[Gradle, JS] Use package.json files instead of pre-package.json

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

@@ -51,9 +51,6 @@ open class NpmProject(@Transient val compilation: KotlinJsCompilation) : Seriali
     val packageJsonFile: File
         get() = dir.resolve(PACKAGE_JSON)
 
-    val prePackageJsonFile: File
-        get() = dir.resolve(PRE_PACKAGE_JSON)
-
     val packageJsonTaskName: String
         get() = compilation.disambiguateName("packageJson")
 
@@ -160,7 +157,6 @@ open class NpmProject(@Transient val compilation: KotlinJsCompilation) : Seriali
 
     companion object {
         const val PACKAGE_JSON = "package.json"
-        const val PRE_PACKAGE_JSON = "pre-package.json"
         const val NODE_MODULES = "node_modules"
         const val DIST_FOLDER = "kotlin"
 

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

@@ -489,7 +489,7 @@ internal class KotlinCompilationNpmResolver(
             }
 
             if (!skipWriting) {
-                packageJson.saveTo(compilationResolver.npmProject.prePackageJsonFile)
+                packageJson.saveTo(compilationResolver.npmProject.packageJsonFile)
             }
 
             return KotlinCompilationNpmResolution(

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

@@ -80,7 +80,7 @@ open class KotlinPackageJsonTask : DefaultTask() {
 
     @get:OutputFile
     val packageJson: File by lazy {
-        compilationResolver.npmProject.prePackageJsonFile
+        compilationResolver.npmProject.packageJsonFile
     }
 
     @TaskAction