0.3.3 • Published 4 months ago
value-getter v0.3.3
value-getter
Install
npm install --save value-getter
# or
yarn add value-getter
Usage
import { ValueGetter } from 'value-getter'
const getNodeEnv =
env('NODE_ENV')
.required()
.get()
function env(name: string): ValueGetter<string | undefined> {
return new ValueGetter(name, () => process.env[name])
}
API
class ValueGetter<T> {
new (name: string, get: Getter<T>) => ValueGetter<T>
new (get: Getter<T>) => ValueGetter<T>
default<U>(val: U): IValueGetter<AddDefault<T, U>>
assert<U extends T = T>(assert: (val: T) => unknown): IValueGetter<U>
required(): IValueGetter<NonNullable<T>>
memoize(cache:
| Map<Getter<T>, T>
| WeakMap<Getter<T>, T>
): ValueGetter<T>
memoize(cacheGetter: Getter<
| Map<Getter<T>, T>
| WeakMap<Getter<T>, T>
>): ValueGetter<T>
convert<U>(convert: (val: T) => U): IValueGetter<U>
tap(sideEffect: (val: T) => void): IValueGetter<T>
get(): Getter<T>
value(): T
}
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