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import { greatest_common_divisor } from "../max-points-on-a-line/greatest_common_divisor.ts";import { deduplication } from "./deduplication.ts";import { Fraction } from "./Fraction.ts";import { parseFraction } from "./parseFraction.ts";
function fractionAddition(expression: string): string {    const fractions = parseFraction(expression);
    const denominator = deduplication(        fractions.map((f) => f.denominator),    ).reduce((a, b) => a * b);    const molecular = fractions        .map((f) => (f.sign * f.molecular * denominator) / f.denominator)        .reduce((a, b) => a + b);    const gcd = greatest_common_divisor(molecular, denominator);
    return new Fraction({        denominator: denominator / gcd,        molecular: molecular / gcd,    }).toString();}export default fractionAddition;