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BridgeJS: Enum export support for case / raw / empty enums#418

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Merged

kateinoigakukun merged 4 commits intoswiftwasm:mainfromPassiveLogic:feat/enum-support

Aug 22, 2025

Merged

BridgeJS: Enum export support for case / raw / empty enums#418

kateinoigakukun merged 4 commits intoswiftwasm:mainfromPassiveLogic:feat/enum-support

Aug 22, 2025

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krodak commentedAug 21, 2025

Introduction

This PR adds basic enum export support to the BridgeJS plugin.

Feature Overview

Supported Enum Types

Case Enums
Raw Value Enums
Namespace Enums - empty enums used for organizing types into hierarchical namespaces

Enum Output Styles

New@JS(enumStyle: .tsEnum) parameter allows choosing between:

.const (default): Generates const objects with union types for maximum compatibility
.tsEnum: Generates native TypeScript enum declarations (available for case enums and raw value enums with String or numeric raw types only)

Examples

Case Enum with Both Styles

@JSenumDirection{case north, south, east, west}@JS(enumStyle:.tsEnum)enumTSDirection{case north, south, east, west}

Generated TypeScript:

// Const object style (default)constDirection:{readonlyNorth:0;readonlySouth:1;readonlyEast:2;readonlyWest:3;};typeDirection=typeofDirection[keyoftypeofDirection];// If@JS(enumStyle: .tsEnum) would be definedenumTSDirection{North=0,South=1,East=2,West=3,}

Raw Value Enum

@JSenumTheme:String{case light="light"case dark="dark"case auto="auto"}

// Const object style (default)constTheme:{readonlyLight:"light";readonlyDark:"dark";readonlyAuto:"auto";};typeTheme=typeofTheme[keyoftypeofTheme];// If@JS(enumStyle: .tsEnum) would be definedenumTheme{Light="light",Dark="dark",Auto="auto",}

Namespace Enum

@JSenumNetworking{@JSenumAPI{@JSenumMethod{case getcase postcase putcase delete}        // Invalid to declare @JS(namespace) here as it would be conflicting with nesting@JSclassHTTPServer{@JSinit(){}@JSfunc call(_ method:Method)}}}// Top level enums can use namespace@JS(namespace:"Networking.APIV2")enumInternal{@JSenumSupportedMethod{case getcase post}@JSclassTestServer{@JSinit(){}@JSfunc call(_ method:SupportedMethod)}}

namespaceNetworking{namespaceAPI{classHTTPServer{constructor();call(method:Networking.API.Method):void;}constMethod:{readonlyGet:0;readonlyPost:1;readonlyPut:2;readonlyDelete:3;};typeMethod=typeofMethod[keyoftypeofMethod];}namespaceAPIV2{namespaceInternal{classTestServer{constructor();call(method:Internal.SupportedMethod):void;}constSupportedMethod:{readonlyGet:0;readonlyPost:1;};typeSupportedMethod=typeofSupportedMethod[keyoftypeofSupportedMethod];}}}

What's Not Supported

Associated value enums (will be tackled as next step)
Computed properties or methods within enums

Testing

EnumCase.swift - Case enum tests with both output styles
EnumRawType.swift - Raw value enum tests for all supported types
EnumNamespace.swift - Namespace enums with mixing same namespace as enum and@JS(namespace)