openaire-library/utils/number-utils.class.ts

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export enum Level {
NONE,
K,
M,
B
}
export interface NumberSize {
number: number;
size: "B" | "M" | "K" | ""
count: number;
}
export class NumberUtils {
public static roundNumber(num: number, level: Level = Level.NONE, decimal = 0): any {
let roundNum: NumberSize;
let initialNum = num;
let variance = Math.pow(10, decimal);
if (num >= 1000000000 && level <= Level.B) {
num = num / 1000000;
num = Math.round(num * variance) / variance;
roundNum = {number: num, size: "B", count: initialNum};
} else if (num >= 1000000 && level <= Level.M) {
num = num / 1000000;
num = Math.round(num * variance) / variance;
roundNum = {number: num, size: "M", count: initialNum};
} else if (num >= 1000 && level <= Level.K) {
num = num / 1000;
num = Math.round(num * variance) / variance;
roundNum = {number: num, size: "K", count: initialNum};
} else if (num >= 100) {
num = num / 100;
num = Math.round(num * variance) / variance;
num = num * 100;
roundNum = {number: num, size: "", count: initialNum};
} else {
roundNum = {number: num, size: "", count: initialNum};
}
return roundNum;
}
}