serverless-offline-lambda-invoke/proxy.js

A Serverless Offline plugin that exposes lambdas with no API Gateway event via HTTP, to allow offline direct lambda-to-lambda interactions.

const serializeError = require('serialize-error');
const path = require('path');

function handler(event, context, callback) {
	const [targetHandlerFile, targetHandlerFunction] = event.targetHandler.split('.');
	const target = require(path.resolve(__dirname, '../..', targetHandlerFile));

	target[targetHandlerFunction](event.body, context, (error, response) => {
		if (error) {
			// Return Serverless error to AWS sdk
			callback(null, {
				StatusCode: 500,
				FunctionError: 'Handled',
				Payload: serializeError(error)
			});
		} else {
			// Return lambda function response to AWS SDK & pass through args from serverless.
			callback(null, response);
		}
	});
}

module.exports.handler = handler;