ts-trueskill/dist/src/rating.js

Port of python trueskill package in TypeScript

import { SkillGaussian } from './mathematics.js';
export class Rating extends SkillGaussian {
    constructor(mu = 25, sigma) {
        if (Array.isArray(mu)) {
            [mu, sigma] = mu;
        }
        else if (mu instanceof SkillGaussian) {
            sigma = mu.sigma;
            mu = mu.mu;
        }
        if (sigma === undefined) {
            sigma = mu / 3;
        }
        super(mu, sigma);
    }
    toString() {
        const mu = this.mu.toFixed(3);
        const sigma = this.sigma.toFixed(3);
        return `Rating(mu=${mu}, sigma=${sigma})`;
    }
}