esbuild & AWS Lambda

gistfile1.txt

// script
import {
  DynamoDBClient,
  UpdateItemCommand,
  paginateScan
} from '@aws-sdk/client-dynamodb';

async function updateItem(dynamodb, id) {
  return dynamodb.send(new UpdateItemCommand({
    TableName: 'table-name',
    Key: {
      id: {S: id}
    },
    UpdateExpression: 'REMOVE attr1',
    ConditionExpression: 'attribute_exists(id)'
  }));
}

async function run() {
  const dynamodb = new DynamoDBClient({
    region: 'us-east-1',
    apiVersion: '2012-08-10'
  });
  const config = {
    client: dynamodb,
    pageSize: 10
  };
  const input = {
    TableName: 'table-name'
  };
  const paginator = paginateScan(config, input);
  for await (const page of paginator) {
    await Promise.all(page.Items.map(item => 
      updateItem(dynamodb, item.id.S)));
  }
}

run().then(() => {
  console.log('done'); // eslint-disable-line no-console
});



// esbuild.js (or esbuild.cjs) file

const esbuild = require('esbuild');

// if you have more than one handler run this in a loop for every handler
esbuild.buildSync({
  entryPoints: ['handler1.js'],
  bundle: true,
  platform: 'node',
  external: ['aws-sdk'],
  // minify: true,
  target: ['node12'],
  outfile: 'build/handler1/bundle.js'
});
  
  
  
// in your CloudFormation/SAM template
Function:
  Type: 'AWS::Serverless::Function'
  Properties:
    CodeUri: 'build/handler1'
    Handler: 'bundle.handler'