Version 8 [Draft]

[willfarrell]

Version 8

• Drop Node v22, Add support fro Node v24

  • Update engines to "node": ">=24"
  • Update GitHub Actions workflows NODE_VERSION and node-version
  • update "@types/node": "^24.0.0"
  • update GitHub ruleset for main

• docs

  • Add docs/upgrade/7-8.md
  • update docs/intro/09-release cycle.md

• Use new RegExp.escape function in routers (https://nodejs.org/en/blog/release/v24.0.0)

• Use new URLPattern function in routers (https://nodejs.org/en/blog/release/v24.0.0) - 67x slower - skipping

• Drop references to callback in core ([FEEDBACK REQUEST] Should AWS Lambda deprecate callback-style function handlers for Node.js 24 and later? aws/aws-lambda-nodejs-runtime-interface-client#137)

• Deprecate @middy/do-not-wait-for-empty-event-loop. context.callbackWaitsForEmptyEventLoop and context.lambdaContext.callbackWaitsForEmptyEventLoop will no longer be used. (Deprecate context.callbackWaitsForEmptyEventLoop? aws/aws-lambda-nodejs-runtime-interface-client#177)

• node26 runtime (Lambda managed runtime for Node.js 26 aws/aws-lambda-roadmap#56, https://aws.amazon.com/blogs/compute/introducing-public-preview-runtimes-on-aws-lambda-starting-with-node-js-26-and-python-3-15/)

• core

  • remove err.originalError
  • Add in check for DuarbaleContext, throw error instead of triggering onError (update event-batch-* that have this check)

• http-error-handler all logger access to request

• Update middleware that need access to before context to use a new pattern

  • Use the package name as the key within a middy context
  • { ...request.context, middy: { 'pkg':{} }
  • s3-object-response
  • http-content-negotiation

• split input-output-logger into event-logger and response-logger

  • move omit logic to util
  • have all logger with same shape

• Update to use AggregateError pattern where better suited

• sts update RoleSessionName to use randomUUID

Maybe

• improve response streaming support (new middlewares?)
• plugins as packages?
• Move to JSDoc notation? https://www.youtube.com/watch?v=zPOHY-cZ1wE
• Update abort signals if Lambda adds support

Moved to v9

• Deprecate Report-To, default to Reporting-Endpoints (NEL still requires Report-To)

[willfarrell]

node26 is now in preview, draft PR of v8 is now live for review