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@gabritto gabritto marked this pull request as ready for review October 15, 2025 18:00
Copilot AI review requested due to automatic review settings October 15, 2025 18:00
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Pull Request Overview

Ports and adds fourslash tests and baseline handling for "go to type definition" functionality, including scripting support and a new verification helper.

  • Added numerous baseline .baseline.jsonc reference files for goToType scenarios.
  • Implemented VerifyBaselineGoToTypeDefinition in fourslash test harness and extended the conversion script to generate corresponding Go test code.
  • Added generated Go tests invoking the new type definition baseline verification; marked one JSDoc-related test as skipped and listed it in failing tests.

Reviewed Changes

Copilot reviewed 43 out of 43 changed files in this pull request and generated 1 comment.

Show a summary per file
File Description
testdata/baselines/reference/fourslash/goToType/typedefinition01.baseline.jsonc New baseline for basic type definition via imported class.
testdata/baselines/reference/fourslash/goToType/goToTypeDefinition_typedef.baseline.jsonc Baseline for JSDoc typedef resolution.
testdata/baselines/reference/fourslash/goToType/goToTypeDefinition_typeReference.baseline.jsonc Baseline for generic type reference.
testdata/baselines/reference/fourslash/goToType/goToTypeDefinition_returnType.baseline.jsonc Baselines for multiple return type targets.
testdata/baselines/reference/fourslash/goToType/goToTypeDefinition_promiseType.baseline.jsonc Baselines for async function promise and variable.
testdata/baselines/reference/fourslash/goToType/goToTypeDefinition_arrayType.baseline.jsonc Baselines for array and custom array types.
testdata/baselines/reference/fourslash/goToType/goToTypeDefinition_Pick.baseline.jsonc Baselines for mapped Pick type usage.
testdata/baselines/reference/fourslash/goToType/goToTypeDefinitionUnionType.baseline.jsonc Baseline for union type navigation.
testdata/baselines/reference/fourslash/goToType/goToTypeDefinitionPrimitives.baseline.jsonc Baselines for primitive and union primitive members.
testdata/baselines/reference/fourslash/goToType/goToTypeDefinitionModule.baseline.jsonc Baselines for module and typeof module variable.
testdata/baselines/reference/fourslash/goToType/goToTypeDefinitionModifiers.baseline.jsonc Baselines for class member modifiers and keywords.
testdata/baselines/reference/fourslash/goToType/goToTypeDefinitionImportMeta.baseline.jsonc Baseline for ImportMeta interface resolution.
testdata/baselines/reference/fourslash/goToType/goToTypeDefinitionEnumMembers.baseline.jsonc Baseline for enum member type.
testdata/baselines/reference/fourslash/goToType/goToTypeDefinitionAliases.baseline.jsonc Baselines for exported/imported alias chains.
testdata/baselines/reference/fourslash/goToType/goToTypeDefinition5.baseline.jsonc Baseline for shadowed identifier (var/type).
testdata/baselines/reference/fourslash/goToType/goToTypeDefinition4.baseline.jsonc Baseline for conflicting type/value export name.
testdata/baselines/reference/fourslash/goToType/goToTypeDefinition3.baseline.jsonc Baseline for simple type alias usage.
testdata/baselines/reference/fourslash/goToType/goToTypeDefinition2.baseline.jsonc Baseline for property referencing aliased interface.
testdata/baselines/reference/fourslash/goToType/goToTypeDefinition.baseline.jsonc Baseline for basic class instance.
testdata/baselines/reference/fourslash/goToDefinition/goToTypeDefinition4.baseline.jsonc Added definition baseline for overlapping type/value symbol test.
internal/fourslash/tests/gen/typedefinition01_test.go New generated test for basic type definition.
internal/fourslash/tests/gen/jsDocServices_test.go Added (skipped) JSDoc services test including type definition verification.
internal/fourslash/tests/gen/goToTypeDefinition_typedef_test.go Generated test for JSDoc typedef.
internal/fourslash/tests/gen/goToTypeDefinition_typeReference_test.go Generated test for generic type reference.
internal/fourslash/tests/gen/goToTypeDefinition_test.go Generated test for class instance type definition.
internal/fourslash/tests/gen/goToTypeDefinition_returnType_test.go Generated test covering various return types.
internal/fourslash/tests/gen/goToTypeDefinition_promiseType_test.go Generated promise resolution test.
internal/fourslash/tests/gen/goToTypeDefinition_arrayType_test.go Generated array/custom array tests.
internal/fourslash/tests/gen/goToTypeDefinition_Pick_test.go Generated Pick mapped type test.
internal/fourslash/tests/gen/goToTypeDefinitionUnionType_test.go Generated union type test.
internal/fourslash/tests/gen/goToTypeDefinitionPrimitives_test.go Generated primitives navigation test.
internal/fourslash/tests/gen/goToTypeDefinitionModule_test.go Generated module/typeof test.
internal/fourslash/tests/gen/goToTypeDefinitionModifiers_test.go Generated modifiers test.
internal/fourslash/tests/gen/goToTypeDefinitionImportMeta_test.go Generated ImportMeta test.
internal/fourslash/tests/gen/goToTypeDefinitionEnumMembers_test.go Generated enum member test.
internal/fourslash/tests/gen/goToTypeDefinitionAliases_test.go Generated alias chain test.
internal/fourslash/tests/gen/goToTypeDefinition5_test.go Generated shadowed identifier test.
internal/fourslash/tests/gen/goToTypeDefinition4_test.go Generated conflicting symbol test including go-to-def.
internal/fourslash/tests/gen/goToTypeDefinition3_test.go Generated simple alias test.
internal/fourslash/tests/gen/goToTypeDefinition2_test.go Generated property alias test.
internal/fourslash/fourslash.go Added VerifyBaselineGoToTypeDefinition implementation.
internal/fourslash/_scripts/failingTests.txt Registered skipped JSDoc test as failing.
internal/fourslash/_scripts/convertFourslash.mts Extended script to parse and generate go-to-type baseline commands.

