lambda-spawn

Run lambda function as child process.

Installation

npm i lambda-spawn

Usage

const {
  INVOKE_RESULT,
  spawnLambda,
} = require('lambda-spawn');

const options = {
  handler: 'index.handler',
  moduleDir: 'path/to/lambda',
};

const lambdaProcess = spawnLambda(options, event, context);

lambdaProcess.on(INVOKE_RESULT, ({ result }) => {
});

API

spawnLambda(options, event, context)

• options.arn
  • An ARN that identify a lambda process.
• options.dir
  • A current directory of the lambda process.
  • Default: process.cwd()
• options.handler
  • Names of a module and a function.
  • Default: index.handler
• options.env
  • An object of environment variables that is used to launch a lambda process.
  • Default: process.env
• options.lambdaEnv
  • An object of environment variables that is used as the lambda configuration.
  • This object is merged to options.env.
• options.moduleDir
  • A path of a directory that the lambda function is located.
• options.typescript
  • If this option is truthy, ts-node is used to launch a lambda process.
• event
  • An event object that is used to invoke the lambda function.
• context
  • A context object that is used to invoke the lambda function.

LambdaProcess

Properties

• arn
  • An ARN that is passed to spawnLambda.

Event: lambda.INVOKE_RESULT

The lambda.INVOKE_RESULT event is emitted when the lambda function returns the result.

This event passes a message object to a listener. The message object has following properties:

• err
  • An Error object when the lambda function returns an error.
• result
  • A result that is returned by the lambda function.

License

MIT