Tag: error

Sep 19, 2023 · best practices

Fix type X is not assignable to type Y

When working with optional parameters in TypeScript, you may encounter the error message "undefined cannot be assigned to a specific type." This happens because optional parameters can either be `undefined` or of a specified type. To avoid this error, you can use several techniques.

Jun 4, 2020 · hands on

Error TS2307: Cannot find module events

If you're extending the `EventEmitter` class from Node.js and encounter the error TS2307 or TS2339, it means you're missing the Node.js type definitions. To fix this, install the typings by running `yarn add @types/node@12 --dev --tilde`. This solution has been tested with TypeScript 3.9.3 and Node.js 12.18.0 LTS.