@gabritto gabritto added this pull request to the merge queue Oct 15, 2025
Merged via the queue into main with commit 6183abf Oct 15, 2025
22 checks passed
@gabritto gabritto deleted the gabritto/def3 branch October 15, 2025 18:35
GGomez99 pushed a commit to GGomez99/typescript-go that referenced this pull request Oct 21, 2025
nathanwhit added a commit to denoland/typescript-go that referenced this pull request Dec 2, 2025
* Port 'go to type definition' tests (microsoft#1883)

* Fix panic in `getTokenAtPosition` for JSDoc type assertions (microsoft#1846)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: jakebailey <5341706+jakebailey@users.noreply.github.com>
Co-authored-by: andrewbranch <3277153+andrewbranch@users.noreply.github.com>
Co-authored-by: Andrew Branch <andrew@wheream.io>

* Don’t look in JSExportAssignment and CommonJSExport for nodes (microsoft#1886)

* Fix link in native preview platform packages (microsoft#1838)

* fix(1880): No error message for JSDoc type parsing (microsoft#1881)

* Add vscode editor issue template (microsoft#1893)

Co-authored-by: Ryan Cavanaugh <RyanCavanaugh@users.noreply.github.com>

* Add "Report Issue" button to TSGO status bar commands (microsoft#1889)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: DanielRosenwasser <972891+DanielRosenwasser@users.noreply.github.com>
Co-authored-by: Daniel Rosenwasser <DanielRosenwasser@users.noreply.github.com>

* fix(1898): adjust location handling in find-refs (microsoft#1901)

* Fix panic of empty string in type reference directive (microsoft#1908)

* Consistently error on full circle of circular import aliases (microsoft#1904)

* Fix panic in textDocument/onTypeFormatting when tokenAtPosition is nil (microsoft#1845)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: jakebailey <5341706+jakebailey@users.noreply.github.com>

