Incompatible Changes in IntelliJ Platform and Plugins API 2025.*

IntelliJ Platform 2025.2

IntelliJ Platform 2025.1

Code scheduled with SwingUtilities.invokeLater and SwingUtilities.invokeAndWait does not hold the write-intent lock

Consider using an explicit wrapping with ReadAction.compute() or WriteAction.run(ThrowableRunnable<E>). See Threading Model.

Coroutines running under Dispatchers.Main do not hold the write-intent lock

To restore the old behavior, consider using Dispatchers.EDT. See Threading Model.

com.intellij.psi.xml.XmlTokenType class now interface

Use XmlTokenType constants directly.

Class com.intellij.psi.xml.XmlElementType no longer extends com.intellij.psi.xml.XmlTokenType

Update code usages.

filetype.xml.description property removed from resource bundle messages.XmlPsiBundle

Use property from resource bundle messages.XmlParserBundle

xml.parsing.closing.tag.matches.nothing property removed from resource bundle messages.XmlPsiBundle

Use property from resource bundle messages.XmlParserBundle

xml.parsing.unclosed.attribute.value property removed from resource bundle messages.XmlPsiBundle

Use property from resource bundle messages.XmlParserBundle

xml.parsing.unescaped.ampersand.or.nonterminated.character.entity.reference property removed from resource bundle messages.XmlPsiBundle

Use property from resource bundle messages.XmlParserBundle

External System 2025.1

com.intellij.openapi.externalSystem.service.internal.ExternalSystemProcessingManager class now interface

Recompile code usages.

Kotlin Plugin 2025.1

org.jetbrains.kotlin.KtFakeSourceElement class renamed to org.jetbrains.kotlin.KtFakePsiSourceElement

Update code usages.

org.jetbrains.kotlin.ir.linkage.IrDeserializer.IrLinkerExtension class removed

This class was removed from the Kotlin compiler and is no longer available.

org.jetbrains.kotlin.ir.builders.TranslationPluginContext class removed

This class was removed from the Kotlin compiler and is no longer available.

org.jetbrains.kotlin.analysis.decompiler.stub.file.ClsClassFinder.isKotlinInternalCompiledFile$default(ClsClassFinder, VirtualFile, byte[], int, Object) method removed

Recompile code usages.

Remote Development 2025.1

com.jetbrains.rd.ide.model.AddToGroupRuleModel class removed

Remove all usages.

com.jetbrains.rd.ide.model.ActionConstraintModel class removed

Remove all usages.

JavaScript and TypeScript Plugin 2025.1

com.intellij.lang.javascript.service.JSAsyncLanguageServiceBase.JSLanguageServiceInfoReporter class moved to package com.intellij.lang.javascript.service

Update all usages

com.intellij.lang.javascript.JSElementTypes.toModuleContentType(IElementType type) method removed

Use com.intellij.lang.javascript.JSModuleContentType.toModuleContentType(IElementType type) method instead

com.intellij.lang.javascript.BaseJSTokenTypes class removed

Use com.intellij.lang.javascript.JSTokenTypes class instead

com.intellij.lang.javascript.highlighting.TypeScriptHighlighter(DialectOptionHolder dialectOptionsHolder, boolean skipKeywordHighlights) constructor removed

Use constructor without skipKeywordHighlights parameter

com.intellij.lang.javascript.dialects.ECMA6SyntaxHighlighterFactory.ECMA6SyntaxHighlighter(DialectOptionHolder dialectOptionsHolder, boolean skipKeywordHighlights) constructor removed

Use constructor without skipKeywordHighlights parameter

com.intellij.lang.javascript.highlighting.JSHighlighter(DialectOptionHolder dialectOptionsHolder, boolean skipKeywordHighlights) constructor removed

Use constructor without skipKeywordHighlights parameter