builder-pattern/dist/index.mjs

Create a builder pattern for Typescript using ES6 proxy.

// src/Builder.ts
function Builder(typeOrTemplate, templateOrOverride, override) {
  let type;
  let template;
  let overrideValues;
  if (typeOrTemplate instanceof Function) {
    type = typeOrTemplate;
    template = templateOrOverride;
    overrideValues = override;
  } else {
    template = typeOrTemplate;
    overrideValues = templateOrOverride;
  }
  const built = template ? Object.assign({}, template) : {};
  const builder = new Proxy(
    {},
    {
      get(target, prop) {
        if ("build" === prop) {
          if (overrideValues) {
            Object.assign(built, overrideValues);
          }
          if (type) {
            const obj = new type();
            return () => Object.assign(obj, { ...built });
          } else {
            return () => built;
          }
        }
        return (...args) => {
          if (0 === args.length) {
            return built[prop.toString()];
          }
          built[prop.toString()] = args[0];
          return builder;
        };
      }
    }
  );
  return builder;
}

// src/StrictBuilder.ts
function StrictBuilder() {
  const built = {};
  const strictbuilder = new Proxy(
    {},
    {
      get(target, prop) {
        if ("build" === prop) {
          return () => built;
        }
        return (...args) => {
          if (0 === args.length) {
            return built[prop.toString()];
          }
          built[prop.toString()] = args[0];
          return strictbuilder;
        };
      }
    }
  );
  return strictbuilder;
}
export {
  Builder,
  StrictBuilder
};
//# sourceMappingURL=index.mjs.map