lamdbaToExpress - lamdbaToExpress.js

lamdbaToExpress.js

// Convert from a Lambda to an ExpressJS handler
const lambdaToExpress = async (handler) => {
  return async (req, res) => {
    // Repackage the express parameters as an event object for the Lambda
    const event = {
      body: JSON.stringify(req.body),
      headers: req.headers,
      queryStringParameters: req.query,
      pathParameters: req.params
    };

    const handlerRes = await handler(event);

    // Instruct express to use the response from the Lambda 
    res.status(handlerRes.statusCode).json(JSON.parse(handlerRes.body))
  };
}

export default lambdaToExpress;