| 1 | const isUndefined = (value: unknown): boolean => { |
| 2 | return typeof value === 'undefined' |
| 3 | } |
| 4 | |
| 5 | export const ifUndefined = <T>(value: T | undefined, isValue: T): T => { |
| 6 | if (isUndefined(value) === true) return isValue |
| 7 | return value as T |
| 8 | } |
| 9 | |
| 10 | // const isIterable = <T>(obj: T): boolean => { |
| 11 | // if (obj == null) { |
| 12 | // return false |
| 13 | // } |
| 14 | // return typeof (obj as unknown as Iterable<T>)[Symbol.iterator] === 'function' |
| 15 | // } |
| 16 | |
| 17 | // const ifNotIterableDo = <T>(obj: T, cb: () => void): void => { |
| 18 | // if (isIterable(obj) === false) cb() |
| 19 | // } |
| 20 | |
| 21 | // export const compose = <T>(...fns: ((arg: T) => T)[]): ((x: T) => T) => { |
| 22 | // return (x: T) => fns.reduceRight((y, fn) => fn(y), x) |
| 23 | // } |