@serverless-guy/lambda

A small lambda wrapper that lets you write cleaner and maintainable lambda function

Version 3.x focuses on removing stuffs that does not make sense and providing a little bit "lambda"-ish familiarity.

Status

Installation

You can start by installing this library using the command below:

npm i --save @serverless-guy/lambda

Basic Usage

In the example below, the handler would log the event first, then context. Afterwards, it will return the event as response.

import { wrapper } from "@serverless-guy/lambda";

export const handler = wrapper(function someHandler(event, context, response) {

  console.log(event);
  console.log(context);

  return response(event);
});

Using custom response function

import { wrapper } from "@serverless-guy/lambda";

export const handler = wrapper(function someHandler(event, context, response) {
  console.log(event);
  console.log(context);

  return response(event);
});

handler.setResponseFunction(customResponseTemplate);

function customResponseTemplate(data, statusCode = 200, headers = {}) {
    // do something
    data.returnedOn = new Date();

    return {
    body: JSON.stringify(data),
    headers: {
      "Access-Control-Allow-Origin": "*",
      ...headers
    },
    statusCode
  };
}

Using custom error response function

import { wrapper } from "@serverless-guy/lambda";
 
export const handler = wrapper(function someHandler(event, context, response) {
  console.log(event);
  console.log(context);

  return response(event);
});

handler.setCatchFunction(customCatchResponseTemplate);

function customCatchResponseTemplate(error, event, context, responseFunction) {
  const errorResponseObject = {
    errorCode:    error.name,
    errorMessage: error.message
  };

  return response(errorResponseObject, 418); /** I'm a f***ing teapot */
}

Check out our documentation page to see more examples.