@gamestdio/easing/lib/back-in-out.js

Collection of easing equations for JavaScript / TypeScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
function backInOut(t) {
    const s = 1.70158 * 1.525;
    if ((t *= 2) < 1)
        return 0.5 * (t * t * ((s + 1) * t - s));
    return 0.5 * ((t -= 2) * t * ((s + 1) * t + s) + 2);
}
exports.backInOut = backInOut;