Reflect-Metadata doesn't work with WebPack 3 Scope Hoisting

I tried reporting this to the WebPack team and they said it is a problem with Reflect-Metadata.

I'm using Reflect-Metadata in a TypeScript project that's being built and bundled with WebPack 3. When I add the scope hoisting plugin to my WebPack config, the project no longer runs properly.

I get the following error:
Uncaught TypeError: Reflect.hasOwnMetadata is not a function
at injectable.js:7
at Object.__decorate [as a] (tslib.es6.js:48)
at Object../client/app/app.bootstrap.ts (data.service.ts:4)
at webpack_require (bootstrap 1856459e76a82a034076:54)
at webpackJsonpCallback (bootstrap 1856459e76a82a034076:25)
at app.js:1
(anonymous) @ injectable.js:7
__decorate @ tslib.es6.js:48
./client/app/app.bootstrap.ts @ data.service.ts:4
webpack_require @ bootstrap 1856459e76a82a034076:54
webpackJsonpCallback @ bootstrap 1856459e76a82a034076:25
(anonymous) @ app.js:1

Is there a way to make it work, or can this problem be fixed?

Start by reproducing the TypeError with Webpack 3 scope hoisting and inspect the generated bundle around injectable.js and the Reflect-Metadata initialization. Compare the module path with tslib.es6.js and app.bootstrap.ts/data.service.ts; done means the project runs with scope hoisting while Reflect.hasOwnMetadata remains available.