[Gradle, JS] Use .meta.js as source of "name" and "main" fields

^KT-40342 fixed

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/npm/GradleNodeModuleBuilder.kt

@@ -7,6 +7,9 @@ package org.jetbrains.kotlin.gradle.targets.js.npm
 
 import org.gradle.api.Project
 import org.gradle.api.artifacts.ResolvedDependency
+import org.jetbrains.kotlin.gradle.targets.js.JS
+import org.jetbrains.kotlin.gradle.targets.js.JS_MAP
+import org.jetbrains.kotlin.gradle.targets.js.META_JS
 import org.jetbrains.kotlin.gradle.targets.js.ir.KLIB_TYPE
 import java.io.File
 
@@ -19,8 +22,8 @@ internal class GradleNodeModuleBuilder(
     val srcFiles: Collection<File>,
     val cache: GradleNodeModulesCache
 ) {
-    var srcPackageJsonFile: File? = null
-    val files = mutableListOf<File>()
+    private var srcPackageJsonFile: File? = null
+    private val files = mutableListOf<File>()
 
     fun visitArtifacts() {
         srcFiles.forEach { srcFile ->
@@ -45,19 +48,22 @@ internal class GradleNodeModuleBuilder(
             version = version ?: dependency.moduleVersion
         } ?: PackageJson(dependency.moduleName, dependency.moduleVersion)
 
-        val jsFiles = files.filter { it.name.endsWith(".js") }
-        if (jsFiles.size == 1) {
-            val jsFile = jsFiles.single()
-            packageJson.name = jsFile.nameWithoutExtension
-            packageJson.main = jsFile.name
+        val metaFiles = files.filter { it.name.endsWith(".$META_JS") }
+        if (metaFiles.size == 1) {
+            val metaFile = metaFiles.single()
+            val name = metaFile.name.removeSuffix(".$META_JS")
+            packageJson.name = name
+            packageJson.main = "${name}.js"
         }
 
         // yarn requires semver
         packageJson.version = fixSemver(packageJson.version)
 
+        val actualFiles = files.filterNot { it.name.endsWith(".$META_JS") }
+
         return makeNodeModule(cache.dir, packageJson) { nodeModule ->
             project.copy { copy ->
-                copy.from(files)
+                copy.from(actualFiles)
                 copy.into(nodeModule)
             }
         }
@@ -73,6 +79,6 @@ private val File.isCompatibleArchive
 private fun isKotlinJsRuntimeFile(file: File): Boolean {
     if (!file.isFile) return false
     val name = file.name
-    return (name.endsWith(".js") && !name.endsWith(".meta.js"))
-            || name.endsWith(".js.map")
+    return name.endsWith(".$JS")
+            || name.endsWith(".$JS_MAP")
 }

libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/utils.kt

@@ -21,3 +21,8 @@ fun Appendable.appendConfigsFromDir(confDir: File) {
             appendln()
         }
 }
+
+
+const val JS = "js"
+const val JS_MAP = "js.map"
+const val META_JS = "meta.js"