hyperhtml/esm/objects/Intent.js

A Fast & Light Virtual DOM Alternative

const attributes = {};
const intents = {};
const keys = [];
const hasOwnProperty = intents.hasOwnProperty;

let length = 0;

export default {

  // used to invoke right away hyper:attributes
  attributes,

  // hyperHTML.define('intent', (object, update) => {...})
  // can be used to define a third parts update mechanism
  // when every other known mechanism failed.
  // hyper.define('user', info => info.name);
  // hyper(node)`<p>${{user}}</p>`;
  define: (intent, callback) => {
    if (intent.indexOf('-') < 0) {
      if (!(intent in intents)) {
        length = keys.push(intent);
      }
      intents[intent] = callback;
    } else {
      attributes[intent] = callback;
    }
  },

  // this method is used internally as last resort
  // to retrieve a value out of an object
  invoke: (object, callback) => {
    for (let i = 0; i < length; i++) {
      let key = keys[i];
      if (hasOwnProperty.call(object, key)) {
        return intents[key](object[key], callback);
      }
    }
  }
};