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tree-pipe

v1.0.0

Published

a pipe line with branch, which can handle sync or async easily

Downloads

2

Readme

简单的管道处理器

tree-pipe 是一个简单的管道处理器, 在支持同步, 异步处理的同时, 还支持分支处理;

安装

npm i --save tree-pipe

例:

import pipe from 'tree-pipe';

function step0(data) {
    return {
        sum: data.a + data.b
    };
}

function step1(data) {
    return {
        sum: data.sum + 1
    };
}

function step2(data) {
    // pipe.save() 返回一个函数, 该方法将后面的方法队列组合为一个方法, 作为请求的回调;
    fetch('someUrl').then(res => res.json()).then(pipe.save());
    // 这里返回 pipe.stop() 阻止队列继续向下执行;
    return pipe.stop();
}

function step3(data) {
    console.log(data);
    return data;
}

// pipe.p(...) 同样返回一个方法, 该方法被调用则表示开始执行;

// 顺序执行
let p0 = pipe.p(step0, step1, step2, step3);

step0 -------> step1 -------> step2 -------> step3


// 传入数组表示分支
let p1 = pipe.p(step0, [step1, step2], step3);

step0 -------> step1 -------> step2 | | -----------> step3


// 分支嵌套分支
let p2 = pipe.p(step0, [step1], [step2, [step3], step3]);

step0 -------> step1 | | -----------> step2 -------> step3 | | -----------> step3

p0({a: 1, b: 2});
p1({a: 1, b: 2});
p2({a: 1, b: 2});