| "use strict"; | |
| Object.defineProperty(exports, "__esModule", { | |
| value: true | |
| }); | |
| exports.default = once; | |
| function once(fn) { | |
| return function () { | |
| if (fn === null) return; | |
| var callFn = fn; | |
| fn = null; | |
| callFn.apply(this, arguments); | |
| }; | |
| } | |
| module.exports = exports["default"]; |