Javascript require 方法在另一个 require 方法中

Question

(有人可能会相应地更改标题)当像这样调用 javascript 的 require 方法时到底发生了什么:

var xyz = require('xy')(require('z'));

谢谢

Answer 1

var gulp = require('gulp-help')(require('gulp')); 有效是因为 require('gulp-help') 返回一个函数，然后将 gulp 导出的模块作为参数以及选项

喜欢

require('gulp-help')(require('gulp'), options);

These are all the options available to be passed to the gulp-help instance, NOT individual tasks.

description - modifies the default help message
aliases - adds aliases to the default help task
hideEmpty - hide all tasks with no help message defined. Useful when including 3rd party tasks
hideDepsMessage - hide all task dependencies
afterPrintCallback - a function to run after the default help task runs

这是一个简短的形式

var gulp-help = require('gulp-help');
var gulp = gulp-help(require('gulp'));