Can you please show how to add cors() to a compose chain?

[dbartholomae]

Can you please show how to add cors() to a compose chain?

[dbartholomae]

Thanks! What's the problem you run into?

[drmikecrowe]

I'm seeing stuff like this:

    TypeError: Cannot read properties of undefined (reading 'toLowerCase')
      20 |   async (event: APIGatewayEvent, context: Context): Promise<APIGatewayProxyResult> => {
      21 |     logger('Running handler')
    > 22 |     const response = await handler(event, context)
         |                            ^
      23 |     logger('Response received')
      24 |     if (response === undefined) {
      25 |       logger('Undefined response, returning statusCode 204')
      at node_modules/@lambda-middleware/cors/src/cors.ts:38:26

[dbartholomae]

The line with the error is the line that calls your handler, so the error might be related to the handler. Could you please share a small repo with the error with the full context including a handler? Thanks! :)

[github-actions]

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