Get length of the longest line segment in SVG using JavaScript

I want to find a way to get the length of the longest line segment in a SVG path. Since a path can jump from one point to another the getTotalLength() command doesn't work. As a simple example look at the following path:

<path d="
    M 0 0  L 100 0
    M 0 10 L 50 10
    M 0 20 L 150 20
">

While getTotalLength() outputs 300, I want 150 as my output. Is there a way to accomplish this?

I found a way to solve the problem. It works by splitting the path in multiple segments and measuring the seperately:

function maxSectionLength(path){
    let segments = path.attributes.d.value.split(/(?=[m,M])/),
        testPath = document.createElementNS('http://www.w3.org/2000/svg',"path"),
        max = 0;
    for(let d of segments){
        testPath.setAttributeNS(null, "d", d)
        max = Math.max(max,testPath.getTotalLength());
    }
    return max;
}