ts-compiler-errors

Documentation on TypeScript's compiler errors, including a guide on how to fix them.

Contributing

Please do!

• When you first install the repo, data/diagnosticMessages.json will be downloaded from the TypeScript repo. If you want to update it later, run node scripts/fetch_messages.js.
• To build run yarn build. This will create dist/bundle.js. You should then be able to open index.html in the root directory in your web browser to view changes locally.
• You can link to different errors with ?code=123
• Code snippets should use 2 spaces for indentation, without semicolons.

Problematic errors

Many TypeScript errors include contextual information that is unique to the code which causes the error. TypeScript includes this information in {0} sections in the documentation. I try to include a representative example of the error, but as these errors are generic, it is easy to miss a case in which they trigger. Please open an issue if the documentation doesn't include a sample which is similar to your problem.

Some errors I haven't been able to figure out how to trigger, along with the code I expected to trigger the error, so they cannot be documented. If you can cause one of these, please open an issue!

• TS1012 - Incredibly generic...
• TS1020 - { [a: string = 'a']: any }
• TS1022 - { [a]: any }
• TS1041 - No longer used
• TS1043 - No longer used
• TS1045 - No longer used
• TS1057 - No longer used
• TS1059 - Couldn't trigger
• TS1060 - Couldn't trigger
• TS1097 - Very generic.
• TS1100 - No longer used