drop Metadata Reflection API

#1299

README.md

@@ -189,8 +189,6 @@ structuredClone(new Set([1, 2, 3])); // => new Set([1, 2, 3])
     - [Stage 0 proposals](#stage-0-proposals)
       - [`Function.prototype.demethodize`](#functionprototypedemethodize)
       - [`Function.{ isCallable, isConstructor }`](#function-iscallable-isconstructor-)
-    - [Pre-stage 0 proposals](#pre-stage-0-proposals)
-      - [`Reflect` metadata](#reflect-metadata)
   - [Web standards](#web-standards)
     - [`self`](#self)
     - [`structuredClone`](#structuredclone)
@@ -3120,48 +3118,6 @@ Function.isConstructor(() => {});       // => false
 Function.isConstructor(class {});       // => true
 ```
 
-#### Pre-stage 0 proposals[⬆](#index)
-[*CommonJS entry points:*](#commonjs-api)
-```js
-core-js(-pure)/stage/pre
-```
-##### [`Reflect` metadata](https://github.com/rbuckton/reflect-metadata)[⬆](#index)
-Modules [`esnext.reflect.define-metadata`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/esnext.reflect.define-metadata.js), [`esnext.reflect.delete-metadata`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/esnext.reflect.delete-metadata.js), [`esnext.reflect.get-metadata`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/esnext.reflect.get-metadata.js), [`esnext.reflect.get-metadata-keys`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/esnext.reflect.get-metadata-keys.js), [`esnext.reflect.get-own-metadata`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/esnext.reflect.get-own-metadata.js), [`esnext.reflect.get-own-metadata-keys`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/esnext.reflect.get-own-metadata-keys.js), [`esnext.reflect.has-metadata`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/esnext.reflect.has-metadata.js), [`esnext.reflect.has-own-metadata`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/esnext.reflect.has-own-metadata.js) and [`esnext.reflect.metadata`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/esnext.reflect.metadata.js).
-```js
-namespace Reflect {
-  defineMetadata(metadataKey: any, metadataValue: any, target: Object, propertyKey?: PropertyKey): void;
-  getMetadata(metadataKey: any, target: Object, propertyKey?: PropertyKey): any;
-  getOwnMetadata(metadataKey: any, target: Object, propertyKey?: PropertyKey): any;
-  hasMetadata(metadataKey: any, target: Object, propertyKey?: PropertyKey): boolean;
-  hasOwnMetadata(metadataKey: any, target: Object, propertyKey?: PropertyKey): boolean;
-  deleteMetadata(metadataKey: any, target: Object, propertyKey?: PropertyKey): boolean;
-  getMetadataKeys(target: Object, propertyKey?: PropertyKey): Array<mixed>;
-  getOwnMetadataKeys(target: Object, propertyKey?: PropertyKey): Array<mixed>;
-  metadata(metadataKey: any, metadataValue: any): decorator(target: Object, targetKey?: PropertyKey) => void;
-}
-```
-[*CommonJS entry points:*](#commonjs-api)
-```js
-core-js/proposals/reflect-metadata
-core-js(-pure)/full/reflect/define-metadata
-core-js(-pure)/full/reflect/delete-metadata
-core-js(-pure)/full/reflect/get-metadata
-core-js(-pure)/full/reflect/get-metadata-keys
-core-js(-pure)/full/reflect/get-own-metadata
-core-js(-pure)/full/reflect/get-own-metadata-keys
-core-js(-pure)/full/reflect/has-metadata
-core-js(-pure)/full/reflect/has-own-metadata
-core-js(-pure)/full/reflect/metadata
-```
-[*Examples*](https://goo.gl/KCo3PS):
-```js
-let object = {};
-Reflect.defineMetadata('foo', 'bar', object);
-Reflect.ownKeys(object);               // => []
-Reflect.getOwnMetadataKeys(object);    // => ['foo']
-Reflect.getOwnMetadata('foo', object); // => 'bar'
-```
-
 ### Web standards[⬆](#index)
 #### `self`[⬆](#index)
 [Spec](https://html.spec.whatwg.org/multipage/window-object.html#dom-self), module [`web.self`](https://github.com/zloirock/core-js/blob/master/packages/core-js/modules/web.self.js)

packages/core-js-compat/src/data.mjs

@@ -2138,33 +2138,6 @@ export const data = {
   },
   // TODO: Remove from `core-js@4`
   'esnext.promise.with-resolvers': null,
-  // TODO: Remove from `core-js@4`
-  'esnext.reflect.define-metadata': {
-  },
-  // TODO: Remove from `core-js@4`
-  'esnext.reflect.delete-metadata': {
-  },
-  // TODO: Remove from `core-js@4`
-  'esnext.reflect.get-metadata': {
-  },
-  // TODO: Remove from `core-js@4`
-  'esnext.reflect.get-metadata-keys': {
-  },
-  // TODO: Remove from `core-js@4`
-  'esnext.reflect.get-own-metadata': {
-  },
-  // TODO: Remove from `core-js@4`
-  'esnext.reflect.get-own-metadata-keys': {
-  },
-  // TODO: Remove from `core-js@4`
-  'esnext.reflect.has-metadata': {
-  },
-  // TODO: Remove from `core-js@4`
-  'esnext.reflect.has-own-metadata': {
-  },
-  // TODO: Remove from `core-js@4`
-  'esnext.reflect.metadata': {
-  },
   'esnext.regexp.escape': {
   },
   'esnext.set.add-all': {

packages/core-js/full/reflect/index.js

@@ -1,15 +1,4 @@
 'use strict';
 var parent = require('../../actual/reflect');
-require('../../modules/es.map.constructor');
-require('../../modules/es.weak-map.constructor');
-require('../../modules/esnext.reflect.define-metadata');
-require('../../modules/esnext.reflect.delete-metadata');
-require('../../modules/esnext.reflect.get-metadata');
-require('../../modules/esnext.reflect.get-metadata-keys');
-require('../../modules/esnext.reflect.get-own-metadata');
-require('../../modules/esnext.reflect.get-own-metadata-keys');
-require('../../modules/esnext.reflect.has-metadata');
-require('../../modules/esnext.reflect.has-own-metadata');
-require('../../modules/esnext.reflect.metadata');
 
 module.exports = parent;