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fullstack-open/part3/phonebook/node_modules/async/internal/onlyOnce.js
Andrew Trieu fa5d8255d6 Add part3
2023-05-23 08:05:53 +03:00

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363 B
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.default = onlyOnce;
function onlyOnce(fn) {
return function (...args) {
if (fn === null) throw new Error("Callback was already called.");
var callFn = fn;
fn = null;
callFn.apply(this, args);
};
}
module.exports = exports["default"];