Tween a number, increment number from 0 to a desired target within a specified duration in seconds. Get count number in callback function.

tweenNumber.js

/** Tween a number, increment number from 0 to a desired target within a specified duration in seconds. Get count number in callback function.
 * @param {number} target
 * @param {number} duration
 * @param {function} callback
 * @returns {Promise<void>}
 * @example
 * await tweenNumber({ target: 100, duration: 1 }, (n) => console.log(n));
 */
const tweenNumber = async ({ target, duration }, callback = (n = 0) => {}) => {
  let count = 0;
  while (count < target) {
    const add = target / (60 * duration);
    if (count + add > target) {
      count = target;
    }
    else {
      count += add;
    }
    await new Promise(resolve => setTimeout(resolve, duration * 1000 / 60));
    callback(count);
  }
};