serverless.yml

service: ES6Lambda
app: es6-lambda-slack
#frameworkVersion: '>=1.28.0 <2.0.0'

# serverless-webpack configuration
# Enable auto-packing of external modules
custom:
  # API Endpoint
  api_url_path: sky-api
  webpack:
    webpackConfig: ./webpack.config.js 
    includeModules: true

provider:
  name: aws
  runtime: nodejs10.x
  stage: dev
  region: us-east-1

functions:
  app:
    handler: index.handler
    events:
      - http: ANY /
      - http: 'ANY {proxy+}'
      - http:
          path: ${self:custom.api_url_path}
          method: any
          integration: lambda
          request:
            template:
              application/json: '{
  "method": "$context.httpMethod",
  "body" : $input.json(''$''),
  "headers": {
    "$param": "$util.escapeJavaScript($input.params().header.get($param))"
  },
  "queryParams": {
    "$param": "$util.escapeJavaScript($input.params().querystring.get($param))"
  },
  "pathParams": {
    "$param": "$util.escapeJavaScript($input.params().path.get($param))"
  }  
}'
              application/x-www-form-urlencoded: '{
  "method": "$context.httpMethod",
  "body" : $input.json(''$''),
  "headers": {
    "$param": "$util.escapeJavaScript($input.params().header.get($param))"
  },
  "queryParams": {
    "$param": "$util.escapeJavaScript($input.params().querystring.get($param))"
  },
  "pathParams": {
    "$param": "$util.escapeJavaScript($input.params().path.get($param))"
  }  
}'
          response:
            template: $input.json('$')
          cors: true

plugins:
  - serverless-offline
  # Use the serverless-webpack plugin to transpile ES6
  - serverless-webpack

# serverless optimization
package:
  individually: true