graphql-codegen-client-preset doesn't respect codegen.ts namingConvention

[tombryden]

Describe the bug
The graphql-codegen-client-preset plugin doesn't respect codegen.ts namingConvention field. It always capitalizes the first character.

The default for client-preset is PascalCase which was causing some of the imports post-swc to not match.

To workaround this you can set the codegen.ts namingConvention to: config: { namingConvention: "change-case-all#upperCaseFirst" }

URL to minimal reproduction
https://github.com/tombryden/swc-codegen-plugin-bug

Expected behavior
Running pnpm build should succeed in the reproduction repo, but it fails with error:

Export SomeEGRocketsDocument doesn't exist in target module
The export SomeEGRocketsDocument was not found in module [project]/src/gql/graphql.ts [app-client] (ecmascript).
Did you mean to import SomeEgRocketsDocument?

This is because the default for client preset in codegen.ts is PascalCase, causing swc's SomeEGRocketsDocument import not to match the codegen SomeEgRocketsDocument.

You can uncomment the line in codegen.ts and run pnpm codegen then pnpm build to see it working.

Additional context

fn capetalize(s: &str) -> String {

Thanks!

[kdy1]

@claude fix it

[claude]

Claude finished @kdy1's task in 6m 49s —— View job • claude/issue-521-20260321-0028 • Create PR ➔

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Fixing namingConvention support in graphql-codegen-client-preset

• Read CLAUDE.md and relevant source files
• Understand the namingConvention config and how the capitalize function works
• Implement fix to respect namingConvention config
  • Add namingConvention option to PluginOptions (defaults to "change-case-all#pascalCase")
  • Implement to_pascal_case() to match graphql-codegen's default behavior
  • Apply correct naming convention in the visitor
• Add tests for new behavior (2 new test cases)
• Update README to document the new option
• Commit and push

Root cause: The capetalize function only uppercased the first letter (upperCaseFirst behavior), but graphql-codegen's client-preset default is pascalCase which also converts word boundaries. For example, SomeEGRockets → SomeEgRocketsDocument with PascalCase vs SomeEGRocketsDocument with upperCaseFirst — causing the import mismatch.

Changes made:

• src/lib.rs: Added to_pascal_case() function implementing word-boundary splitting, apply_naming_convention() dispatcher, namingConvention field to PluginOptions (default: "change-case-all#pascalCase"), and naming_convention to GraphQLCodegenOptions
• src/tests.rs: Added two new tests — one verifying PascalCase converts SomeEGRockets → SomeEgRocketsDocument, one verifying upperCaseFirst preserves SomeEGRocketsDocument
• README.md: Documented the new namingConvention option

All 8 tests pass. Users can now set namingConvention: "change-case-all#upperCaseFirst" in plugin config to match a non-default codegen.ts naming convention.