Syntax only server creates inferred project with all the open files w… by sheetalkamat · Pull Request #38561 · microsoft/TypeScript

Sheetal Nandi (sheetalkamat) · 2020-05-13T23:12:19Z

…ith noResolve and can handle semantic operations

Fixes #

…ith noResolve and can handle semantic operations

Sheetal Nandi (sheetalkamat) · 2020-05-13T23:12:30Z

TypeScript Bot (@typescript-bot) pack this

TypeScript Bot (typescript-bot) · 2020-05-13T23:12:33Z

Heya Sheetal Nandi (@sheetalkamat), I've started to run the tarball bundle task on this PR at 5726838. You can monitor the build here.

Sheetal Nandi (sheetalkamat) · 2020-05-13T23:57:32Z

TypeScript Bot (@typescript-bot) pack this

TypeScript Bot (typescript-bot) · 2020-05-13T23:57:36Z

Heya Sheetal Nandi (@sheetalkamat), I've started to run the tarball bundle task on this PR at 90d8a96. You can monitor the build here.

TypeScript Bot (typescript-bot) · 2020-05-14T00:04:46Z

Hey Sheetal Nandi (@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/73860/artifacts?artifactName=tgz&fileId=2BC1D5FE49C2AD5CCA135D57CEE4CA308A5E08ADDD7B5A264EDC56EE6D487BE002&fileName=/typescript-4.0.0-insiders.20200514.tgz"
    }
}

and then running npm install.

There is also a playground for this build.

Sheetal Nandi (sheetalkamat) · 2020-05-14T17:53:58Z

Matt Bierner (@mjbvz) Mine Starks (@minestarks) Ben Lichtman (@uniqueiniquity) Andrew Casey (@amcasey) Daniel Rosenwasser (@DanielRosenwasser) Ryan Cavanaugh (@RyanCavanaugh)
#38561 (comment) is build where syntaxOnly server can accept semantic commands.. ( i havent added any custom changes for any semantic commands nor have i limited any semantic operations as part of this prototype)

#38564 is PR that is on top of this and makes normal tsserver behave like syntaxOnly (one with semantic operations allowed)

Andrew Casey (amcasey) · 2020-05-14T20:12:01Z

I'll be interested to see what this does to startup perf on the syntax server. Looks pretty cool though.

Andrew Casey (amcasey) · 2020-05-22T20:34:22Z

I've run into a pretty big issue on the VS side: semantic operations tend to be triggered for Roslyn Documents and those don't exist until the project is loaded. So I see operations during project load in already open documents, but not in the newly opened document (i.e. the one that triggered the project load). Obviously, this has nothing to do with the tsserver change.

Daniel Rosenwasser (DanielRosenwasser) · 2020-06-09T17:32:35Z

TypeScript Bot (@typescript-bot) pack this

TypeScript Bot (typescript-bot) · 2020-06-09T17:32:53Z

Heya Daniel Rosenwasser (@DanielRosenwasser), I've started to run the tarball bundle task on this PR at 90d8a96. You can monitor the build here.

TypeScript Bot (typescript-bot) · 2020-06-09T17:40:17Z

Hey Daniel Rosenwasser (@DanielRosenwasser), 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/75966/artifacts?artifactName=tgz&fileId=BB849547A1DF11A54E5245D89DF5DAFE50EAC3E3C08A813981103A387395A0B802&fileName=/typescript-4.0.0-insiders.20200609.tgz"
    }
}

and then running npm install.

There is also a playground for this build.

Daniel Rosenwasser (DanielRosenwasser) · 2020-06-09T18:14:06Z

I'm not able to see things working better with

the latest VS Code Insiders with commit microsoft/vscode@480c98f
"typescript.tsserver.useSeparateSyntaxServer": "dynamic",
using this build: Syntax only server creates inferred project with all the open files w… #38561 (comment)

Daniel Rosenwasser (DanielRosenwasser) · 2020-06-11T19:11:08Z

TypeScript Bot (@typescript-bot) pack this

TypeScript Bot (typescript-bot) · 2020-06-11T19:11:24Z

Heya Daniel Rosenwasser (@DanielRosenwasser), I've started to run the tarball bundle task on this PR at 90d8a96. You can monitor the build here.

TypeScript Bot (typescript-bot) · 2020-06-11T19:19:08Z

Hey Daniel Rosenwasser (@DanielRosenwasser), 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/76193/artifacts?artifactName=tgz&fileId=0AD85EA4EF3D7253C964378CA736CCDB891DD80E981648EE08731F97511241AD02&fileName=/typescript-4.0.0-insiders.20200611.tgz"
    }
}

and then running npm install.

There is also a playground for this build.

Daniel Rosenwasser (DanielRosenwasser) · 2020-06-11T19:40:40Z

I'm finally trying this out with VS Code Insiders! Pretty cool! A couple of thoughts and ideas

From the editor side:

the startup time still isn't instantaneous for the syntax server, so I'm really never sure whether I can start editing reliably until I try quick info over and over. I think this is something we'll really need to provide a visual indication for before we make it broadly available.

From the TypeScript side:

I think cross-file go-to-definition was one of the key scenarios we'd like to get to users, so I think we should really try to get that to light up, either here or in a follow-up PR.
the fact that we show any when things aren't resolved in this mode is kind of confusing. For type display purposes, we might want to consider displaying the error type as something like a loading type.

Cyrus Najmabadi (@CyrusNajmabadi), how does Roslyn work when types haven't been resolved yet in things like quick info and signature help?

For example we have this signature

but CodeActionsState.State can't be resolved, so signature help looks like this:

Cyrus Najmabadi (CyrusNajmabadi) · 2020-06-11T19:48:00Z

Cyrus Najmabadi (@CyrusNajmabadi), how does Roslyn work when types haven't been resolved yet in things like quick info and signature help?

