### What kind of issue is this? - [x] React Compiler core (the JS output is incorrect, or your app works incorrectly after optimization) - [ ] babel-plugin-react-compiler (build issue installing or using the Babel plugin) - [ ] eslint-plugin-react-hooks (build issue installing or using the eslint plugin) - [ ] react-compiler-healthcheck (build issue installing or using the healthcheck script) ### Link to repro https://playground.react.dev/#N4Igzg9grgTgxgUxALhAMygOzgFwJYSYAEAYhBABQCURwAOsUQORRgJEC2CHETDRRGAhyxiAQxgwAdBzEAHCtSIBeAHxEK-AUQBG5ADZEAZEY1btRADw7V5i1YAaRAPS3G9ojgQAPHHYGWzjZ2VFpUVADcDAC+DCAANCBwhGh4AOYoIPSMdCAImABueDCEXJh+KLR2ufliOvoIAFJg3gDyUDj6eJjdabnInjBQCFqxmNEJ4AAWEADuAJLlCDCYYvpgKGhrbNFAA ### Repro steps I wanna use compiler option ```js { "environment": { "enableJsxOutlining": true } } ``` but can't build my app due ``` Todo: (CodegenReactiveFunction::codegenInstructionValue) Cannot declare variables in a value block, tried to declare 't33' ``` ### How often does this bug happen? Every time ### What version of React are you using? 19 ### What version of React Compiler are you using? latest