umd define

umd.js

;(function (root, factory) {
    if (typeof define === 'function' && define.amd) {
        // AMD
        define([], factory)
    } else if (typeof exports === 'object') {
        // Node, CommonJS
        module.exports = factory()
    } else {
        // Window
        root.collisionChecker = factory()
    }
}(this, function () {
    function func() {
        console.log('记得修改 Window 的导出')
    }

    return func
}))