mutants-appfx/src/controllers/eventPath.js

appfx module

const controllerEvents = new Map();

export const findActions = (target, eventName)=>{
  if (!controllerEvents.has(target.__proto__.constructor) ){
    return [];
  }
  const ctlpaths = controllerEvents.get(target.__proto__.constructor);
  return [...(ctlpaths[eventName] || [])];
}

export default (eventName, mappings) => {
  return (target, name, descriptor) => {
    let ctlpaths;
    if (!controllerEvents.has(target.constructor)) {
      ctlpaths = {};
      controllerEvents.set(target.constructor, ctlpaths);
    } else {
      ctlpaths = controllerEvents.get(target.constructor);
    }
    let eventPaths = ctlpaths[eventName];
    if (!eventPaths) {
      eventPaths = new Set();
      ctlpaths[eventName] = eventPaths;
    }
    eventPaths.add(name);
    return descriptor;
  }
}