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TypeScript 4.0 Iteration Plan · Issue #38510 · microsoft/TypeScript · GitHub
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PlanningIteration plans and roadmappingIteration plans and roadmapping
Description
This document outlines our focused tasks for TypeScript 4.0, as well as some of the discussion that explains how/why we prioritized certain work items. Nothing is set in stone, but we will strive to complete them in a reasonable timeframe.
| Date | Event |
|---|---|
| May 12th | TypeScript 3.9 Release (past) |
| June 22nd | Create 4.0 Beta (4.0.0) Build for Testing |
| June 25th | TypeScript 4.0 Beta Release |
| July 31st | Create 4.0 RC (4.0.1) Build for Testing |
| August 6th | TypeScript 4.0 RC Release |
| August 14th | Create 4.0 Final (4.0.2) Build for Testing |
| August 20th | TypeScript 4.0 Final Release 🚀 |
Language Features
- Short-Circuiting Assignment Operators
- Labeled Tuple Elements
- Class Property Inference from Constructors
- Forward Declarations
- Investigate the
awaitedType - JSX Factory Updates
unknownoncatchClause Bindings- Variadic Tuples
Editor Productivity
- Refactorings
- Discoverability in Refactoring (ideas)
- Lightweight Navigation
- Improved Auto-Import
- Editor support for
/** @deprecated */tags - Editor support for
/** @see */tags - Semantic Highlighting
Performance
- More Type-Checking Optimizations
- Investigate Bottlenecks in Larger Apps
Infrastructure
- Migrate TypeScript to Modules
- Expand Commands Tested in TSServer Crawler
- GitHub Crawler Infrastructure to Find Breaking Changes
Investigate High-Demand Bug Fixes
RyanCavanaugh, tonivj5, LeanKhan, ulrichb, ppbl and 121 moreAyfri, mlukasik-dev, swarthy, fvilante, gio-built and 1 moreZQ-jhon, Bnaya, alansongzoom, Genarito, artemjackson and 14 moreitsMapleLeaf, shilangyu, gentoid, ahtcx, Niaro and 44 moreiagobruno, tonivj5, andoshin11, pickypg, Simonpedro and 48 moreiagobruno, tonivj5, neilbryson, RobbieGM, tony-scio and 29 more
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PlanningIteration plans and roadmappingIteration plans and roadmapping
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