ValueType extends Iterable<infer T>
? T[]
: [ValueType];
export = arrify;