LeoAref

export class Dispatcher {
    constructor () {
        this.events = {};   
    }
    
    addListener (event, callback) {
        // Check if the callback is not a function
        if (typeof callback !== 'function') {
            console.error(`The listener callback must be a function, the given type is ${typeof callback}`);
            return false;

LeoAref

export function renameKeyName(obj, oldName, newName) {
  const clone = cloneDeep(obj);
  const keyVal = clone[oldName];

  delete clone[oldName];
  clone[newName] = keyVal;

  return clone;
}

LeoAref

h       scroll left
j       scroll down
k       scroll up
l       scroll right
gg      scroll to top of the page
G       scroll to bottom of the page
f       activate link hints mode to open in current tab
F       activate link hints mode to open in new tab
r       reload

LeoAref

import isObject from 'lodash/fp/isObject';
import isBoolean from 'lodash/fp/isBoolean';

// this is a naive implementation
export function validateData(data, rules) {
  let errors = {};
  
  const isValid = Object.keys(rules).reduce((_isValid, key) {
    const error = validateField(data[key], rules[key]);