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TypeScript 4.2 Iteration Plan #41601
Description
This document outlines our focused tasks for TypeScript 4.2, 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 |
|---|---|
| November 19th | TypeScript 4.1 Release |
| January 8th | Create 4.2 Beta (4.2.0) Build for Testing |
| January 12th | TypeScript 4.2 Beta Release |
| February 5th | Create 4.2 RC (4.2.1) Build for Testing |
| February 9th | TypeScript 4.2 RC Release |
| February 19th | Create 4.2 Final (4.2.2) Build for Testing |
| February 23rd | TypeScript 4.2 Final Release 🚀 |
Language Features
- Generalized index signatures
- Leading/middle rest elements in tuple types
--noImplicitOverride--noPropertyAccessFromIndexSignaturestaticIndex Signatures- Investigate
typeof class - Review the project setup experience
- Investigate faster compile-time iteration
Editor Productivity
- Declare missing helper function
- Enable running TSServer in a worker thread
- Anticipated bug fixes and UX improvements for partial semantic mode
- Investigate high-confidence "did you mean?" in JS
Performance
Infrastructure
- Perf Regression Tracking
- Committing Scripts to Repo
- Integrate into Release Activities
- Perf Suite Reliability
Activity
jogibear9988 commentedon Nov 27, 2020
Is there a way to suggest issues/tasks for a TS release?
DanielRosenwasser commentedon Nov 30, 2020
Vote on existing issues, or file a new one if one doesn't already exist. We do pay attention to a few of the nudges in these threads, but really discourage people from turning the entire thread into a discussion point for a single feature.
x87 commentedon Dec 7, 2020
https://www.typescriptlang.org/ shows the next version as 4.1, and the link points here:
RyanCavanaugh commentedon Dec 7, 2020
cc Orta Therox (@orta) re that
ExE-Boss commentedon Dec 7, 2020
This file needs fixing: https://github.com/microsoft/TypeScript-Website/blob/v2/packages/typescriptlang-org/src/lib/release-plan.json (the latest commit only updated the dates and the URL: microsoft/TypeScript-Website@cc80197)
RyanCavanaugh commentedon Dec 7, 2020
Thanks for the quick pointer ExE Boss (@ExE-Boss), I've fixed it
orta commentedon Dec 11, 2020
Thanks folks!
orta commentedon Dec 11, 2020
Linking the lib DOM changes issue: microsoft/TypeScript-DOM-lib-generator#960
DanielRosenwasser commentedon Jan 6, 2021
Heads up, lots of people are just coming back from vacation, so we'll be releasing the beta next week instead.
DanielRosenwasser commentedon Jan 10, 2021
TypeScript Bot (@typescript-bot) create release-4.2
typescript-bot commentedon Jan 10, 2021
Heya Daniel Rosenwasser (@DanielRosenwasser), I've started to create the
release-4.2branch for you. Here's the link to my best guess at the log.DanielRosenwasser commentedon Jan 10, 2021
Looks like the "origin types" PR (#42149) has broken the baselines, which is making tests fail.
DanielRosenwasser commentedon Jan 10, 2021
TypeScript Bot (@typescript-bot) create release-4.2
13 remaining items
longlho commentedon Feb 17, 2021
Can #42134 be revised/reverted please?
DanielRosenwasser commentedon Feb 20, 2021
TypeScript Bot (@typescript-bot) bump release-4.2
typescript-bot commentedon Feb 20, 2021
Heya Daniel Rosenwasser (@DanielRosenwasser), I've started to update the version number on
release-4.2to4.2.2for you. Here's the link to my best guess at the log.DanielRosenwasser commentedon Mar 3, 2021
TypeScript Bot (@typescript-bot) bump release-4.2
typescript-bot commentedon Mar 3, 2021
Heya Daniel Rosenwasser (@DanielRosenwasser), I've started to update the version number on
release-4.2to4.2.3for you. Here's the link to my best guess at the log.Jack-Works commentedon Mar 5, 2021
Reverse link to 4.3 iteration plan #42762 (mentioned from 4.3 iteration plan won't send mail to people who subscribed to 4.2 iteration plan)
DanielRosenwasser commentedon Apr 5, 2021
TypeScript Bot (@typescript-bot) bump release-4.2
typescript-bot commentedon Apr 5, 2021
Heya Daniel Rosenwasser (@DanielRosenwasser), I've started to update the version number on
release-4.2to4.2.4for you. Here's the link to my best guess at the log.aslatter commentedon Apr 8, 2021
FYI - it looks like NPM has a version 4.2.4, but GitHub doesn't have a tag v4.2.4 or a release for 4.2.4.
brad4d commentedon Apr 9, 2021
Can we expect to have a
v4.2.4defined by 2021-04-12, or is more time needed before that can happen?Within Google we're anxious to get the fix for JSDoc annotations getting copied to overloads.
It's causing spurious deprecation warnings for our users.
We need an official
v4.2.4tag so we can upgrade.Thanks.
orta commentedon Apr 9, 2021
Bradford C. Smith (@brad4d) shipped - https://github.com/microsoft/TypeScript/releases/tag/v4.2.4
longlho commentedon Apr 10, 2021
Can I get #42945 in as well?