Greek Alphabet enum

[frederikhors]

Which packages are impacted by your issue?

@graphql-codegen/core (I think)

Describe the bug

I have this enum in a graphql schema:

enum Versions {
    α
    β
    γ
    δ
    μ
}

running the graphql code generator I get this error:

> graphql-codegen --config graphql.config.yml

[STARTED] Parse Configuration
[SUCCESS] Parse Configuration
[STARTED] Generate outputs
[STARTED] Generate to ./types.ts
[STARTED] Load GraphQL schemas
[FAILED]
[FAILED]         Failed to load schema from ./schema.graphql:
[FAILED]
[FAILED]         Syntax Error: Unexpected character: U+03B1.
[FAILED]         GraphQLError: Syntax Error: Unexpected character: U+03B1.
[FAILED]     at syntaxError (C:\prj\node_modules\[email protected]\node_modules\graphql\error\syntaxError.js:15:10)
[FAILED]     at readNextToken (C:\prj\node_modules\[email protected]\node_modules\graphql\language\lexer.js:420:40)
[FAILED]     at Lexer.lookahead (C:\prj\node_modules\[email protected]\node_modules\graphql\language\lexer.js:84:29)
[FAILED]     at Lexer.advance (C:\prj\node_modules\[email protected]\node_modules\graphql\language\lexer.js:67:38)
[FAILED]     at Parser.advanceLexer (C:\prj\node_modules\[email protected]\node_modules\graphql\language\parser.js:1536:31)
[FAILED]     at Parser.expectToken (C:\prj\node_modules\[email protected]\node_modules\graphql\language\parser.js:1393:12)
[FAILED]     at Parser.parseName (C:\prj\node_modules\[email protected]\node_modules\graphql\language\parser.js:108:24)
[FAILED]     at Parser.parseEnumValueName (C:\prj\node_modules\[email protected]\node_modules\graphql\language\parser.js:1009:17)
[FAILED]     at Parser.parseEnumValueDefinition (C:\prj\node_modules\[email protected]\node_modules\graphql\language\parser.js:981:23)
[FAILED]     at Parser.optionalMany (C:\prj\node_modules\[email protected]\node_modules\graphql\language\parser.js:1492:28)
[FAILED]
[FAILED]         GraphQL Code Generator supports:
[FAILED]           - ES Modules and CommonJS exports (export as default or named export "schema")
[FAILED]           - Introspection JSON File
[FAILED]           - URL of GraphQL endpoint
[FAILED]           - Multiple files with type definitions (glob expression)
[FAILED]           - String in config file
[FAILED]
[FAILED]         Try to use one of above options and run codegen again.

Is there a workaround?

Platform

• OS: Windows
• NodeJS: 20.18.0
• graphql version: 16.9.0

"@graphql-codegen/cli": "5.0.3",
"@graphql-codegen/typed-document-node": "5.0.10",
"@graphql-codegen/typescript": "4.1.0",
"@graphql-codegen/typescript-operations": "4.3.0",