Function isOneOf

A factory function that creates a function to check if the payload is one of the given types.

Example

import { isOneOf, isNull, isUndefined } from 'is-what'

  const isNullOrUndefined = isOneOf(isNull, isUndefined)

  isNullOrUndefined(null) // true
  isNullOrUndefined(undefined) // true
  isNullOrUndefined(123) // false

isOneOf<A, B, C>(a: TypeGuard<A, B>, b: TypeGuard<A, C>): TypeGuard<A, B | C>
A factory function that creates a function to check if the payload is one of the given types.
Type Parameters
- A
- B
- C
Parameters
- a: TypeGuard<A, B>
- b: TypeGuard<A, C>
Returns TypeGuard<A, B | C>
Example
```
import { isOneOf, isNull, isUndefined } from 'is-what'

  const isNullOrUndefined = isOneOf(isNull, isUndefined)

  isNullOrUndefined(null) // true
  isNullOrUndefined(undefined) // true
  isNullOrUndefined(123) // false
```
- Defined in isOneOf.ts:15
isOneOf<A, B, C, D>(
    a: TypeGuard<A, B>,
    b: TypeGuard<A, C>,
    c: TypeGuard<A, D>,
): TypeGuard<A, B | C | D>
A factory function that creates a function to check if the payload is one of the given types.
Type Parameters
- A
- B
- C
- D
Parameters
- a: TypeGuard<A, B>
- b: TypeGuard<A, C>
- c: TypeGuard<A, D>
Returns TypeGuard<A, B | C | D>
Example
```
import { isOneOf, isNull, isUndefined } from 'is-what'

  const isNullOrUndefined = isOneOf(isNull, isUndefined)

  isNullOrUndefined(null) // true
  isNullOrUndefined(undefined) // true
  isNullOrUndefined(123) // false
```
- Defined in isOneOf.ts:31
isOneOf<A, B, C, D, E>(
    a: TypeGuard<A, B>,
    b: TypeGuard<A, C>,
    c: TypeGuard<A, D>,
    d: TypeGuard<A, E>,
): TypeGuard<A, B | C | D | E>
A factory function that creates a function to check if the payload is one of the given types.
Type Parameters
- A
- B
- C
- D
- E
Parameters
- a: TypeGuard<A, B>
- b: TypeGuard<A, C>
- c: TypeGuard<A, D>
- d: TypeGuard<A, E>
Returns TypeGuard<A, B | C | D | E>
Example
```
import { isOneOf, isNull, isUndefined } from 'is-what'

  const isNullOrUndefined = isOneOf(isNull, isUndefined)

  isNullOrUndefined(null) // true
  isNullOrUndefined(undefined) // true
  isNullOrUndefined(123) // false
```
- Defined in isOneOf.ts:48
isOneOf<A, B, C, D, E, F>(
    a: TypeGuard<A, B>,
    b: TypeGuard<A, C>,
    c: TypeGuard<A, D>,
    d: TypeGuard<A, E>,
    e: TypeGuard<A, F>,
): TypeGuard<A, B | C | D | E | F>
A factory function that creates a function to check if the payload is one of the given types.
Type Parameters
- A
- B
- C
- D
- E
- F
Parameters
- a: TypeGuard<A, B>
- b: TypeGuard<A, C>
- c: TypeGuard<A, D>
- d: TypeGuard<A, E>
- e: TypeGuard<A, F>
Returns TypeGuard<A, B | C | D | E | F>
Example
```
import { isOneOf, isNull, isUndefined } from 'is-what'

  const isNullOrUndefined = isOneOf(isNull, isUndefined)

  isNullOrUndefined(null) // true
  isNullOrUndefined(undefined) // true
  isNullOrUndefined(123) // false
```
- Defined in isOneOf.ts:66

Function isOneOf

Example

Type Parameters

Parameters

Returns TypeGuard<A, B | C>

Example

Type Parameters

Parameters

Returns TypeGuard<A, B | C | D>

Example

Type Parameters

Parameters

Returns TypeGuard<A, B | C | D | E>

Example

Type Parameters

Parameters

Returns TypeGuard<A, B | C | D | E | F>

Example

Settings