empty

@nick/is/empty

isEmpty

Signature

function isEmpty(it: string): it is "";

Checks if a given value is an empty string.

Parameters

Name	Info
it	The value to check.

Returns

true if the value is an empty string, false otherwise.

Category

Chain

Examples

import { isEmpty } from "@nick/is/empty";

isEmpty(""); // true
isEmpty("a"); // false

isEmpty

Signature

function isEmpty(it: readonly unknown[]): it is readonly [];

Checks if a given value is an empty Array object.

Parameters

Name	Info
it	The value to check.

Returns

true if the value is an empty Array object, false otherwise.

Category

Chain

Examples

import { isEmpty } from "@nick/is/empty";

isEmpty([]); // true
isEmpty([1]); // false

isEmpty

Signature

function isEmpty<U extends ArrayLike<any>>(it: U): it is U & {
  readonly length: 0;
};

Checks if a given value is an empty ArrayLike object.

Parameters

Name	Info
it	The value to check.

Returns

true if the value is an empty ArrayLike object, false otherwise.

Category

Chain

Examples

import { isEmpty } from "@nick/is/empty";

isEmpty([]); // true
isEmpty([1]); // false

isEmpty

Signature

function isEmpty(it: unknown): it is {
  [K in undefined]: never;
};

Checks if a given value is an empty object.

Parameters

Name	Info
it	The value to check.

Returns

true if the value is an empty object, false otherwise.

Category

Chain

Examples

import { isEmpty } from "@nick/is/empty";

isEmpty({}); // true
isEmpty({ a: 1 }); // false

isEmpty

Signature

function isEmpty(it: unknown): it is
  | ""
  | {
    length: 0;
  }
  | {
    [K in undefined]: never;
  };

Checks if a given value is an empty object, array, or string.

Parameters

Name	Info
it	The value to check.

Returns

true if the value is an empty object, array, or string, false otherwise.

Category

Chain

Examples

import { isEmpty } from "@nick/is/empty";

isEmpty({}); // true
isEmpty([]); // true
isEmpty(""); // true

isEmpty({ a: 1 }); // false
isEmpty([1]); // false
isEmpty("a"); // false