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Optimize the size for tsbuildinfo by sheetalkamat · Pull Request #43155 · microsoft/TypeScript · GitHub
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Merged
merged 7 commits into from
Mar 10, 2021
Merged

Optimize the size for tsbuildinfo #43155

merged 7 commits into from
Mar 10, 2021

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@sheetalkamat
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@sheetalkamat sheetalkamat commented Mar 9, 2021 •
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This is simplified version of #43079 and additional optimizations for tsbuildinfo size

Changes are:

  1. fileNames : new entry which is list of filenames tsbuildinfo will encounter, index of the file name is used as fileId everywhere
  2. fileInfos: is now a list instead of map. FileFnfo is for the file at given fileId as index
  3. Semantic diagnostics and affectedFilesPendingEmit also use fileId instead of file name
  4. fileIdsList: is a list of fileIds that referenceMap or exportedModulesMap will use. Index of this list will be used as fileIdsListId for reference map
  5. referenceMap and exportedModulesMap is converted to tuple array with first entry being fileId and second one being fileIdsListId
  6. Instead of emitting tsbuildinfo with 2 space indent, its emitted without spaces
  7. Testrunner emits the old format of readable tsbuildinfo as a readable.baseline.txt so that we can verify correctness easily

@sheetalkamat
Baseline readable buildinfo
cd71acc
@sheetalkamat
Use file names as index in file name list
bda4556 
This is extension of the idea given by @sokra to optimize size of tsbuildinfo
@sheetalkamat
Deduplicate reference map lists and use file name index to sort them
2a0224e 
Different implementation of #43079 based on idea suggested by @sokra
@sheetalkamat
Minimal json.stringify for the tsbuildinfo
41026d7 
Again implementaion of suggestion by @sokra
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@typescript-bot pack this

@typescript-bot typescript-bot added the For Uncommitted Bug PR for untriaged, rejected, closed or missing bug label Mar 9, 2021
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@typescript-bot pack this

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typescript-bot commented Mar 9, 2021 •
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Heya @sheetalkamat, I've started to run the tarball bundle task on this PR at 41026d7. You can monitor the build here.

@sheetalkamat sheetalkamat mentioned this pull request Mar 9, 2021
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typescript-bot commented Mar 9, 2021 •
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Hey @sheetalkamat, I've packed this into an installable tgz. You can install it for testing by referencing it in your package.json like so:

{
    "devDependencies": {
        "typescript": "https://typescript.visualstudio.com/cf7ac146-d525-443c-b23c-0d58337efebc/_apis/build/builds/97992/artifacts?artifactName=tgz&fileId=CCB541D9CC318BAC74920143D5E2DF0C64321E312E920809A6FF415858B299A602&fileName=/typescript-4.3.0-insiders.20210309.tgz"
    }
}

and then running npm install.

There is also a playground for this build and an npm module you can use via "typescript": "npm:@typescript-deploys/pr-build@4.3.0-pr-43155-3".;

sokra
sokra approved these changes Mar 9, 2021
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Looks good, I noticed a few minor nitpicks for the test runner

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sokra commented Mar 9, 2021

I tried this version in my project.

Total Size: 14.9MB -> 1.0MB
Gzipped size: 526KB -> 251KB

  • fileNames size: 134KB
  • fileInfos size: 547KB
  • fileNamesList size: 283KB
  • referencedMap size: 32KB
  • exportedModulesMap size: 60KB

sheetalkamat and others added 2 commits March 9, 2021 08:50
amcasey
amcasey reviewed Mar 9, 2021
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Can you please summarize the high-level changes? Pulling out numeric identifiers seems like an easy win - what else changed?

@sheetalkamat sheetalkamat requested a review from amcasey March 9, 2021 21:16
amcasey
amcasey approved these changes Mar 9, 2021
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My review was somewhat shallow, but the explanation made sense and I didn't notice obvious bugs.

@sheetalkamat sheetalkamat merged commit 6e4456b into master Mar 10, 2021
@sheetalkamat sheetalkamat deleted the miniBuildInfo branch March 10, 2021 00:15
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@andrewbranch andrewbranch Awaiting requested review from andrewbranch

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@sokra sokra sokra approved these changes

@amcasey amcasey amcasey approved these changes

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