Reduce exceptions #44710
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Reduce exceptions #44710
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typescript-bot
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@typescript-bot perf test this |
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Heya @amcasey, I've started to run the perf test suite on this PR at 7091edc. You can monitor the build here. Update: The results are in! |
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@amcasey Here they are:Comparison Report - main..44710
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I'm extremely skeptical that this could have reduced check time since, AFAIK, none of our benchmarks are built in watch mode and the checker does not use |
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@typescript-bot perf test this |
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Heya @amcasey, I've started to run the perf test suite on this PR at d9ae52c. You can monitor the build here. Update: The results are in! |
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@amcasey Here they are:Comparison Report - main..44710
System
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Developer Information: |
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| @@ -6506,7 +6506,9 @@ namespace ts { | |||
| const visited = new Map<string, true>(); | |||
| const toCanonical = createGetCanonicalFileName(useCaseSensitiveFileNames); | |||
| for (const basePath of patterns.basePaths) { | |||
| visitDirectory(basePath, combinePaths(currentDirectory, basePath), depth); | |||
| if (directoryExists(basePath)) { | |||
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@amcasey I wonder if this check is causing a behavior change in the material-ui benchmark and changing the number of .d.ts files that get loaded or similar.
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Comparing --extendedDiagnostics might be a good first step to figuring out whether there really is an observable behavior change, if you haven't already done that @amcasey
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Sorry, we'd been discussing this offline and I forgot to update the issue. The perf suite was using the wrong baseline. I'll kick off a clean run now, but local testing showed no change in the check time of material-ui.
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I guess I should also say that I don't believe it will cause a behavioral change because visitDirectory would just see an empty list of fs entries for the non-existent directory and stop.
The latest perf run shows no change, as expected. 😄
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@amcasey Hi! I don't know if it the right place to ask a question but I found this thread relative to the problem (I'm sorry if it's not). Should directoryExists be called with an absolute path like directoryExists(combinePaths(currentDirectory, basePath))?
I came across the undocumented breaking change in 4.4-beta that causes (for example) ts.sys.readDirectory("", [".ts",".tsx",".d.ts"],["node_modules","dist"],["**/*"]) to return an empty array. Before 4.4-beta it has been returning the correct array of files. So I wonder if it is a bug or desired behaviour.
Thank you in advance.
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@typescript-bot perf test this |
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Heya @amcasey, I've started to run the perf test suite on this PR at d9ae52c. You can monitor the build here. Update: The results are in! |
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@amcasey Here they are:Comparison Report - main..44710
System
Hosts
Scenarios
Developer Information: |
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andrewbranch
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Jun 28, 2021
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Sep 21, 2021
This reverts commit c0d5c29.
amcasey
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As pointed out by @gretzkiy, the `directoryExists` call added to `matchFiles` in microsoft#44710 should have been passing the absolute path (since the current directory might not match `currentDirectory`).
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* Pass absolute path to directoryExists As pointed out by @gretzkiy, the `directoryExists` call added to `matchFiles` in #44710 should have been passing the absolute path (since the current directory might not match `currentDirectory`). * Add test, simplify/clarify/fix matchFiles and friends Co-authored-by: Andrew Branch <[email protected]>
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This reverts commit c0d5c29.
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Component commits: 931b504 Revert "Fix RWC missing file detection (microsoft#46673)" This reverts commit 4a065f5. afef282 Revert "Pass absolute path to directoryExists (microsoft#46086)" This reverts commit 55b4928. f1a20b3 Revert "Reduce exceptions (microsoft#44710)" This reverts commit c0d5c29. 56842cd Add back system watcher limit
andrewbranch
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Component commits: 931b504 Revert "Fix RWC missing file detection (#46673)" This reverts commit 4a065f5. afef282 Revert "Pass absolute path to directoryExists (#46086)" This reverts commit 55b4928. f1a20b3 Revert "Reduce exceptions (#44710)" This reverts commit c0d5c29. 56842cd Add back system watcher limit Co-authored-by: Andrew Branch <[email protected]>
mprobst
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Jan 10, 2022
* Pass absolute path to directoryExists As pointed out by @gretzkiy, the `directoryExists` call added to `matchFiles` in microsoft#44710 should have been passing the absolute path (since the current directory might not match `currentDirectory`). * Add test, simplify/clarify/fix matchFiles and friends Co-authored-by: Andrew Branch <[email protected]>
mprobst
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Jan 10, 2022
…46787) * Revert "Fix RWC missing file detection (microsoft#46673)" This reverts commit 4a065f5. * Revert "Pass absolute path to directoryExists (microsoft#46086)" This reverts commit 55b4928. * Revert "Reduce exceptions (microsoft#44710)" This reverts commit c0d5c29. * Add back system watcher limit
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Clean up a couple of exceptions that were being thrown repeatedly during initial project load of a large project on Linux:
matchFilesshouldn't callvisitDirectoryonbasePathsthat don't exist (throwing fromrealpathandreaddir)After this change, "All Exceptions" causes the debugger to stop exactly twice: when
typescript-etwis found to be absent and the first time the file watcher limit is hit.This change is purely to make it easier to enable "All Exceptions" when debugging TypeScript - not for correctness or (significant) perf improvements.