compact

说明

过滤指定数组中的假值(0''falsenullundefinedNaN)

源码

https://github.com/ddzy/ts-utility-plugins/tree/master/src/ddzy/utility/array/compact

用法

compact.test.ts
import { compact } from "../../utility/array/compact";
describe('compact', () => {
test('compact should return an empty array when receive an empty array', () => {
const received: any[] = [];
const expected = 0;
const result = compact<any>(received);
expect(result.length).toBe(0);
});
test('compact should return the array only contains truthy value', () => {
const received: any[] = [true, false, 0, '', undefined, NaN, null, 22];
const expected = [true, 22];
const result = compact<any>(received);
for (const [i, v] of result.entries()) {
expect(v).toBe(expected[i]);
}
});
test('compact should return a new array', () => {
const received: number[] = [0, 1, 2, 3, 4];
const expected: number[] = [1, 2, 3, 4];
const result = compact<number>(received);
received.push(5);
for (const [i, v] of result.entries()) {
expect(v).toBe(expected[i]);
}
});
})