Removes the TSC snapshot to unblock the V8 upgrade (which enables shared
RO heap, and is incompatible with multiple snapshots).
this compresses the sources and declaration files as well, which leads
to a roughly 4.2MB reduction in binary size.
this currently adds about 80ms to deno check times, but code cache isn't
wired up for the extension code (namely `00_typescript.js`) yet
```
❯ hyperfine --warmup 5 -p "rm -rf ~/Library/Caches/deno/check_cache_v2" "../../deno/target/release-lite/deno check main.ts" "deno check main.ts"
Benchmark 1: ../../deno/target/release-lite/deno check main.ts
Time (mean ± σ): 184.2 ms ± 2.2 ms [User: 378.3 ms, System: 48.2 ms]
Range (min … max): 181.5 ms … 189.9 ms 15 runs
Benchmark 2: deno check main.ts
Time (mean ± σ): 107.4 ms ± 1.2 ms [User: 155.3 ms, System: 23.9 ms]
Range (min … max): 105.3 ms … 109.6 ms 26 runs
Summary
deno check main.ts ran
1.72 ± 0.03 times faster than ../../deno/target/release-lite/deno check main.ts
```
---------
Co-authored-by: Bartek Iwańczuk <biwanczuk@gmail.com>
This makes it so imports of ambient modules (e.g. `$app/environment` in
svelte, any virtual module in vite, or other module provided by a
bundler) don't error in the LSP.
The way this works is that when we request diagnostics from TSC, we also
respond with the list of ambient modules. Then, in the diagnostics code,
we save diagnostics (produced by deno) that may be invalidated as an
ambient module and wait to publish the diagnostics until we've received
the ambient modules from TSC.
The actual ambient modules you get from TSC can contain globs, e.g.
`*.css`. So when we get new ambient modules, we compile them all into a
regex and check erroring imports against that regex. Ambient modules
should change rarely, so in most cases we should be using a pre-compiled
regex, which executes in linear time (wrt the specifier length).
TODO:
- Ideally we should only publish once, right now we publish with the
filtered specifiers and then the TSC ones
- deno check (#27633)
This is a pure refactor, the `99_main_compiler.js` file
was getting out of hand, being over 1500 lines and serving
3 distinct purposes:
- snapshotting
- type-checking
- running LSP
The file was split into:
- 97_ts_host.js
- 98_lsp.js
- 99_main_compiler.js
