measurement-framework/lib/MeasurementFramework.js

Collection of Javascript code to implement a browser based measurement system for websites. It uses a cookie to store a users action on a webpage and let you map thoose actions to a particular state in the user journey.

/**
 * Singelton object to register all user functions.
 */
import dataLayerPush from "./helpers/dataLayerPush"
import forEach from "lodash-es/forEach"
import isUndefined from "lodash-es/isUndefined"
import isFunction from "lodash-es/isFunction"
import merge from "lodash-es/merge"

class MeasurementFramework {

    constructor() {
        console.log("Measurement Framework constructed")
        this.registered = []
        this.a = "__mf_lock"
    }

    register(func) {
        if (isFunction(func)) {
            this.registered.push(func)
        } else {
            console.warn("Measurement Framework received a non-function.", func)
        }

    }

    init() {
        if (isUndefined(window[this.a])) {
            console.log("Measurement Framework Loaded")
            let initDataLayer = {}
            forEach(this.registered, function (func) {
                initDataLayer = merge(initDataLayer, func.call({}))
            })
            dataLayerPush(initDataLayer, "Measurement Framework Loaded")
            window[this.a] = true
        } else {
            console.log("Measurement Framework Loaded")
        }

    }
}


export default new MeasurementFramework()