mixin.ts

export function Mixin<T>(...mixins: Array<new (...args: any[]) => any>): new (...args: any[]) => T {
    return mixins.reduceRight((prev, cur) => __extends(cur, prev), class {});
}

function __extends(f: MixinFunction, s: MixinFunction): MixinFunction {
    const mixedClass = class {
        constructor() {
            return f.apply(s.apply(this, arguments) || this, arguments);
        }
    };
    void Object.assign(mixedClass.prototype, f.prototype, s.prototype);
    for (const p in s) if (s.hasOwnProperty(p)) mixedClass[p] = s[p];
    for (const p in f) if (f.hasOwnProperty(p)) mixedClass[p] = f[p];

    return mixedClass;
}

interface MixinFunction {
    new (...args: any[]): any;
}