Description
The package provides methods to check whether a JSON object or a JSON array is empty or not.
- The package considers an object empty when it is
null,undefinedor has no keys. - The package considers an array empty when it is
null,undefinedor its length is 0.
Typescript
The package already contains Typescript *.d.ts definition files.
How to use
javascript
const checkEmptyJson = require('check-empty-json');
const jsonStatus = checkEmptyJson.isJsonEmpty({}); // returns true
const arrayStatus = checkEmptyJson.isArrayEmpty(['element 1']); // returns falsetypescript
import { isJsonEmpty, isArrayEmpty } from 'check-empty-json';
const jsonStatus: boolean = isJsonEmpty({key1: 'one'}); // returns false
const arrayStatus: boolean = isArrayEmpty([1, 2]); // returns falseisJsonEmpty() examples
Examples are provided in Typescript.
import { isJsonEmpty } from 'check-empty-json';
isJsonEmpty(null); // returns true
isJsonEmpty(undefined); // returns true
isJsonEmpty({}); // returns true
isJsonEmpty({
key0: {},
key1: 'key 1',
key2: 123,
key3: ['1', '2'],
}); // returns false
isJsonEmpty({
key0: null
}); // returns false
isJsonEmpty({
key0: undefined
}); // returns false
isJsonEmpty({key1: ''}); // returns falseisArrayEmpty() examples
Examples are provided in Typescript.
import { isArrayEmpty } from 'check-empty-json';
isArrayEmpty(null); // returns true
isArrayEmpty(undefined); // returns true
isArrayEmpty([]); // returns true
isArrayEmpty([1, 30, 'text', {}]); // returns false
isArrayEmpty([null]); // returns false
isArrayEmpty([undefined]); // returns false
isArrayEmpty([{}]); // returns false