[Gradle, JS] Move suppress gson null issue for particular fields

[Gradle, JS] Fix package json creation from existed package json w/o version

[Gradle, JS] Add task for publishing package json

[Gradle, JS] Add skip on empty npm dependencies

[Gradle, JS] Publishing package json with installed modules

[Gradle, JS] Add publishingPackageJson for compilation npm resolution

[Gradle, JS] Add publishingPackageJson to jar task

[Gradle, JS] PublishingPackageJsonTask now in jar

[Gradle, JS] Actual skipping of package json creation

[Gradle, JS] jar task depends only on main publishing package json

[Gradle, JS] Move calculation of packageJson

[Gradle, JS] Filter file dependencies

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

@@ -1,6 +1,6 @@
 /*
- * Copyright 2010-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
- * that can be found in the license/LICENSE.txt file.
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
 package org.jetbrains.kotlin.gradle.targets.js.npm
@@ -39,8 +39,11 @@ internal class GradleNodeModuleBuilder(
     fun rebuild(): File? {
         if (files.isEmpty()) return null
 
-        val packageJson = fromSrcPackageJson(srcPackageJsonFile)
-            ?: PackageJson(dependency.moduleName, dependency.moduleVersion)
+        val packageJson = fromSrcPackageJson(srcPackageJsonFile)?.apply {
+            // Gson set nulls reflectively no matter on default values and non-null types
+            @Suppress("USELESS_ELVIS")
+            version = version ?: dependency.moduleVersion
+        } ?: PackageJson(dependency.moduleName, dependency.moduleVersion)
 
         val jsFiles = files.filter { it.name.endsWith(".js") }
         if (jsFiles.size == 1) {

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

@@ -1,6 +1,6 @@
 /*
- * Copyright 2010-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
- * that can be found in the license/LICENSE.txt file.
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
 package org.jetbrains.kotlin.gradle.targets.js.npm
@@ -127,6 +127,9 @@ data class NpmDependency(
     override fun getReason(): String? = reason
 }
 
+internal fun String.isFileVersion() =
+    startsWith(FILE_VERSION_PREFIX)
+
 internal fun fileVersion(directory: File): String =
     "$FILE_VERSION_PREFIX${directory.canonicalPath}"
 

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

@@ -64,6 +64,15 @@ open class NpmProject(val compilation: KotlinJsCompilation) {
     val externalsDir: File
         get() = externalsDirRoot.resolve("src")
 
+    val publicPackageJson: File
+        get() = project.buildDir
+            .resolve("tmp")
+            .resolve(publicPackageJsonTaskName)
+            .resolve(PACKAGE_JSON)
+
+    val publicPackageJsonTaskName: String
+        get() = compilation.disambiguateName(PublicPackageJsonTask.NAME)
+
     internal val modules = NpmProjectModules(dir)
 
     private val rootNodeModules: NpmProjectModules?

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

@@ -1,6 +1,6 @@
 /*
- * Copyright 2010-2019 JetBrains s.r.o. Use of this source code is governed by the Apache 2.0 license
- * that can be found in the license/LICENSE.txt file.
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
 package org.jetbrains.kotlin.gradle.targets.js.npm
@@ -10,8 +10,7 @@ import com.google.gson.GsonBuilder
 import org.jetbrains.kotlin.gradle.internal.ensureParentDirsCreated
 import java.io.File
 
-// Gson set nulls reflective no matter on default values and non-null types
-@Suppress("USELESS_ELVIS")
+// Gson set nulls reflectively no matter on default values and non-null types
 class PackageJson(
     var name: String,
     var version: String
@@ -32,18 +31,23 @@ class PackageJson(
 
     var workspaces: Collection<String>? = null
 
+    @Suppress("USELESS_ELVIS")
     val devDependencies = mutableMapOf<String, String>()
         get() = field ?: mutableMapOf()
 
+    @Suppress("USELESS_ELVIS")
     val dependencies = mutableMapOf<String, String>()
         get() = field ?: mutableMapOf()
 
+    @Suppress("USELESS_ELVIS")
     val peerDependencies = mutableMapOf<String, String>()
         get() = field ?: mutableMapOf()
 
+    @Suppress("USELESS_ELVIS")
     val optionalDependencies = mutableMapOf<String, String>()
         get() = field ?: mutableMapOf()
 
+    @Suppress("USELESS_ELVIS")
     val bundledDependencies = mutableListOf<String>()
         get() = field ?: mutableListOf()
 
