Simple featureflag in nodejs

featureflag.js

/*
* Simple featureFlag
* */
const YAML = require('yaml');
const fs = require("fs");


class FeatureFlag {

    constructor() {
        let filepath = 'featureflag.yaml';
        let fileContent= fs.readFileSync(filepath, 'utf8');
        let yamlLoad = YAML.parse(fileContent);
        //console.log(JSON.stringify(yaml_load));
        this.config = yamlLoad;
    }

    isFeatureEnabled(component, featureFlag) {
        let isEnabled = this.isComponentEnabled(component)
        if(!isEnabled) {
            return false;
        }

        return this.checkFeature(component, featureFlag);

    }
    checkFeature(component, featureFlag) {
        let comp = this.getComponent(component)
        //console.log("checkFeature", comp.featureflags[featureFlag])
        return comp.featureflags[featureFlag].enabled
    }

    isComponentEnabled(component) {
        return this.checkComponent(component);
    }

    getComponent(component) {
        let comp = {};
        this.config.Components.forEach(e =>{
            if( component in e) {
                comp = e[component];
                return
            }
        })
        return comp
    }

    checkComponent(component) {
        let e = this.getComponent(component);
        try {
            return e.enabled;
        } catch (e) {
            if( e instanceof TypeError) {
                throw Error("component \""+ component + "\" missing in yaml");

            }
        }

    }

}

module.exports=FeatureFlag