To interpolate two interval's https://pt.wikipedia.org/wiki/Interpolação_linear

Interpolate.js

function interpolate(xInterval, yInterval) {
    let [x0, x1] = xInterval;
    let [y0, y1] = yInterval;

    return function (xA) {
        if (xA > x1) xA = x1;
        else if (xA < x0) xA = x0;

        const yA = y0 + (y1 - y0) * ((xA - x0) / (x1 - x0));

        return yA;
    };
}

// ======
// USAGE
// ======

// Demo usage
const calc = interpolate([0, 5], [500, 1000]);
console.log(calc(2.5)); // Will show 750

// Apply in a Drawer Navigator
const touchXToTranslateX = interpolate([0, window.innerWidth], [0, 100]);
onTouchEvent(e => {
  drawer.style.transform = `translateX(${touchXToTranslateX(e.x)}%)`;
});