@@ -76,4 +80,51 @@ class PackageJson(
 fun fromSrcPackageJson(packageJson: File?): PackageJson? =
     packageJson?.reader()?.use {
         Gson().fromJson(it, PackageJson::class.java)
-    }
+    }
+
+fun packageJson(
+    npmProject: NpmProject,
+    npmDependencies: Collection<NpmDependency>
+): PackageJson {
+    val compilation = npmProject.compilation
+
+    val packageJson = PackageJson(
+        npmProject.name,
+        fixSemver(compilation.target.project.version.toString())
+    )
+
+    packageJson.main = npmProject.main
+
+    val dependencies = mutableMapOf<String, String>()
+
+    npmDependencies.forEach {
+        val module = it.key
+        dependencies[it.key] = chooseVersion(dependencies[module], it.version)
+    }
+
+    npmDependencies.forEach {
+        val dependency = dependencies.getValue(it.key)
+        when (it.scope) {
+            NpmDependency.Scope.NORMAL -> packageJson.dependencies[it.key] = dependency
+            NpmDependency.Scope.DEV -> packageJson.devDependencies[it.key] = dependency
+            NpmDependency.Scope.OPTIONAL -> packageJson.optionalDependencies[it.key] = dependency
+            NpmDependency.Scope.PEER -> packageJson.peerDependencies[it.key] = dependency
+        }
+    }
+
+    compilation.packageJsonHandlers.forEach {
+        it(packageJson)
+    }
+
+    return packageJson
+}
+
+// TODO: real versions conflict resolution
+private fun chooseVersion(oldVersion: String?, newVersion: String): String {
+    // https://yarnpkg.com/lang/en/docs/dependency-versions/#toc-x-ranges
+    if (oldVersion == "*") {
+        return newVersion
+    }
+
+    return oldVersion ?: newVersion
+}

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

@@ -0,0 +1,102 @@
+/*
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
+ */
+
+package org.jetbrains.kotlin.gradle.targets.js.npm
+
+import org.gradle.api.DefaultTask
+import org.gradle.api.tasks.Input
+import org.gradle.api.tasks.Nested
+import org.gradle.api.tasks.OutputFile
+import org.gradle.api.tasks.TaskAction
+import org.jetbrains.kotlin.gradle.targets.js.nodejs.NodeJsRootExtension
+import java.io.File
+import javax.inject.Inject
+
+open class PublicPackageJsonTask
+@Inject
+constructor(
+    private val nodeJs: NodeJsRootExtension,
+    private val npmProject: NpmProject
+) : DefaultTask() {
+
+    private val compilationResolution
+        get() = nodeJs.npmResolutionManager.requireInstalled()[project][npmProject.compilation]
+
+    @get:Nested
+    internal val externalDependencies: Collection<NestedNpmDependency>
+        get() = compilationResolution.externalNpmDependencies
+            .map {
+                NestedNpmDependency(
+                    scope = it.scope,
+                    name = it.name,
+                    version = it.version
+                )
+            }
+
+    private val realExternalDependencies: Collection<NpmDependency>
+        get() = compilationResolution.externalNpmDependencies
+
+    @Input
+    var skipOnEmptyNpmDependencies: Boolean = false
+
+    @get:OutputFile
+    val packageJson: File
+        get() = npmProject.publicPackageJson
+
+    @TaskAction
+    fun resolve() {
+        packageJson(npmProject, realExternalDependencies).let { packageJson ->
+            if (skipOnEmptyNpmDependencies && packageJson.skipRequired()) {
+                return
+            }
+
+            packageJson.apply {
+                listOf(
+                    dependencies,
+                    peerDependencies,
+                    optionalDependencies
+                ).forEach { it.processDependencies() }
+            }
+
+            packageJson.devDependencies.clear()
+
+            packageJson.saveTo(npmProject.publicPackageJson)
+        }
+    }
+
+    private fun MutableMap<String, String>.processDependencies() {
+        val newDependencies = mutableMapOf<String, String>()
+        filterNot { (_, version) -> version.isFileVersion() }
+            .forEach { (key, version) ->
+                newDependencies[key] = version
+            }
+
+        clear()
+
+        newDependencies.forEach { (key, version) ->
+            this[key] = version
+        }
+    }
+
+    private fun PackageJson.skipRequired() =
+        dependencies.isEmpty() &&
+                peerDependencies.isEmpty() &&
+                optionalDependencies.isEmpty() &&
+                optionalDependencies.isEmpty() &&
+                bundledDependencies.isEmpty()
+
+    companion object {
+        const val NAME = "publicPackageJson"
+    }
+}
+
+internal data class NestedNpmDependency(
+    @Input
+    val scope: NpmDependency.Scope,
+    @Input
+    val name: String,
+    @Input
+    val version: String
+)

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 

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

@@ -1,5 +1,5 @@
 /*
- * Copyright 2010-2019 JetBrains s.r.o. and Kotlin Programming Language contributors.
+ * Copyright 2010-2020 JetBrains s.r.o. and Kotlin Programming Language contributors.
  * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
  */
 