We don't have that concept :)

Sheetal Nandi (sheetalkamat) · 2020-06-13T00:07:19Z

+        CommandNames.CompileOnSaveEmitFile,
+        CommandNames.CompilerOptionsDiagnosticsFull,
+        CommandNames.EncodedSemanticClassificationsFull,
+        CommandNames.SemanticDiagnosticsSync,


SyntacticDiagnosticsSync: This is somewhat project setting dependent ? Atleast at some point parsing errors use to be different based on target .. eg target determines what unicode is considered identifier start... So i am not sure if this should be enabled.. But if we do enable we i was wondering if GetErr should only do syntax checks and skip semantic and suggetion diagnostics on syntax server

Some questionable which i have disabled for now
Reload
ReloadProjects
PrepareCallHierarchy
ProvideCallHierarchyIncomingCalls
ProvideCallHierarchyOutgoingCalls

Sheetal Nandi (sheetalkamat) · 2020-06-13T00:10:41Z

TypeScript Bot (@typescript-bot) pack this

TypeScript Bot (typescript-bot) · 2020-06-13T00:10:42Z

Heya Sheetal Nandi (@sheetalkamat), I've started to run the tarball bundle task on this PR at 89127a5. You can monitor the build here.

TypeScript Bot (typescript-bot) · 2020-06-13T00:17:05Z

Hey Sheetal Nandi (@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/76345/artifacts?artifactName=tgz&fileId=CD3C20B0D73291C13F028F1A072CA740FDD866AD700C026ACA443AFA3B0B0C3002&fileName=/typescript-4.0.0-insiders.20200613.tgz"
    }
}

and then running npm install.

There is also a playground for this build.

Andrew Casey (amcasey)

Some comments, but LGTM

Andrew Casey (amcasey) · 2020-06-16T00:51:04Z

        }
    }

+    const invalidOperationsOnSyntaxOnly: readonly (keyof LanguageService)[] = [


How does this relate to the list in session.ts? Do they need to stay in sync? Is one redundant?

Andrew Casey (amcasey) · 2020-06-16T00:51:59Z

+        if (syntaxOnly) {
+            invalidOperationsOnSyntaxOnly.forEach(key =>
+                ls[key] = (...args: any[]) => {
+                    throw new Error(`LanguageService Operation: ${key} not allowed on syntaxServer:: arguments::${JSON.stringify(args)}`);


As above, we probably don't need the arguments.

This reverts commit 90d8a96.

Daniel Rosenwasser (DanielRosenwasser) · 2020-06-16T20:06:49Z

Speaking of logs- do editors log from the syntax server?

Andrew Casey (amcasey) · 2020-06-16T20:13:54Z

VS logging is opt-in (via env var or regkey), but, yes, it applies to both.

VS Code only has a command to show the semantic log (AFAIK), but I'm pretty sure it enables both.

Sheetal Nandi (sheetalkamat) · 2020-06-16T20:39:13Z

Matt Bierner (@mjbvz) We definitely want users to be able to share the syntaxOnly server logs easily.

Syntax only server creates inferred project with all the open files w…

5726838

…ith noResolve and can handle semantic operations

TypeScript Bot (typescript-bot) assigned Sheetal Nandi (sheetalkamat) May 13, 2020

TypeScript Bot (typescript-bot) added the Author: Team label May 13, 2020

Sheetal Nandi (sheetalkamat) added 2 commits May 13, 2020 16:31

No Watching

ffe50a3

Disable tests

90d8a96

Sheetal Nandi (sheetalkamat) mentioned this pull request May 14, 2020

Always syntax only #38564

Closed

Dave Herman (dherman) mentioned this pull request Jun 9, 2020

Support volta installing a tarball volta-cli/volta#427

Closed

Daniel Rosenwasser (DanielRosenwasser) mentioned this pull request Jun 9, 2020

Support sending some commands to syntax TS Server while a project is loading microsoft/vscode#99643

Closed

Daniel Rosenwasser (DanielRosenwasser) mentioned this pull request Jun 12, 2020

Partial Semantic Mode Meta-Issue #39035

Open

5 tasks

Sheetal Nandi (sheetalkamat) added 3 commits June 12, 2020 14:43

Merge branch 'master' into syntaxAsSemanticServer

cb638d9

Add and fix tests

807c008

Only support selected commands

89127a5

Sheetal Nandi (sheetalkamat) marked this pull request as ready for review June 13, 2020 00:06

Sheetal Nandi (sheetalkamat) commented Jun 13, 2020

View reviewed changes

Sheetal Nandi (sheetalkamat) requested review from Daniel Rosenwasser (DanielRosenwasser), Ryan Cavanaugh (RyanCavanaugh), Andrew Casey (amcasey) and Andrew Branch (andrewbranch) June 13, 2020 00:07

Andrew Casey (amcasey) approved these changes Jun 16, 2020

View reviewed changes

Sheetal Nandi (sheetalkamat) added 2 commits June 16, 2020 12:58

Revert "Disable tests"

3e1a3c2

This reverts commit 90d8a96.

Dont log request details for unsupported commands

901cfc3

Sheetal Nandi (sheetalkamat) merged commit 25f6232 into master Jun 16, 2020

Sheetal Nandi (sheetalkamat) deleted the syntaxAsSemanticServer branch June 16, 2020 20:39

github-actions Bot mentioned this pull request Oct 4, 2022

[Korean] Fix weird expressions like '_제네릭_' microsoft/TypeScript-Website-Localizations#171

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Microsoft (microsoft) locked as resolved and limited conversation to collaborators Oct 21, 2025

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