Overview

Fixes skeleton file discovery in SkeletonCollector for projects using the BridgeJS build plugin workflow.

Since commit 91d2f06, BridgeJSTool writes skeleton files to destination/BridgeJS/JavaScript/BridgeJS.json, but PackageToJS was searching in destination/BridgeJS/BridgeJS.json (missing the JavaScript/ subdirectory).

Issue

Projects using the BridgeJS build plugin for automatic code generation fail to produce bridge-js.js because PackageToJS cannot find the skeleton files:

# Build plugin outputs to:
.build/plugins/outputs/[pkg]/[target]/destination/BridgeJS/JavaScript/BridgeJS.json

# PackageToJS searched in:
.build/plugins/outputs/[pkg]/[target]/destination/BridgeJS/BridgeJS.json

This results in HAS_BRIDGE=false and stub implementations in instantiate.js.

Example

A project using the build plugin workflow:

// Package.swift
.executableTarget(
    name: "MyApp",
    dependencies: ["JavaScriptKit"],
    swiftSettings: [
        .enableExperimentalFeature("Extern")
    ],
    plugins: [
        .plugin(name: "BridgeJS", package: "JavaScriptKit")  // Using build plugin
    ]
)

// Sources/MyApp/Greeter.swift
@JS(namespace: "MyApp")
public enum Greeter {
    @JS
    public static func hello(name: String) -> String {
        return "Hello, \(name)!"
    }
}

When building with swift package js, the skeleton is generated but not discovered, resulting in missing exports in bridge-js.js.

Root Cause

When the unified generate subcommand was introduced in 91d2f06, the output path was changed to include JavaScript/ subdirectory, but only one of the two search paths in SkeletonCollector was updated:

• ✅ Path 1 (source directory): target.directoryURL/Generated/JavaScript - works for command plugin / pre-generated files
• ❌ Path 2 (build output): destination/BridgeJS - missing /JavaScript

Fix

Add /JavaScript to the second search path to match the actual output location.

Testing

Tested with a project using the BridgeJS build plugin workflow. After the fix, bridge-js.js is correctly generated with exported functions at the specified namespace.