Cookie Clicker Number Formatting for TS

BigFormatterService.ts

import type { INumberFormatterService } from "../services/INumberFormatterService";

export class BigFormatterService implements INumberFormatterService {

    private static formatLong: string[] = [' thousand', ' million', ' billion', ' trillion', ' quadrillion', ' quintillion', ' sextillion', ' septillion', ' octillion', ' nonillion'];
    private static prefixes = ['', 'un', 'duo', 'tre', 'quattuor', 'quin', 'sex', 'septen', 'octo', 'novem'];
    private static suffixes = ['decillion', 'vigintillion', 'trigintillion', 'quadragintillion', 'quinquagintillion', 'sexagintillion', 'septuagintillion', 'octogintillion', 'nonagintillion'];

    constructor() {
        for (var i in BigFormatterService.suffixes) {
            for (var ii in BigFormatterService.prefixes) {
                BigFormatterService.formatLong.push(' ' + BigFormatterService.prefixes[ii] + BigFormatterService.suffixes[i]);
            }
        }
    }

    format(value: number): string {

        let floats = 0;

        var negative = (value < 0);
        var decimal = '';
        var fixed = value.toFixed(floats);
        if (floats > 0 && Math.abs(value) < 1000 && Math.floor(Number(fixed)) != Number(fixed)) decimal = '.' + (fixed.toString()).split('.')[1];
        value = Math.floor(Math.abs(value));
        if (floats > 0 && fixed == (value + 1).toString()) value++;
        var format = 1;

        var formatter = function (val: number) {
            var base = 0, notationValue = '';
            if (!isFinite(val)) return 'Infinity';
            if (val >= 1000000) {
                val /= 1000;
                while (Math.round(val) >= 1000) {
                    val /= 1000;
                    base++;
                }
                if (base >= BigFormatterService.formatLong.length) { return 'Infinity'; } else { notationValue = BigFormatterService.formatLong[base]; }
            }
            return (Math.round(val * 1000) / 1000) + notationValue;
        };

        var output = (value.toString().indexOf('e+') != -1 && format == 2) ? value.toPrecision(3).toString() : formatter(value).toString().replace(/\B(?=(\d{3})+(?!\d))/g, ',');

        if (output == '0') negative = false;
        return (negative ? '-' + output : output + decimal);
    }
}

INumberFormatterService.ts

export interface INumberFormatterService {
    /**
     * Formats the specified value into a string
     * @param value The number to format
     */
    format(value: number): string;
}