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@wymjs/enum

v1.0.1

Published

類型安全的多定義的映射物件庫

Downloads

15

Readme

@wymjs/enum

類型安全的多定義的映射物件庫

安裝

pnpm i @wymjs/enum

使用

import { createEnum } from '@wymjs/enum'

const eRole = createEnum(() => ({
  SUPER: {
    value: '1',
    level: 100,
  },
  USER: {
    value: '2',
    level: 200,
  },
  // as const 為必要,這樣才能推斷正確類型
}) as const)

eRole.getByLabel('USER', 'label') // type 與 value 皆為 'USER'
eRole.getByLabel('USER', 'value') // type 與 value 皆為 '2'
eRole.getByLabel('USER', 'level') // type 與 value 皆為 200
eRole.getByValue('1', 'label')    // type 與 value 皆為 SUPER
eRole.getByValue('1', 'level')    // type 與 value 皆為 100
eRole.getByLevel(200, 'value')    // type 與 value 皆為 2

// 也可以傳入二參更改 label 名稱
const eRole2 = createEnum(() => ({
  SUPER: {
    value: '1',
    level: 100,
  },
  USER: {
    value: '2',
    level: 200,
  },
}) as const, 'name')

// 以下 label 都被轉成 name 了
eRole2.getByName('USER', 'name')   // type 與 value 皆為 'USER'
eRole2.getByName('USER', 'value')  // type 與 value 皆為 '2'
eRole2.getByName('USER', 'level')  // type 與 value 皆為 200
eRole2.getByValue('1', 'name')     // type 與 value 皆為 SUPER
eRole2.getByValue('1', 'level')    // type 與 value 皆為 100
eRole2.getByLevel(200, 'value')    // type 與 value 皆為 2

API

const eRole = createEnum(() => ({
  SUPER: {
    value: '1',
    level: 100,
  },
  USER: {
    value: '2',
    level: 200,
  },
}) as const)

eRole.SUPER              // 原本定義的 key 都可以原封不動的取出
eRole.USER               // 同上
eRole.keys               // ['SUPER', 'USER'] 取出自己定義的 key[]
eRole.getByXXX(val, key) // XXX 為對應的子物件 key
                         // val 為對應 XXX 的子物件值
                         // key 為要取出的匹配的值