ES6 Mixins

gistfile1.js

var mixin = require('mixin');

class Cyclist {
    ride() {
        console.log(`${this.name} is riding`);
    }   
}

class Swimmer {
    swim() {
        console.log(`${this.name} is swimming`);
    }
}

class Runner {
    run() {
        console.log(`${this.name} is running`);
    }
}

class Triathlete extends
    mixin(mixin(Cyclist, Swimmer), Runner) {
        
    constructor(name) {
        this.name = name;
    }

    letsDoIt() {
        this.ride();
        this.swim();
        this.run();
    }
}

let bob = new Triathlete('Bob');
bob.letsDoIt();

Hi,
I'm getting this error, when using your code:

C:\Coding\test\index.js:26
this.name = name;
^

ReferenceError: this is not defined
at Triathlete (C:\Coding\test\index.js:26:9)
at Object. (C:\Coding\test\index.js:36:11)
at Module._compile (module.js:409:26)
at Object.Module._extensions..js (module.js:416:10)
at Module.load (module.js:343:32)
at Function.Module._load (module.js:300:12)
at Function.Module.runMain (module.js:441:10)
at startup (node.js:139:18)
at node.js:968:3