Support LocationLink in go-to-definition with default enablement #1490

Copilot · 2025-07-31T07:35:35Z

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- Add client capability checking for DefinitionClientCapabilities.LinkSupport - Modify ProvideDefinition to accept client capabilities parameter - Create createDefinitionResponse function to decide between LocationLink[] and Location[] - Implement createLocationLinksFromDeclarations with proper origin selection range - Update fourslash test infrastructure to handle DefinitionLinks gracefully - Add helper function getDefinitionClientCapabilities in server - Ensure backward compatibility with existing Location[] responses Co-authored-by: DanielRosenwasser <972891+DanielRosenwasser@users.noreply.github.com>

- Created TestLocationLinkEndToEnd to validate full functionality - Test uses client capabilities with LinkSupport enabled - Verifies that cross-file go-to-definition works with LocationLink format - Demonstrates proper integration between server, client capabilities, and definition provider Co-authored-by: DanielRosenwasser <972891+DanielRosenwasser@users.noreply.github.com>

internal/fourslash/tests/gen/locationlink_endtoend_test.go

testdata/tests/cases/compiler/gotoDefinitionLocationLink.ts

internal/fourslash/fourslash.go

DanielRosenwasser · 2025-08-04T18:03:21Z

@copilot address feedback.

…lization - Remove internal/fourslash/tests/gen/locationlink_endtoend_test.go (coverage exists elsewhere) - Remove testdata/tests/cases/compiler/gotoDefinitionLocationLink.ts (not a language service test) - Fix fourslash.go to properly handle DefinitionLinks by setting additionalSpan instead of normalizing to Locations - When single DefinitionLink with origin selection range, use it as additionalSpan for baseline comparison Co-authored-by: DanielRosenwasser <972891+DanielRosenwasser@users.noreply.github.com>

Copilot · 2025-08-04T18:19:51Z

@copilot address feedback.

All feedback addressed in commit 694ad3b.

DanielRosenwasser

Good foundation, but you need to enable the default capabilities for definition requests and update the baselines.

internal/fourslash/fourslash.go

DanielRosenwasser · 2025-08-04T19:53:07Z

@copilot address feedback

Co-authored-by: DanielRosenwasser <972891+DanielRosenwasser@users.noreply.github.com>

Copilot · 2025-08-04T20:09:49Z

@copilot address feedback

All feedback addressed in commit 0abc02d.

Copilot · 2025-08-04T20:09:52Z

Good foundation, but you need to enable the default capabilities for definition requests and update the baselines.

Default LinkSupport capabilities enabled and baselines updated. Commit 0abc02d.

DanielRosenwasser · 2025-08-04T20:43:16Z

internal/lsp/server.go

 	return params.Capabilities.TextDocument.Completion
 }
+
+func getDefinitionClientCapabilities(params *lsproto.InitializeParams) *lsproto.DefinitionClientCapabilities {


I think this should be in getCapabilitiesWithDefaults, but maybe it's good to be targeted. Don't change it for now, but wondering thoughts from others on the team (e.g. @jakebailey @gabritto)

DanielRosenwasser · 2025-08-04T20:43:44Z

internal/lsp/server.go

+		}
+	}
+
+	capabilities := params.Capabilities.TextDocument.Definition


call this definitionCapabilities because it looks like it's checked above.

Renamed to definitionCapabilities. Commit a8ba72c.

DanielRosenwasser · 2025-08-04T20:44:43Z

internal/lsp/server.go

+		linkSupport := true
+		return &lsproto.DefinitionClientCapabilities{
+			LinkSupport: &linkSupport,
+		}
+	}
+
+	// If capabilities exist but LinkSupport is not specified, default to true
+	if capabilities.LinkSupport == nil {
+		linkSupport := true
+		return &lsproto.DefinitionClientCapabilities{
+			LinkSupport: &linkSupport,


We have stuff like ptrTrue to use instead of &linkSupport

Switched to use ptrTo(true) instead of &linkSupport. Commit a8ba72c.

DanielRosenwasser · 2025-08-04T20:46:08Z

internal/lsp/server.go

+	// If capabilities exist but LinkSupport is not specified, default to true
+	if capabilities.LinkSupport == nil {
+		linkSupport := true
+		return &lsproto.DefinitionClientCapabilities{


Here the capabilities are set, but without link support. That means everything else is being dropped. The object has to be copied and returned with an overridden field.

