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denoland-deno/cli/tsc
Bartek Iwańczuk 4b6305f4f2
perf(core): preserve ops between snapshots (#18080)
This commit changes the build process in a way that preserves already
registered ops in the snapshot. This allows us to skip creating hundreds of
"v8::String" on each startup, but sadly there is still some op registration
going on startup (however we're registering 49 ops instead of >200 ops). 

This situation could be further improved, by moving some of the ops 
from "runtime/" to a separate extension crates.

---------

Co-authored-by: Divy Srivastava <dj.srivastava23@gmail.com>
2023-03-18 12:51:21 +01:00
..
dts BREAKING(unstable): remove WebGPU (#18094) 2023-03-17 00:29:32 +01:00
00_typescript.js feat: support node built-in module imports (#17264) 2023-01-24 09:05:54 -05:00
99_main_compiler.js fix(check): regression where config "types" entries caused type checking errors (#18124) 2023-03-11 11:43:45 -05:00
compiler.d.ts feat: support node built-in module imports (#17264) 2023-01-24 09:05:54 -05:00
diagnostics.rs feat: Stabilize Deno.Command API (#17628) 2023-02-13 19:25:00 +01:00
mod.rs perf(core): preserve ops between snapshots (#18080) 2023-03-18 12:51:21 +01:00
README.md feat: upgrade to TypeScript 4.9.3 (#16973) 2022-12-07 12:59:59 -05:00

tsc

This directory contains the typescript compiler and a small compiler host for the runtime snapshot.

How to upgrade TypeScript.

The files in this directory are mostly from the TypeScript repository. We currently (unfortunately) have a rather manual process for upgrading TypeScript. It works like this currently:

  1. Checkout denoland/TypeScript repo in a separate directory.
  2. Add Microsoft/TypeScript as a remote and fetch its latest tags
  3. Checkout a new branch based on this tag.
  4. Cherry pick the custom commit we made in a previous release to the new one.
  5. This commit has a "deno.ts" file in it. Read the instructions in it.
  6. Copy typescript.js into Deno repo.
  7. Copy d.ts files into dts directory.
  8. Review the copied files, removing and reverting what's necessary

So that might look something like this:

git clone https://github.com/denoland/TypeScript.git
cd typescript
git remote add upstream https://github.com/Microsoft/TypeScript
git fetch upstream
git checkout v3.9.7
git checkout -b branch_v3.9.7
git cherry pick <previous-release-branch-commit-we-did>
npm install
gulp local
rsync built/local/typescript.js ~/src/deno/cli/tsc/00_typescript.js
rsync --exclude=protocol.d.ts --exclude=tsserverlibrary.d.ts --exclude=typescriptServices.d.ts built/local/*.d.ts ~/src/deno/cli/tsc/dts/