Code Revisions 2 Embed URL HTTPS clone URL You can clone with HTTPS or SSH. Typescript implementation of https://github.com/Dobiasd/articles/blob/master/from_oop_to_fp_-_inheritance_and_the_expression_problem.md

bar.js

var R = require('ramda');

var Bar;
(function (Bar) {
    function bar(s) {
        return {
            step: stepBar(s),
            display: displayBar(s)
        };
    }
    Bar.bar = bar;

    var stepBar = R.curry(function (s, delta) {
        return bar(s + ' ' + delta.toString());
    });

    var displayBar = function (s) {
        return s;
    };
})(Bar || (Bar = {}));
module.exports = Bar;

foo.js

var R = require('ramda');

var Foo;
(function (Foo) {
    function foo(i) {
        return {
            step: stepFoo(i),
            display: displayFoo(i)
        };
    }
    Foo.foo = foo;

    var stepFoo = R.curry(function (i, delta) {
        return foo(i + delta);
    });

    var displayFoo = function (i) {
        return i.toString();
    };
})(Foo || (Foo = {}));
module.exports = Foo;

main.js

var R = require('ramda');

var Foo = require('./foo');
var Bar = require('./bar');

function stepAll(l) {
    return R.map(function (b) {
        return b.step(1);
    }, l);
}

function displayAll(l) {
    return R.map(function (b) {
        return b.display;
    }, l).join('\n');
}

(function main() {
    var l = [Foo.foo(0), Bar.bar('')];

    var l1 = stepAll(stepAll(l));

    console.log(displayAll(l1));
})();