Function filter

filter<T>(
option: OptionType<T>,
predicate: (value: T) => boolean,
): OptionType<T>
Keep the value if predicate holds; otherwise collapse to none. Supports data-first and curried (pipe-friendly) forms.
Type Parameters
- T
Parameters
- option: OptionType<T>
- predicate: (value: T) => boolean
Returns OptionType<T>
Example
```
const adult = pipe(
    fromNullable(user.age),
    filter((age) => age >= 18),
  )
```
- Defined in option/transform.ts:63
filter<T>(
predicate: (value: T) => boolean,
): (option: OptionType<T>) => OptionType<T>
Keep the value if predicate holds; otherwise collapse to none. Supports data-first and curried (pipe-friendly) forms.
Type Parameters
- T
Parameters
- predicate: (value: T) => boolean
Returns (option: OptionType<T>) => OptionType<T>
Example
```
const adult = pipe(
    fromNullable(user.age),
    filter((age) => age >= 18),
  )
```
- Defined in option/transform.ts:64