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Jake Bailey

@jakebailey.dev

According to git blame, I wrote the TypeScript compiler, don't fact check that Principal Software Engineer at Microsoft working on TypeScript Underground gopher, finally revealed jakebailey.dev github.com/jakebailey arch btw

1947 Posts4384 Follower409 Folgt
Jake Bailey@jakebailey.dev · last wk.

the worst part about talks is writing talks the best part about writing talks is finding all the oopsies in the code being talked about and thus, I now have PRs to make the TS AST 2% smaller, the parser 10% faster, the binder 1.5% faster

Jake Bailey@jakebailey.dev · 2w ago

Soo I hit the button to release TS 7 then swiftly went out of office for vacation 😅 How's it going for everyone? Hopefully speedy speedy good

npm@npmjs.com · 4w ago

npm v12 is now generally available. npm install now makes install scripts, Git, and remote-URL dependencies opt-in by default. We're also retiring npm 2FA-bypass GAT: no account management (early Aug 2026), no direct publishing (~Jan 2027). More info at github.blog/changelog/20...

npm install-time security and GAT bypass2fa deprecation - GitHub Changelog

npm v12 is now generally available and tagged latest. This major release turns on the install-time security defaults we announced in June, and it’s also where we begin a deprecation…

github.blog

Jake Bailey@jakebailey.dev · last mo.

Pretty surprised to see movement in the "make regex backtracking not catastrophic" space: arxiv.org/pdf/2311.17620 Only learned about this by being cross referenced to github.com/le0pard/re2js on a Go CL fixing a regex bug

GitHub - le0pard/re2js: RE2JS is the JavaScript port of RE2, a regular expression engine that provides linear time matching

RE2JS is the JavaScript port of RE2, a regular expression engine that provides linear time matching - le0pard/re2js

github.com

Jake Bailey@jakebailey.dev · last mo.

A week on and it's still working well; it required a gopls change (go.dev/cl/795221, hope that's released soon!). With 5 day pruning like Go does itself, that 5 day window leaves me sitting at about 150GB of cache, which comes out to about 20GB on disk. Very good!

Configuration: Cache directory /home/jake/.cache/gocachez Version directory /home/jake/.cache/gocachez/v1 Max size 20.0GiB Max age 5d Verbose false Summary: State present Cached actions 87014 Cached outputs 44924 Oldest cache entry 4d 15h Live runs 0 active, 2011 inactive Storage: Original output size 162.1GiB Compressed cache blobs 15.8GiB (44924 files) Blob max usage 15.8GiB / 20.0GiB (78.9%, 4.2GiB remaining) Retained go-list files 3.4GiB (16918 files) Total stored 19.2GiB Blob-only savings 146.4GiB (90.3%) Overall savings 142.9GiB (88.1%) Compressed blob contents: Type Files Original Stored Savings Go package archives 16353 160.6GiB 15.7GiB 145.0GiB ( 90.2%) Go test input logs 248 930.3MiB 42.5MiB 887.8MiB ( 95.4%) Go test outputs 660 560.7MiB 46.3MiB 514.4MiB ( 91.7%) Go package indexes 20686 31.8MiB 8.7MiB 23.1MiB ( 72.6%) Generated cgo sources 155 1.4MiB 261.4KiB 1.2MiB ( 82.3%) Go source files 466 1.4MiB 378.8KiB 1.0MiB ( 73.5%) Go source file lists 6232 860.9KiB 712.0KiB 148.9KiB ( 17.3%) Go analysis facts 114 133.7KiB 35.4KiB 98.3KiB ( 73.5%) C compiler IDs 6 660B 738B -78B ( -11.8%) Go tool flag probes 2 9B 35B -26B (-288.9%) Text files 1 3B 16B -13B (-433.3%) Empty files 1 0B 13B 0B ( 0.0%) Retained go-list files: Type Files Size Export archives 16291 3.4GiB Generated cgo sources 155 1.4MiB Generated test mains 466 1.4MiB Other retained files 6 18.4KiB
Jake Bailey@jakebailey.dev · last mo.

Did a bit of hacking this weekend and cooked up "gocachez", a GOCACHEPROG which transparently compresses the Go build cache to save disk space at rest at the cost of CPU, with fairly good results. Building and testing TS would normally eat up roughly 4GB, but with gocachez it's only about 400MB.

~  go env GOCACHEPROG gocachez ~  gocachez status Configuration: Cache directory /home/jabaile/.cache/gocachez Version directory /home/jabaile/.cache/gocachez/v1 Max size 20.0GiB (21474836480 bytes) Verbose false Catalog: State present Entries 2465 Outputs 1146 Uncompressed size 4.5GiB (4856553973 bytes) Compressed size 428.5MiB (449308207 bytes) Savings 4.1GiB (90.7%) Runs 0 Storage: Kind Files Size Blobs 1146 428.5MiB (449308207 bytes) Retained files 426 75.9MiB (79539189 bytes) Blob types (best effort): Type Files Uncompressed Compressed Extra Go package archives 416 4.4GiB (4716189032 bytes) 421.0MiB (441457527 bytes) export data: 75.8MiB (79487346 bytes) Text files 363 101.6MiB (106522835 bytes) 4.6MiB (4868707 bytes) Unknown binary files 56 30.0MiB (31468529 bytes) 2.4MiB (2496554 bytes) Go package indexes 259 2.2MiB (2303696 bytes) 454.5KiB (465442 bytes) Go analysis facts 40 45.4KiB (46439 bytes) 11.5KiB (11787 bytes) Generated cgo sources 10 22.8KiB (23343 bytes) 7.9KiB (8065 bytes) C compiler IDs 1 99B (99 bytes) 112B (112 bytes) Empty files 1 0B (0 bytes) 13B (13 bytes) Retained file types: Type Files Size Export archives 416 75.8MiB (79515846 bytes) Generated cgo sources 10 22.8KiB (23343 bytes) Live runs: State Count Active 0 Inactive 1
Jake Bailey@jakebailey.dev · last mo.