@@ -14,6 +14,8 @@ import org.gradle.api.initialization.IncludedBuild
 import org.gradle.api.internal.artifacts.DefaultProjectComponentIdentifier
 import org.gradle.api.tasks.Input
 import org.gradle.api.tasks.InputFiles
+import org.gradle.api.tasks.TaskProvider
+import org.gradle.api.tasks.bundling.Zip
 import org.jetbrains.kotlin.gradle.plugin.KotlinCompilation
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinJsCompilation
 import org.jetbrains.kotlin.gradle.plugin.mpp.KotlinUsages
@@ -21,11 +23,11 @@ import org.jetbrains.kotlin.gradle.plugin.mpp.disambiguateName
 import org.jetbrains.kotlin.gradle.plugin.usesPlatformOf
 import org.jetbrains.kotlin.gradle.targets.js.ir.KotlinJsIrTarget
 import org.jetbrains.kotlin.gradle.targets.js.npm.*
-import org.jetbrains.kotlin.gradle.targets.js.npm.NpmDependency.Scope.*
 import org.jetbrains.kotlin.gradle.targets.js.npm.NpmProject.Companion.PACKAGE_JSON
 import org.jetbrains.kotlin.gradle.targets.js.npm.plugins.CompilationResolverPlugin
 import org.jetbrains.kotlin.gradle.targets.js.npm.resolved.KotlinCompilationNpmResolution
 import org.jetbrains.kotlin.gradle.targets.js.npm.tasks.KotlinPackageJsonTask
+import org.jetbrains.kotlin.gradle.tasks.registerTask
 import org.jetbrains.kotlin.gradle.utils.CompositeProjectComponentArtifactMetadata
 import org.jetbrains.kotlin.gradle.utils.`is`
 import org.jetbrains.kotlin.gradle.utils.topRealPath
@@ -45,6 +47,26 @@ internal class KotlinCompilationNpmResolver(
     val target get() = compilation.target
     val project get() = target.project
     val packageJsonTaskHolder = KotlinPackageJsonTask.create(compilation)
+
+    val publicPackageJsonTaskHolder: TaskProvider<PublicPackageJsonTask> =
+        project.registerTask<PublicPackageJsonTask>(
+            npmProject.publicPackageJsonTaskName,
+            listOf(nodeJs, npmProject)
+        ) {
+            it.skipOnEmptyNpmDependencies = true
+            it.dependsOn(nodeJs.npmInstallTask)
+            it.dependsOn(packageJsonTaskHolder)
+        }.also { packageJsonTask ->
+            if (compilation.name == KotlinCompilation.MAIN_COMPILATION_NAME) {
+                project.tasks
+                    .withType(Zip::class.java)
+                    .named(npmProject.target.artifactsTaskName)
+                    .configure {
+                        it.from(packageJsonTask)
+                    }
+            }
+        }
+
     val plugins: List<CompilationResolverPlugin> = projectResolver.resolver.plugins.flatMap {
         it.createCompilationResolverPlugins(this)
     }
@@ -301,13 +323,11 @@ internal class KotlinCompilationNpmResolver(
             }
                 .filterNotNull()
 
-            val packageJson = PackageJson(
-                npmProject.name,
-                fixSemver(project.version.toString())
+            val packageJson = packageJson(
+                npmProject,
+                externalNpmDependencies
             )
 
-            packageJson.main = npmProject.main
-
             compositeDependencies.forEach {
                 packageJson.dependencies[it.name] = it.version
             }
@@ -320,23 +340,6 @@ internal class KotlinCompilationNpmResolver(
                 packageJson.dependencies[it.name] = fileVersion(it.path)
             }
 
-            val dependencies = mutableMapOf<String, String>()
-
-            externalNpmDependencies.forEach {
-                val module = it.key
-                dependencies[it.key] = chooseVersion(dependencies[module], it.version)
-            }
-
-            externalNpmDependencies.forEach {
-                val dependency = dependencies.getValue(it.key)
-                when (it.scope) {
-                    NORMAL -> packageJson.dependencies[it.key] = dependency
-                    DEV -> packageJson.devDependencies[it.key] = dependency
-                    OPTIONAL -> packageJson.optionalDependencies[it.key] = dependency
-                    PEER -> packageJson.peerDependencies[it.key] = dependency
-                }
-            }
-
             compilation.packageJsonHandlers.forEach {
                 it(packageJson)
             }
@@ -366,15 +369,5 @@ internal class KotlinCompilationNpmResolver(
                 ?.map { it.resolve(PACKAGE_JSON) }
                 ?: emptyList()
         }
-
-        // TODO: real versions conflict resolution
-        private fun chooseVersion(oldVersion: String?, newVersion: String): String {
-            // https://yarnpkg.com/lang/en/docs/dependency-versions/#toc-x-ranges
-            if (oldVersion == "*") {
-                return newVersion
-            }
-
-            return oldVersion ?: newVersion
-        }
     }
 }