[Gradle, JS] Fix NpmRange string representation with concrete version

^KT-42222 fixed
^KT-40986 fixed
^KT-39838 fixed

libraries/tools/kotlin-gradle-plugin-integration-tests/src/test/kotlin/org/jetbrains/kotlin/gradle/Kotlin2JsGradlePluginIT.kt

@@ -609,7 +609,10 @@ abstract class AbstractKotlin2JsGradlePluginIT(private val irBackend: Boolean) :
                     val packageJson = Gson().fromJson(it, PackageJson::class.java)
                     val devDep = "42"
                     val devDepVersion = "0.0.1"
-                    assertTrue("There is expected dev dependency \"$devDep\": \"$devDepVersion\" in package.json") {
+                    assertTrue(
+                        "Dev dependency \"$devDep\": \"$devDepVersion\" in package.json expected, but actual:\n" +
+                                "${packageJson.devDependencies}"
+                    ) {
                         val devDependencies = packageJson.devDependencies
                         devDependencies
                             .containsKey(devDep) &&
@@ -618,7 +621,10 @@ abstract class AbstractKotlin2JsGradlePluginIT(private val irBackend: Boolean) :
 
                     val dep = "@yworks/optimizer"
                     val depVersion = "1.0.6"
-                    assertTrue("There is expected dependency \"$dep\": \"$depVersion\" in package.json") {
+                    assertTrue(
+                        "Dependency \"$dep\": \"$depVersion\" in package.json expected, but actual:\n" +
+                                "${packageJson.dependencies}"
+                    ) {
                         val dependencies = packageJson.dependencies
                         dependencies
                             .containsKey(dep) &&
@@ -627,7 +633,10 @@ abstract class AbstractKotlin2JsGradlePluginIT(private val irBackend: Boolean) :
 
                     val peerDep = "date-arithmetic"
                     val peerDepVersion = "4.1.0"
-                    assertTrue("There is expected peer dependency \"$peerDep\": \"$peerDepVersion\" in package.json") {
+                    assertTrue(
+                        "Peer dependency \"$peerDep\": \"$peerDepVersion\" in package.json expected, but actual:\n" +
+                                "${packageJson.peerDependencies}"
+                    ) {
                         val peerDependencies = packageJson.peerDependencies
                         peerDependencies
                             .containsKey(peerDep) &&

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

@@ -21,8 +21,30 @@ data class NpmRange(
     val endVersion: SemVer? = null,
     val endInclusive: Boolean = false
 ) {
-    override fun toString(): String =
+    override fun toString(): String {
-        "${if (startVersion != null) "${if (startInclusive) GTEQ else GT}$startVersion" else ""} ${if (endVersion != null) "${if (endInclusive) LTEQ else LT}$endVersion" else ""}"
+        if (startVersion == endVersion && startInclusive && endInclusive) {
+            return startVersion.toString()
+        }
+
+        val start = if (startVersion != null)
+            "${if (startInclusive) GTEQ else GT}$startVersion"
+        else
+            ""
+
+        val end = if (endVersion != null)
+            "${if (endInclusive) LTEQ else LT}$endVersion"
+        else
+            ""
+
+        return if (start.isEmpty())
+            end
+        else {
+            if (end.isEmpty())
+                start
+            else
+                "$start $end"
+        }
+    }
 
     override fun equals(other: Any?): Boolean {
         if (this === other) return true