merge: Allow the browser to see the initial Kotlin source files

With this MR, the Vite plugin serves the initial Kotlin source files so the browser can find them.

With this MR, Chrome does find the initial Kotlin files, however it still doesn't refer to them in stack traces.

This is the first step towards, but not a complete solution to, #56.

See merge request opensavvy/automation/kotlin-vite!106

Author: maximegirardet

vite-base/src/main/kotlin/config/Dump.kt

@@ -9,6 +9,7 @@ fun DumpDsl.dumpViteConfig(config: ViteConfig) {
 
 		value("Root", config.root)
 		value("Base", config.base)
+		value("Public dir", config.publicDir)
 	}
 
 	section("Build") {

vite-base/src/main/kotlin/config/ViteConfig.kt

@@ -36,6 +36,7 @@ interface ViteConfig {
 		root.convention(other.root)
 		base.convention(other.base)
 		plugins.convention(other.plugins)
+		publicDir.convention(other.publicDir)
 		build.target.convention(other.build.target)
 		build.modulePreload.convention(other.build.modulePreload)
 		build.outDir.convention(other.build.outDir)
@@ -149,6 +150,15 @@ interface ViteConfig {
 		)
 	}
 
+	/**
+	 * Directory to serve as plain static assets. Files in this directory are served at `/` during dev
+	 * and copied to the root `outDir` during build, and are always served or copied as-is without transform.
+	 *
+	 * The value can be either an absolute file system path or a path relative to the project [root].
+	 */
+	@get:Internal
+	val publicDir: Property<String>
+
 	/**
 	 * Configuration for Rollup to build the production bundle.
 	 *

vite-base/src/main/kotlin/tasks/WriteConfig.kt

@@ -42,6 +42,7 @@ abstract class WriteConfig : DefaultTask() {
 		inputs.property("plugins", config.plugins)
 		inputs.property("base", config.base)
 		inputs.property("root", config.root.map { it.toString() })
+		inputs.property("publicDir", config.publicDir.orElse("false"))
 		inputs.property("build.target", config.build.target)
 		inputs.property("build.modulePreload", config.build.modulePreload)
 		inputs.property("build.outDir", config.build.outDir.map { it.toString() })
@@ -74,6 +75,7 @@ abstract class WriteConfig : DefaultTask() {
 							.joinToString(separator = ",\n                    ") { "${it.exportedAs}(${it.configuration ?: ""})" }
 					},
 				],
+				publicDir: ${config.publicDir.orNull?.let { "'$it'" } ?: false},
 				build: {
 					target: '${config.build.target.get()}',
 					modulePreload: ${config.build.modulePreload.get()},

vite-kotlin/src/main/kotlin/KotlinVitePlugin.kt

@@ -54,7 +54,7 @@ internal val Project.viteBuildProdDir: Provider<Directory>
 	get() = viteBuildDir.map { it.dir("prod") }
 
 internal val Project.viteBuildDevDir: Provider<Directory>
-	get() = viteBuildDir.map { it.dir("dev/child") } // subfolder to match the nesting of the source maps :)
+	get() = viteBuildDir.map { it.dir("dev") }
 
 /**
  * Default dist directory (override by config)

vite-kotlin/src/main/kotlin/tasks/ConfigWriter.kt

@@ -20,6 +20,7 @@ internal fun createConfigWriterTasks(project: Project) {
 
 		config {
 			root.set(project.viteBuildDevDir)
+			publicDir.convention("../../../../..")
 
 			build {
 				outDir.set(project.viteBuildDistDir)