Weird rendering approach

implementation.js

const RENDER_COMMAND = '@blubb/RENDER';

const createOverride = factory => {
    const override = lower => {
        if (lower === RENDER_COMMAND) {
            return factory();
        }

        return createOverride(upper => factory(Object.assign(lower, upper)));
    };
    override.isOverride = true;
    return override;
};

const resolveObject = (obj, context) => {
    let newObj = {};
    Object.keys(obj).forEach(key => {
        if (typeof obj[key] === 'function') {
            if (obj[key].isOverride) {
                newObj[key] = obj[key](RENDER_COMMAND)(context);
            } else {
                newObj[key] = obj[key](context);
            }
        } else {
            newObj[key] = obj[key];
        }
    });

    return newObj;
};

export const createRenderer = factory => configuration => {
    return createOverride(override => context => factory(resolveObject(Object.assign(configuration, override), context)));
};


export const runtimeFactory = callback => {
    const runtime = (renderer, context = {}) => override => {
        const result = override ? renderer(override)(RENDER_COMMAND)(context) : renderer(RENDER_COMMAND)(context);
        callback(result);
        return runtime(renderer, context);
    };

    return runtime;
}

export const graph = createRenderer(configuration => {
    return Object.keys(configuration).map(key => configuration[key]).join('');
});

export const template = createRenderer(configuration => {
    const {template} = configuration;
    return template(configuration);
});

index.js

const graph = require('./src/index.js').graph;
const template = require('./src/index.js').template;
const runtimeFactory = require('./src/index.js').runtimeFactory;

const runtime = runtimeFactory(result => console.log(result));

const test = graph({
    welcome: 'Hello, ',
    name: 'Paul!'
});

const peter = test({
    name: context => (context.unlike || 'Peter') + '?!?'
});

const goaway = peter({
    welcome: 'Go away, '
});

const mary = peter({
    welcome: 'Good to see you, ',
    name: 'Mary <3 :)',
    add: graph({
        1: 'some more',
        2: 'details'
    }),
    blubb: template({
        template: () => ({name, age}) => name + ' is ' + age + ' years old',
        name: 'wilhelm',
        age: 122
    })
});

runtime(test)();
runtime(peter)();
runtime(goaway, { unlike: 'Dieter' })();
runtime(mary)();