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fix: adds check forReflect.getOwnMetadataKeys #305

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Jan 24, 2019
Merged

fix: adds check forReflect.getOwnMetadataKeys #305

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5 changes: 4 additions & 1 deletion src/reflect.ts
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Original file line number Diff line number Diff line change
@@ -1,7 +1,10 @@
import Vue, { VueConstructor } from 'vue'
import { VueClass } from './declarations'

export const reflectionIsSupported = typeof Reflect !== 'undefined' && Reflect.defineMetadata
// The rational behind the verbose Reflect-feature check below is the fact that there are polyfills
// which add an implementation for Reflect.defineMetadata but not for Reflect.getOwnMetadataKeys.
// Without this check consumers will encounter hard to track down runtime errors.
export const reflectionIsSupported = typeof Reflect !== 'undefined' && Reflect.defineMetadata && Reflect.getOwnMetadataKeys

export function copyReflectionMetadata (
to: VueConstructor,
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