amplify-lambda-invoke.js

import { LambdaClient, InvokeCommand } from '@aws-sdk/client-lambda'

/**
 * Invoke our Lambda function with a payload
 * @param {Object.<string, any>} payload
 * @returns {Promise<import('@aws-sdk/client-lambda').InvokeCommandOutput>}
 */
async function invoke(payload) {
  /** @type {import('@aws-sdk/client-lambda').LambdaClient} */
  const client = new LambdaClient({ region: process.env.REGION })

  /** @type {import('@aws-sdk/client-lambda').InvokeCommandInput} */
  const input = {
    FunctionName: process.env.FUNCTION_MYAMPLIFY_FUNCTION_NAME,
    Payload: JSON.stringify(payload),
    InvocationType: 'Event',
  }

  /** @type {import('@aws-sdk/client-lambda').Command} */
  const command = new InvokeCommand(input)

  /** @type {import('@aws-sdk/client-lambda').InvokeCommandOutput} */
  const output = await client.send(command)

  return output
}