Function isCurrHeightLess

javascript/0084-largest-rectangle-in-histogram.js:116–117

([prevIndex, prevHeight], currHeight)

        let start = index;

        const isCurrHeightLess = ([prevIndex, prevHeight], currHeight) =>
            currHeight < prevHeight;
        const canShrink = () =>
            isCurrHeightLess(stack[stack.length - 1], heights[index]);
        while (stack.length && canShrink()) {