This document outlines our focused tasks for TypeScript 4.5. It minimally indicates intent to investigate tasks or contribute to an implementation. Nothing is set in stone, but we will strive to complete these tasks in a reasonable timeframe.

Language and Compiler Features

• module: node12
• @types/web
• Import Assertions
• Flag to Disable Import Elision
• Private Field Presence Checks
• lib.d.ts Updates
• Investigate Shared Node/DOM types

Editor Productivity

• Editor Grammar Errors in JavaScript Files
• Improved JavaScript Editing Using package.json
• Inline Values API for Debugging
• Investigate Snippet Completions
• Differentiating Definitions from References
• Enable Automatic Type Acquisition in Web Contexts
• Events for Requesting More Files
• Welcome Page Contributions in Visual Studio Code
• Create New TypeScript Workspace in Visual Studio Code
• Continue Enabling the Language Server Protocol (LSP)
• Commit Characters in Server API

Performance

• Supporting Additional Trace Points
• Profiling/Tracing Mode Improvements
• Investigate Tooling for JIT Deoptimizations
• Use fs.realpathSync.native

Infrastructure

• Migrate to Modules
• Expand Perf Suite
• Fuzzer Improvements and Addressing Crashes
• Improving User Suite Reports

Website

• Landing Page Redesign
• Migrate to Static Web Apps

DefinitelyTyped

• Empowering Discussions on DefinitelyTyped
• @types/web Integration and Testing