I have an array like so:

[
    {
        indexes: [1, 3, 5, 8],
        length: 2
    }, 
    {
        indexes: [2, 4, 6, 7],
        length: 1
    }
]

I am using this to split a string (and many other similar ones):

matatatatt

I am trying to split it by the array ['at', 't'], which should return something like this in the future:

['m', 'at', 'at', 'at', 'at', 't']

This is the code I currently have:

function splitVars (eq, vars) {
        let splitted = eq.split("");
        let locs = [];

        for (let i = 0; i < vars.length; i++) {
            let variable = vars[i];

            let found = locations(variable, eq)

            locs.push({
                indexes: found,
                variable: variable,
                varLength: variable.length
            })
        }

        return locs;
    }

    function locations(substring, string){
        var a=[],
            i=-1;
        while((i = string.indexOf(substring, i + 1)) >= 0) a.push(i);
        return a;
    }        

console.log(splitVars('wmtmtmtt', ['mt', 't']));

However, back to my question. As you can tell, because the length of the second string is one, it is picking up the one letter in the first indexes that is the same. Because the indexes [2, 4, 6] are overlapping with the first indexes, I would like to remove them.

How can I do such a thing?