Did a bit of hacking this weekend and cooked up "gocachez", a GOCACHEPROG which transparently compresses the Go build cache to save disk space at rest at the cost of CPU, with fairly good results. Building and testing TS would normally eat up roughly 4GB, but with gocachez it's only about 400MB.

~  go env GOCACHEPROG gocachez ~  gocachez status Configuration: Cache directory /home/jabaile/.cache/gocachez Version directory /home/jabaile/.cache/gocachez/v1 Max size 20.0GiB (21474836480 bytes) Verbose false Catalog: State present Entries 2465 Outputs 1146 Uncompressed size 4.5GiB (4856553973 bytes) Compressed size 428.5MiB (449308207 bytes) Savings 4.1GiB (90.7%) Runs 0 Storage: Kind Files Size Blobs 1146 428.5MiB (449308207 bytes) Retained files 426 75.9MiB (79539189 bytes) Blob types (best effort): Type Files Uncompressed Compressed Extra Go package archives 416 4.4GiB (4716189032 bytes) 421.0MiB (441457527 bytes) export data: 75.8MiB (79487346 bytes) Text files 363 101.6MiB (106522835 bytes) 4.6MiB (4868707 bytes) Unknown binary files 56 30.0MiB (31468529 bytes) 2.4MiB (2496554 bytes) Go package indexes 259 2.2MiB (2303696 bytes) 454.5KiB (465442 bytes) Go analysis facts 40 45.4KiB (46439 bytes) 11.5KiB (11787 bytes) Generated cgo sources 10 22.8KiB (23343 bytes) 7.9KiB (8065 bytes) C compiler IDs 1 99B (99 bytes) 112B (112 bytes) Empty files 1 0B (0 bytes) 13B (13 bytes) Retained file types: Type Files Size Export archives 416 75.8MiB (79515846 bytes) Generated cgo sources 10 22.8KiB (23343 bytes) Live runs: State Count Active 0 Inactive 1
Jake Bailey@jakebailey.dev · 2mo ago

@jorropo.net burst my bubble; this could actually be observable by a very goofy case of a boxed nil interface call, something that the Go test suite did not test! But, it's still salvageable; just generate one wrapper instead of zero, which is just a simplification of my second CL. redone

Gerrit Code Review

go-review.googlesource.com

Jake Bailey@jakebailey.dev · 2mo ago

This is a fun one: I just sent go.dev/cl/790740, which elides method wrappers for embedded types at offset zero, common for mixins/inherited data types. Doing this removes 60 _thousand_ method wrappers from tsgo's AST package, dropping the compilation of our main exe from 49s to 28s on my machine.

Benchmark 1: go build -a ./cmd/tsgo Time (mean ± σ): 48.992 s ± 0.274 s [User: 345.152 s, System: 12.545 s] Range (min … max): 48.702 s … 49.478 s 10 runs Benchmark 2: ~/work/go/bin/go build -a ./cmd/tsgo Time (mean ± σ): 28.323 s ± 0.133 s [User: 141.277 s, System: 4.853 s] Range (min … max): 28.075 s … 28.555 s 10 runs Summary ~/work/go/bin/go build -a ./cmd/tsgo ran 1.73 ± 0.01 times faster than go build -a ./cmd/tsgo
WSDOT@wsdot.wa.gov · 2mo ago

WELCOME TO WASHINGTON, SOCCER FANS. Get acquainted with our state via this highly accurate and mostly-to-scale map.

A hot mess of colorful scribbles all over a map of Washington, featuring doodles of iconic Washington features like mountains, orcas, ferries, cherries, onions, and other produce. The map emphasizes the busyness of the Seattle area, I-5, I-90, US 2, and the U.S./Canada border during the World Cup games.
Jake Bailey@jakebailey.dev · 2mo ago

This is a fun one: I just sent go.dev/cl/790740, which elides method wrappers for embedded types at offset zero, common for mixins/inherited data types. Doing this removes 60 _thousand_ method wrappers from tsgo's AST package, dropping the compilation of our main exe from 49s to 28s on my machine.

Benchmark 1: go build -a ./cmd/tsgo Time (mean ± σ): 48.992 s ± 0.274 s [User: 345.152 s, System: 12.545 s] Range (min … max): 48.702 s … 49.478 s 10 runs Benchmark 2: ~/work/go/bin/go build -a ./cmd/tsgo Time (mean ± σ): 28.323 s ± 0.133 s [User: 141.277 s, System: 4.853 s] Range (min … max): 28.075 s … 28.555 s 10 runs Summary ~/work/go/bin/go build -a ./cmd/tsgo ran 1.73 ± 0.01 times faster than go build -a ./cmd/tsgo
Jake Bailey@jakebailey.dev · 2mo ago

thank you YouTube for opening to a full page of shorts followed by "playables", both things I absolutely totally want and definitely have never clicked "show less" on multiple times before god forbid any product by any company actually respect my attention