• BREAKING: Drop support for Node.js 16. Minimum supported version is now Node.js 18. (#1747)
• BREAKING: Remove deprecated functions.config() API. Use params module for environment variables instead. (#1748)
• BREAKING: Upgrade to TypeScript v5 and target ES2022. (#1746)
• BREAKING: Unhandled errors in async onRequest handlers in the Emulator now return a 500 error immediately. (#1755)
• Add support for ESM (ECMAScript Modules) alongside CommonJS. (#1750)
• Add onMutationExecuted() trigger for Firebase Data Connect. (#1727)
• BREAKING: Rename v1 Event to LegacyEvent to avoid api-extractor conflict. (#1767)