Using types with Typescript and Webpack can cause compatibility issues

I am dealing with a simple class

export default class Scott {
  hello() {
    let color: string = "blue";
    return true;
  }
}

But running Webpack 4 results in this error message: ERROR in ./src/js/test.ts Module parse failed: Unexpected token (3:17) An appropriate loader may be needed to handle this file type.

Changing the code from "let" to let color = "blue"; allows it to work. Every time I attempt to add a type, I encounter the unexpected token issue.

Do I need to include something specific in the tsconfig file to resolve this?

Answer №1

Ensure that your webpack configuration includes a Typescript loader to properly handle .ts files.

Consider using either ts-loader or awesome-typescript-loader.

Both options provide instructions on integrating them into your webpack setup.

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