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Contents
import type {IsNever} from '../is-never';
import type {UnknownArray} from '../unknown-array';
import type {StringToNumber} from './string';
/**
Returns the absolute value of a given value.
@example
```
NumberAbsolute<-1>;
//=> 1
NumberAbsolute<1>;
//=> 1
NumberAbsolute<NegativeInfinity>
//=> PositiveInfinity
```
*/
export type NumberAbsolute<N extends number> = `${N}` extends `-${infer StringPositiveN}` ? StringToNumber<StringPositiveN> : N;
/**
Check whether the given type is a number or a number string.
Supports floating-point as a string.
@example
```
type A = IsNumberLike<'1'>;
//=> true
type B = IsNumberLike<'-1.1'>;
//=> true
type C = IsNumberLike<1>;
//=> true
type D = IsNumberLike<'a'>;
//=> false
*/
export type IsNumberLike<N> =
N extends number ? true
: N extends `${number}`
? true
: N extends `${number}.${number}`
? true
: false;
/**
Returns the minimum number in the given union of numbers.
Note: Just supports numbers from 0 to 999.
@example
```
type A = UnionMin<3 | 1 | 2>;
//=> 1
```
*/
export type UnionMin<N extends number> = InternalUnionMin<N>;
/**
The actual implementation of `UnionMin`. It's private because it has some arguments that don't need to be exposed.
*/
type InternalUnionMin<N extends number, T extends UnknownArray = []> =
T['length'] extends N
? T['length']
: InternalUnionMin<N, [...T, unknown]>;
/**
Returns the maximum number in the given union of numbers.
Note: Just supports numbers from 0 to 999.
@example
```
type A = UnionMax<1 | 3 | 2>;
//=> 3
```
*/
export type UnionMax<N extends number> = InternalUnionMax<N>;
/**
The actual implementation of `UnionMax`. It's private because it has some arguments that don't need to be exposed.
*/
type InternalUnionMax<N extends number, T extends UnknownArray = []> =
IsNever<N> extends true
? T['length']
: T['length'] extends N
? InternalUnionMax<Exclude<N, T['length']>, T>
: InternalUnionMax<N, [...T, unknown]>;
Version data entries
28 entries across 28 versions & 2 rubygems