Reflection

Lightweight ES Module implementation of reflect-metadata to work with TypeScript's experimental decorator support.

Why?

The main reason for this library is to provide a much smaller implementation that can be included as a module.

• ES module
  • reflection can be loaded with <script type="module" src="..."></script>
• Size (uncompressed)
  • reflect-metadata is ~50K
  • core-js/es7/reflect is ~80K
  • @abraham/reflection is ~3K

Read about how to drop 20K from your production Angular app by switching to this.

Install

npm install @abraham/reflection

Usage

import'@abraham/reflection';Reflect.defineMetadata(metadataKey,metadataValue,target);

You can also import Reflection:

import{ReflectionasReflect}from'@abraham/reflection';Reflect.defineMetadata(metadataKey,metadataValue,target);

API

Reflection does not currently cover the complete API surface of reflect-metadata. The following methods are available:

Reflect.decorate(...);Reflect.defineMetadata(...);Reflect.getMetadata(...);Reflect.hasMetadata(...);Reflect.getOwnMetadata(...);Reflect.hasOwnMetadata(...);Reflect.metadata(...);