Merge pull request #21 from DavidWells/claude/issue-20-20250830-1624

🤖 Claude Code: Update all examples to modern runtime and ESM

Author: DavidWells

_instructor/core-concepts/1-http-hello-world/README.md

@@ -5,6 +5,7 @@ This lesson will walk through creating a basic function triggered by a http GET
 <!-- AUTO-GENERATED-CONTENT:START (TOC) -->
 - [Lesson Steps](#lesson-steps)
 - [Complete code](#complete-code)
+- [Additional Resources](#additional-resources)
 <!-- AUTO-GENERATED-CONTENT:END -->
 
 ## Lesson Steps

_instructor/core-concepts/1-http-hello-world/handler.js

@@ -1,5 +1,5 @@
 
-module.exports.hello = (event, context, callback) => {
+export const hello = (event, context) => {
   // WORKSHOP_START
   /* Step 1. In this_file, Create a `200` response code and return the `event` data in the response body.
 
@@ -8,7 +8,7 @@ module.exports.hello = (event, context, callback) => {
     For more details, see the http event docs link http://bit.ly/2mkgV4P
   */
   const response = {}
-  return callback(null, response);
+  return response;
   // WORKSHOP_END
   // FINAL_START
   const response = {
@@ -19,7 +19,6 @@ module.exports.hello = (event, context, callback) => {
       event: event,
     }),
   }
-  /** callback(error, response) */
-  return callback(null, response)
+  return response
   // FINAL_END
 }

_instructor/core-concepts/1-http-hello-world/serverless.yml

@@ -3,7 +3,7 @@ service: my-first-service
 
 provider:
   name: aws
-  runtime: nodejs12.x
+  runtime: nodejs22.x
 
 functions:
   hello:

_instructor/core-concepts/2-http-dynamic-content/handler.js

@@ -6,15 +6,15 @@
 
     Finally remember to set the headers of the response as `'Content-Type': 'text/html'` to return HTML instead of the default `json`
  */
-module.exports.queryParamsExample = (event, context, callback) => {
+export const queryParamsExample = (event, context) => {
   // WORKSHOP_START
   const response = {
     statusCode: 200,
     body: JSON.stringify({
       message: 'Hi ⊂◉‿◉つ',
     }),
   }
-  return callback(null, response)
+  return response
   // WORKSHOP_END
   // FINAL_START
   let name
@@ -24,13 +24,13 @@ module.exports.queryParamsExample = (event, context, callback) => {
   /* generate the hello paragraph */
   const helloParagraph = greetPerson(name)
 
-  return callback(null, {
+  return {
     statusCode: 200,
     headers: {
       'Content-Type': 'text/html',
     },
     body: generateHtmlPage(helloParagraph),
-  })
+  }
   // FINAL_END
 }
 
@@ -42,15 +42,15 @@ module.exports.queryParamsExample = (event, context, callback) => {
 
     Finally, remember to set the headers of the response as `'Content-Type': 'text/html'` to return HTML instead of the default `json`
  */
-module.exports.pathParamsExample = (event, context, callback) => {
+export const pathParamsExample = (event, context) => {
   // WORKSHOP_START
   const response = {
     statusCode: 200,
     body: JSON.stringify({
       message: 'Hi ⊂◉‿◉つ',
     }),
   }
-  return callback(null, response)
+  return response
   // WORKSHOP_END
   // FINAL_START
   let name
@@ -61,14 +61,14 @@ module.exports.pathParamsExample = (event, context, callback) => {
   /* generate the hello paragraph */
   const helloParagraph = greetPerson(name)
 
-  // callback is sending HTML back
-  return callback(null, {
+  // return is sending HTML back
+  return {
     statusCode: 200,
     headers: {
       'Content-Type': 'text/html',
     },
     body: generateHtmlPage(helloParagraph),
-  })
+  }
   // FINAL_END
 }
 

_instructor/core-concepts/2-http-dynamic-content/serverless.yml

@@ -3,7 +3,7 @@ service: using-dynamic-value
 
 provider:
   name: aws
-  runtime: nodejs12.x
+  runtime: nodejs22.x
 
 functions:
   queryParamsExample:

_instructor/core-concepts/3-http-post-with-cors/README.md

@@ -13,6 +13,7 @@ This lesson will walk through creating an http function triggered by a `POST` re
 <!-- AUTO-GENERATED-CONTENT:START (TOC) -->
 - [Lesson Steps](#lesson-steps)
 - [Complete code](#complete-code)
+- [Locking down cors to a specific domain](#locking-down-cors-to-a-specific-domain)
 <!-- AUTO-GENERATED-CONTENT:END -->
 
 ## Lesson Steps

_instructor/core-concepts/3-http-post-with-cors/handler.js

@@ -6,7 +6,7 @@
     For additional information, see the cors docs http://bit.ly/2FlFSWB
 */
 // WORKSHOP_END
-module.exports.functionWithCors = (event, context, callback) => {
+export const functionWithCors = (event, context) => {
   const response = {
     statusCode: 200,
     // FINAL_START
@@ -22,5 +22,5 @@ module.exports.functionWithCors = (event, context, callback) => {
       event: event,
     }),
   }
-  return callback(null, response)
+  return response
 }

_instructor/core-concepts/3-http-post-with-cors/serverless.yml

@@ -3,7 +3,7 @@ service: using-http-cors-example
 
 provider:
   name: aws
-  runtime: nodejs12.x
+  runtime: nodejs22.x
 
 functions:
   hello:

_instructor/core-concepts/4-using-env-vars/handler.js

@@ -8,7 +8,7 @@
     Return the environment variable in the `foo` function response
 */
 // WORKSHOP_END
-module.exports.foo = (event, context, callback) => {
+export const foo = (event, context) => {
   // FINAL_START
   console.log('process.env.MY_ENV_VAR', process.env.MY_ENV_VAR)
   /* MY_ENV_VAR_FOR_BAR will be undefined */
@@ -31,7 +31,7 @@ module.exports.foo = (event, context, callback) => {
       // FINAL_END
     }),
   }
-  return callback(null, response)
+  return response
 }
 
 // WORKSHOP_START
@@ -42,7 +42,7 @@ module.exports.foo = (event, context, callback) => {
     Return the environment variable in the `bar` function response
 */
 // WORKSHOP_END
-module.exports.bar = (event, context, callback) => {
+export const bar = (event, context) => {
   // FINAL_START
   /* both env variables will be accessible in bar */
   console.log('process.env.MY_ENV_VAR', process.env.MY_ENV_VAR)
@@ -66,5 +66,5 @@ module.exports.bar = (event, context, callback) => {
       // FINAL_END
     }),
   }
-  return callback(null, response)
+  return response
 }

_instructor/core-concepts/4-using-env-vars/serverless.yml

@@ -6,7 +6,7 @@ service: using-env-variables-example
 # WORKSHOP_END
 provider:
   name: aws
-  runtime: nodejs12.x
+  runtime: nodejs22.x
   # FINAL_START
   environment:
     MY_ENV_VAR: 'hello there'