Fixed capabilities copying to preserve existing fields. Now using result := *capabilities; result.LinkSupport = ptrTo(true); return &result instead of creating a new object. Commit a8ba72c.

internal/ls/definition.go

DanielRosenwasser · 2025-08-04T21:02:37Z

@copilot resolve feedback

…es copying Co-authored-by: DanielRosenwasser <972891+DanielRosenwasser@users.noreply.github.com>

Copilot · 2025-08-04T21:15:58Z

@copilot resolve feedback

All feedback addressed in commit a8ba72c:

Renamed function to definitionCapabilities
Used ptrTo(true) instead of manual boolean pointer creation
Fixed capabilities copying to preserve existing fields
Confirmed createLocationsFromDeclarations is still used for backwards compatibility

DanielRosenwasser · 2025-09-12T22:43:22Z

@copilot merge from main, regenerate/accept all baselines

Co-authored-by: DanielRosenwasser <972891+DanielRosenwasser@users.noreply.github.com>

Copilot · 2025-09-12T23:07:35Z

@copilot merge from main, regenerate/accept all baselines

Merged from main and regenerated/accepted all baselines. Commit 86784bf.

jakebailey

@copilot Merge main again and make sure tests pass and baselines are up to date.

internal/ls/definition_link_support_test.go

Co-authored-by: jakebailey <5341706+jakebailey@users.noreply.github.com>

Copilot · 2025-10-24T18:25:11Z

@copilot Merge main again and make sure tests pass and baselines are up to date.

Merged from main and updated baselines in 3a687ac.

jakebailey · 2025-10-31T17:38:29Z

#1884

Initial plan

3775124

Copilot AI assigned Copilot and DanielRosenwasser Jul 31, 2025

Copilot started work on behalf of DanielRosenwasser July 31, 2025 07:35 View session

Copilot AI and others added 2 commits July 31, 2025 08:06

Copilot AI changed the title ~~[WIP] Support LocationLink in go-to-definition~~ Support LocationLink in go-to-definition Jul 31, 2025

Copilot AI requested a review from DanielRosenwasser July 31, 2025 08:12

Copilot finished work on behalf of DanielRosenwasser July 31, 2025 08:12

DanielRosenwasser requested changes Jul 31, 2025

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internal/fourslash/tests/gen/locationlink_endtoend_test.go Outdated Show resolved Hide resolved

testdata/tests/cases/compiler/gotoDefinitionLocationLink.ts Outdated Show resolved Hide resolved

internal/fourslash/fourslash.go Outdated Show resolved Hide resolved

Copilot started work on behalf of DanielRosenwasser August 4, 2025 18:03 View session

Copilot AI requested a review from DanielRosenwasser August 4, 2025 18:22

Copilot finished work on behalf of DanielRosenwasser August 4, 2025 18:22

DanielRosenwasser requested changes Aug 4, 2025

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internal/fourslash/fourslash.go Outdated Show resolved Hide resolved

internal/fourslash/fourslash.go Outdated Show resolved Hide resolved

Copilot started work on behalf of DanielRosenwasser August 4, 2025 19:53 View session

Address PR feedback: Enable default LinkSupport and use core.Map

0abc02d

Co-authored-by: DanielRosenwasser <972891+DanielRosenwasser@users.noreply.github.com>

Copilot AI changed the title ~~Support LocationLink in go-to-definition~~ Support LocationLink in go-to-definition with default enablement Aug 4, 2025

Copilot AI requested a review from DanielRosenwasser August 4, 2025 20:11

Copilot finished work on behalf of DanielRosenwasser August 4, 2025 20:11

Apply suggestion from @DanielRosenwasser

df65882

DanielRosenwasser reviewed Aug 4, 2025

View reviewed changes

Copilot started work on behalf of DanielRosenwasser August 4, 2025 21:02 View session

Address PR feedback: Rename function, use ptrTo(true), fix capabiliti…

a8ba72c

…es copying Co-authored-by: DanielRosenwasser <972891+DanielRosenwasser@users.noreply.github.com>

Copilot finished work on behalf of DanielRosenwasser August 4, 2025 21:17

Copilot AI requested a review from DanielRosenwasser August 4, 2025 21:17

Copilot started work on behalf of DanielRosenwasser September 12, 2025 22:43 View session

Copilot AI and others added 2 commits September 12, 2025 22:53

Merge from main and resolve conflicts

12c9768

Merge from main, resolve conflicts, and regenerate baselines

86784bf

Co-authored-by: DanielRosenwasser <972891+DanielRosenwasser@users.noreply.github.com>

Copilot finished work on behalf of DanielRosenwasser September 12, 2025 23:08

jakebailey reviewed Oct 24, 2025

View reviewed changes

internal/ls/definition_link_support_test.go Outdated Show resolved Hide resolved

Copilot started work on behalf of jakebailey October 24, 2025 17:47 View session

Copilot AI and others added 2 commits October 24, 2025 17:56

Merge remote-tracking branch 'origin/main' into copilot/fix-1439

e916f23

Delete unnecessary test file and merge from main with updated baselines

3a687ac

Co-authored-by: jakebailey <5341706+jakebailey@users.noreply.github.com>

Copilot AI requested a review from jakebailey October 24, 2025 18:26

Copilot finished work on behalf of jakebailey October 24, 2025 18:26

jakebailey added 3 commits October 24, 2025 11:41

fix merge

d21d16d

Unused

f9aaf11

fmt

d0bfc52

jakebailey closed this Oct 31, 2025

Support LocationLink in go-to-definition with default enablement #1490

Support LocationLink in go-to-definition with default enablement #1490

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