123456789101112131415161718192021222324252627
export class Fraction {    sign: number;    molecular: number;    denominator: number;    toString() {        return `${            this.sign < 0 ? "-" : ""        }${this.molecular}/${this.denominator}`;    }    constructor({        sign = "+",        molecular = 1,        denominator = 1,    }: {        sign?: "+" | "-" | number;        molecular?: number | string;        denominator?: number | string;    } = {}) {        sign = sign || "+";        this.sign = (sign === "+" ? 1 : sign === "-" ? -1 : sign) *            Math.sign(Number(denominator)) *            Math.sign(Number(molecular));        this.molecular = Math.abs(Number(molecular));        this.denominator = Math.abs(Number(denominator));    }}