From e3c291db27937b5d85d229a28b613d94f20cf30b Mon Sep 17 00:00:00 2001
From: Ilya Goncharov <ilya.goncharov@jetbrains.com>
Date: Thu, 10 Jun 2021 15:31:33 +0300
Subject: [PATCH] [Gradle, JS] Not rewrite package.json if json was not changed

---
 .../gradle/targets/js/npm/PackageJson.kt       | 18 +++++++++++-------
 .../YarnImportedPackagesVersionResolver.kt     |  1 -
 .../gradle/targets/js/yarn/YarnWorkspaces.kt   |  1 +
 3 files changed, 12 insertions(+), 8 deletions(-)

diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/npm/PackageJson.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/npm/PackageJson.kt
index 89b5ccca396..5e72b6d88b1 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/npm/PackageJson.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/npm/PackageJson.kt
@@ -5,12 +5,8 @@
 
 package org.jetbrains.kotlin.gradle.targets.js.npm
 
-import com.google.gson.ExclusionStrategy
-import com.google.gson.FieldAttributes
-import com.google.gson.Gson
-import com.google.gson.GsonBuilder
+import com.google.gson.*
 import org.gradle.api.GradleException
-import org.gradle.api.tasks.Input
 import org.jetbrains.kotlin.gradle.internal.ensureParentDirsCreated
 import java.io.File
 import java.io.Serializable
@@ -109,13 +105,21 @@ class PackageJson(
 
         packageJsonFile.ensureParentDirsCreated()
         val jsonTree = gson.toJsonTree(this)
+        val previous = if (packageJsonFile.exists()) {
+            packageJsonFile.reader().use {
+                JsonParser.parseReader(it)
+            }
+        } else null
+
         customFields
             .forEach { (key, value) ->
                 val valueElement = gson.toJsonTree(value)
                 jsonTree.asJsonObject.add(key, valueElement)
             }
-        packageJsonFile.writer().use {
-            gson.toJson(jsonTree, it)
+        if (jsonTree != previous) {
+            packageJsonFile.writer().use {
+                gson.toJson(jsonTree, it)
+            }
         }
     }
 }
diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/yarn/YarnImportedPackagesVersionResolver.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/yarn/YarnImportedPackagesVersionResolver.kt
index 431c4f5c390..13ae3a7ab75 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/yarn/YarnImportedPackagesVersionResolver.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/yarn/YarnImportedPackagesVersionResolver.kt
@@ -6,7 +6,6 @@
 package org.jetbrains.kotlin.gradle.targets.js.yarn
 
 import com.google.gson.Gson
-import org.gradle.api.Project
 import org.gradle.api.logging.Logger
 import org.jetbrains.kotlin.gradle.targets.js.npm.GradleNodeModule
 import org.jetbrains.kotlin.gradle.targets.js.npm.NpmProject
diff --git a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/yarn/YarnWorkspaces.kt b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/yarn/YarnWorkspaces.kt
index cbb79fc0fac..d26053b96d2 100644
--- a/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/yarn/YarnWorkspaces.kt
+++ b/libraries/tools/kotlin-gradle-plugin/src/main/kotlin/org/jetbrains/kotlin/gradle/targets/js/yarn/YarnWorkspaces.kt
@@ -5,6 +5,7 @@
 
 package org.jetbrains.kotlin.gradle.targets.js.yarn
 
+import com.google.gson.Gson
 import org.gradle.api.Project
 import org.gradle.api.logging.Logger
 import org.gradle.internal.service.ServiceRegistry