compose

说明

从右往左执行处理器函数, 与 pipe() 方法相反

源码

https://github.com/ddzy/ts-utility-plugins/tree/master/src/ddzy/utility/function/compose

用法

compose.test.ts
import { compose } from "../../utility/function/compose";
describe('compose', () => {
test('compose should invoke function from right to left', () => {
function func1() {
return func2() * 2;
}
function func2() {
return func3() * 3;
}
function func3() {
return 4;
}
function func4() {
return func5() + '*' + 'yang';
}
function func5() {
return func6() + '*' + 'zhao';
}
function func6() {
return 'duan';
}
const received = {
s1: [func1, func2, func3],
s2: [func4, func5, func6],
};
const expected = {
p1: 24,
p2: 'duan*zhao*yang',
};
const r1 = compose(...received.s1);
const r2 = compose(...received.s2);
expect(r1).toBe(expected.p1);
expect(r2).toBe(expected.p2);
});
});