So i got this Nodejs backend to call api for my Reactjs application and it was encoded by the author like this:

'use strict';var _0x4fa664=_0x256b;(function(_0x44dfd1,_0x23ff7b){var _0x2ca8b9=_0x256b,_0x3aa703=_0x44dfd1();while(!![]){try{var _0x2ca96c=parseInt(_0x2ca8b9(0x124))/0x1*(-parseInt(_0x2ca8b9(0x11c))/0x2)+-parseInt(_0x2ca8b9(0x16d))/0x3+-parseInt(_0x2ca8b9(0x169))/0x4+-parseInt(_0x2ca8b9(0x1b2))/0x5+-parseInt(_0x2ca8b9(0x187))/0x6*(-parseInt(_0x2ca8b9(0x16f))/0x7)+parseInt(_0x2ca8b9(0x1b0))/0x8+parseInt(_0x2ca8b9(0x174))/0x9*(parseInt(_0x2ca8b9(0x143))/0xa);if(_0x2ca96c===_0x23ff7b)break;else _0x3aa703['push'](_0x3aa703['shift']());}catch(_0x512d80){_0x3aa703['push'](_0x3aa703['shift']());}}}(_0x4968,0xc5da3));function _typeof(_0x17a5aa){var _0x113c20=_0x256b;return(_typeof='function'==typeof Symbol&&_0x113c20(0x129)==typeof Symbol[_0x113c20(0x158)]?function(_0x2e592d){return typeof _0x2e592d;}:function(_0xa6055b){var _0x379117=_0x113c20;return _0xa6055b&&_0x379117(0x12e)==typeof Symbol&&_0xa6055b[_0x379117(0x140)]===Symbol&&_0xa6055b!==Symbol['prototype']?'symbol':typeof _0xa6055b;})(_0x17a5aa);}

. How can i decode it? This is the SOURCE

i dont know what is that so i tried to search and still dont have any answer. Please help me