silphius/app/ecs-components/index.js

import Arbitrary from '@/ecs/arbitrary.js';
import Schema from '@/ecs/schema.js';
import gather from '@/util/gather.js';

const specificationsAndOrDecorators = gather(
  import.meta.glob('./*.js', {eager: true, import: 'default'}),
);

const Components = {};
for (const componentName in specificationsAndOrDecorators) {
  // TODO: byKey, byId, ...
  if (Number.isInteger(+componentName)) {
    continue;
  }
  const specificationOrDecorator = specificationsAndOrDecorators[componentName];
  if ('function' === typeof specificationOrDecorator) {
    Components[componentName] = specificationOrDecorator(
      class Decorated extends Arbitrary {
        static componentName = componentName;
      }
    );
    if (!Components[componentName]) {
      throw new Error(`Component ${componentName} decorator returned nothing`);
    }
  }
  else {
    Components[componentName] = class Component extends Arbitrary {
      static componentName = componentName;
      static schema = new Schema({
        type: 'object',
        properties: specificationOrDecorator,
      });
    }
  }
}

export default Components;