isNull

说明

判断是否为严格的null

源码

https://github.com/ddzy/ts-utility-plugins/tree/master/src/ddzy/utility/others/isNull

用法

isNull.test.ts
import { isNull } from "util";
describe('isNull', () => {
test('isNull should return `false` if received a non null value', () => {
const received = [
0,
'',
undefined,
{},
[],
function () { },
];
for (const v of received) {
expect(isNull(v)).toBeFalsy();
}
});
test('isNull should return `true` if received a null value', () => {
const received = [
null,
];
for (const v of received) {
expect(isNull(v)).toBeTruthy();
}
});
});