GraphQL queries with $ variables break plugin functionality in non-JS contexts

[eezy0]

Issue Description

While js-graphql-intellij-plugin was originally designed for JavaScript/TypeScript, it's also used as a foundation for other GraphQL plugins like the DGS IntelliJ Plugin (which supports Java/Kotlin). We've identified an issue where the plugin's functionality breaks when handling GraphQL queries containing $ variables within Kotlin string literals.

Related DGS Plugin Issue

I've also reported this issue in the DGS IntelliJ Plugin repository since it's directly affected:
Netflix/dgs-intellij-plugin#114

Current Behavior

When writing GraphQL queries in Kotlin string literals that include variable declarations (e.g., ${'$'}filter: FilterInput!), the plugin fails to:

• Provide proper syntax highlighting
• Offer code completion
• Validate against schema

This appears to be a core functionality issue in the base plugin that affects derived implementations like the DGS plugin.

Example

val query = """
    query GetItems(${'$'}filter: FilterInput!) {
        items(filter: ${'$'}filter) {
            id
            name
        }
    }
""".trimIndent()

Expected Behavior

The plugin should properly parse and process GraphQL queries containing variable declarations in non-JavaScript contexts (particularly in Kotlin string literals), maintaining all functionality regardless of the presence of $ symbols.

Since this plugin serves as a foundation for other language-specific GraphQL plugins (like the DGS plugin for Java/Kotlin), resolving this issue at the core level would benefit the broader GraphQL plugin ecosystem in IntelliJ-based IDEs.

[vepanimas]

Hi @eezy0! This should be already fixed in WEB-68137, and it will be available with 2025.2 IDEs update.