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    @keenondrums/metadata-utils
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    1.0.1 • Public • Published

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    Convenience utils for reflected metadata.

    Installation

    1. Run

      npm i @keenondrums/metadata-utils reflect-metadata
    2. Add import 'reflect-metadata' to the root of your application

    API

    getMetadataAndCache

    Gets metadata from the prototype (using Relect.getMetadata) and sets it as own metadata. Useful to enhance performance for retrieving metadata from ancestors. Has the same signature as Relect.getMetadata.

    import 'reflect-metadata'
    import { getMetadataAndCache } from '@keenondrums/metadata-utils'
    
    class Parent {}
    Reflect.defineMetadata('key', 'value', Parent)
    
    Reflect.getOwnMetadata('key', Parent) // returns 'value'
    getMetadataAndCache('key', Parent) // returns 'value', basically calls Reflect.getOwnMetadata under the hood and does nothing else in this case
    
    class Child extends Parent {}
    
    Reflect.getOwnMetadata('key', Child) // returns `undefined` as Child doesn't have any own metadata for 'key'
    getMetadataAndCache('key', Child) // returns 'value' from Parent and set it as own metadata
    Reflect.getOwnMetadata('key', Child) // now it returns 'value'

    Install

    npm i @keenondrums/metadata-utils

    DownloadsWeekly Downloads

    5

    Version

    1.0.1

    License

    MIT

    Unpacked Size

    10.1 kB

    Total Files

    11

    Last publish

    Collaborators

    • keenondrums
    • aigoncharov