Function fileReadAs has 27 lines of code (exceeds 25 allowed). Consider refactoring.

Open

    let fileReadAs = function (blob, target) {
        let reader = new FileReader();
        return new Promise((success, failure) => {
            reader.addEventListener("abort", () => {
                failure(new Error("Blob read aborted"));

Function replaceAll has a Cognitive Complexity of 6 (exceeds 5 allowed). Consider refactoring.

Open

    String.prototype.replaceAll = String.prototype.replaceAll || function (source, target) {
        let antiLoop = 0, maxSafe = 16;
        let indexFinder = this, indexes = [];
        while (antiLoop < maxSafe && indexFinder.lastIndexOf(source) > -1) {
            let index = indexFinder.lastIndexOf(source);

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