javascript - 问一个ts的问题，怎么通过两个枚举合并生成另外一个枚举？

Question

权限码时有模块枚举和权限枚举共同组成的，比如：

enum PermModuleCodeEnum {  EnterpriseTenant = 'enterpriseTenant',  EnterpriseIncoming = 'enterpriseIncoming',  EnterpriseIncoming1 = 'enterpriseIncoming1',}type PremCode = 'Add' | 'Disable' | 'Edit'function createPerCodes<T extends string>(union: T[], module: PermModuleCodeEnum): { [K in T]: `${PermModuleCodeEnum}:${K}` } {  return union.reduce((pre, cur) => ({ ...pre, [cur]: `${module}:${cur}` }), {} as { [K in T]: `${PermModuleCodeEnum}:${K}` });}const perCodes = createPerCodes<PremCode>(['Add', 'Disable', 'Edit'], PermModuleCodeEnum.EnterpriseTenant);console.log('xxx-1', perCodes);此时此时的 perCodes为 {    Add: "enterpriseTenant:Add" | "enterpriseIncoming:Add" | "enterpriseIncoming1:Add";    Disable: "enterpriseTenant:Disable" | "enterpriseIncoming:Disable" | "enterpriseIncoming1:Disable";    Edit: "enterpriseTenant:Edit" | "enterpriseIncoming" | "enterpriseIncoming1:Edit";}而不是{    Add: "enterpriseTenant:Add";    Disable: "enterpriseTenant:Disable";    Edit: "enterpriseTenant:Edit";}

怎样才能修复createPerCodes的类型定义呢

Answer 1

type PermModuleCodeEnum = 'enterpriseTenant' | 'enterpriseIncoming' | 'enterpriseIncoming1';type PremCode = 'Add' | 'Disable' | 'Edit';type PermissionCode<M extends string, P extends string> = `${M}:${P}`;function createPerCodes<M extends string, P extends string>(  permissions: P[],  module: M): { [K in P]: PermissionCode<M, K> } {  return permissions.reduce((pre, cur) => ({ ...pre, [cur]: `${module}:${cur}` }), {} as { [K in P]: PermissionCode<M, K> });}const perCodes = createPerCodes(['Add', 'Disable', 'Edit'], 'enterpriseTenant');

GPT回答的。没验证过。你试试

Answer 2

enum PermModuleCodeEnum {  EnterpriseTenant = 'enterpriseTenant',  EnterpriseIncoming = 'enterpriseIncoming',  EnterpriseIncoming1 = 'enterpriseIncoming1',}type PremCode = 'Add' | 'Disable' | 'Edit';function createPerCodes<T extends string, M extends PermModuleCodeEnum>(union: T[], module: M): { [K in T]: `${M}:${K}` } {  return union.reduce((pre, cur) => ({ ...pre, [cur]: `${module}:${cur}` }), {} as { [K in T]: `${M}:${K}` });}const perCodes = createPerCodes<PremCode, typeof PermModuleCodeEnum.EnterpriseTenant>(['Add', 'Disable', 'Edit'], PermModuleCodeEnum.EnterpriseTenant);console.log('xxx-1', perCodes);