* Update submodule (microsoft#1913)

* Disable create-cache.yml in forks (microsoft#1912)

* Forbid platform specific package uses in agnostic files (microsoft#1911)

* Fix JSDoc comment formatting with tab indentation (microsoft#1900)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: jakebailey <5341706+jakebailey@users.noreply.github.com>

* Clear local baseline dir in hereby test (microsoft#1921)

* Unskip passing fourslash test (microsoft#1922)

* Support auto-import completion fourslash tests, fix bugs (microsoft#1917)

* Fix JSX indentation in JavaScript output (microsoft#1792)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: jakebailey <5341706+jakebailey@users.noreply.github.com>

* Implement printAllHelp to fix `tsgo --all` producing no output (microsoft#1843)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: jakebailey <5341706+jakebailey@users.noreply.github.com>

* Bump the github-actions group across 1 directory with 2 updates (microsoft#1909)

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* Ensure os package is forbidden in lint (microsoft#1924)

* Speed up levenshteinWithMax by reusing buffers (microsoft#1823)

* Fix incorrect formatting for comments inside multi-line argument lists and method chains (microsoft#1929)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
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* Handle nil end position in getMappedLocation (microsoft#1920)

* Fix formatter adding extra space at end of line without trailing newline (microsoft#1933)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: jakebailey <5341706+jakebailey@users.noreply.github.com>

* Fix vscode issue template (microsoft#1934)

* userpreferences parsing/ls config handing (microsoft#1729)

* Plumb through TokenFlagsSingleQuote; use for auto import quote detection (microsoft#1937)

* Invalidate caches on batches of 1000+ watch changes (microsoft#1869)

* Create clickable links in quick info from @link JSDoc tags (microsoft#1935)

* Don't report errors on `{@link foo.bar}` references (microsoft#1941)

* Fix crash in `invocationErrorRecovery` function (microsoft#1944)

* Fix leading source file comment emit bugs (microsoft#1945)

* Implement selection ranges (microsoft#1939)

* Fix porting bug in isArgumentAndStartLineOverlapsExpressionBeingCalled (microsoft#1948)

* Add Range to Hover (microsoft#1489)

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* Properly handle hovering on `this` (microsoft#1953)

* Bump the github-actions group across 1 directory with 2 updates (microsoft#1959)

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* Fixed document highlight for reference directive (microsoft#1951)

* Several fixes to JS typing of functions and methods (microsoft#1960)

* Update submodule, port 6.0 options defaults (microsoft#1961)

* Reapply microsoft#1951 and microsoft#1960 after bad merge (microsoft#1964)

Co-authored-by: Anders Hejlsberg <andersh@microsoft.com>
Co-authored-by: John Favret <64748847+johnfav03@users.noreply.github.com>

* Update submodule with ES5 removals (microsoft#1963)

* Actually transform KindCommonJSExport in declaration emit (microsoft#1962)

* Quick Info fixes (microsoft#1971)

* Fix various named enum types (microsoft#1973)

* Move change tracker, converters, utils to separate packages (microsoft#1977)

* Consistent rules for mixing `@type`, `@param`, `@return`, `@template` (microsoft#1979)

* Check for identifier before obtaining text of name (microsoft#1984)

* Respect client capabilities for diagnostics (microsoft#1980)

* Store explicitly declared members ahead of inherited members (microsoft#1987)

* Add --checkers to control number of checkers per Program (microsoft#1985)

* Export all types referenced through other exported APIs, enforce (microsoft#1978)

* Switch custom runners from mariner-2.0 to azure-linux-3 (microsoft#1989)

* Use `LocationLink` in go to definition (microsoft#1884)

* Use a different set of commands to detect fourslash test updates (microsoft#1923)

* Skip erasableSyntaxOnly checks for JavaScript files (microsoft#1956)

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* Update submodule for new cherry-picks (microsoft#1996)

* Port TypeScript PR #62604: Propagate variance reliability (microsoft#1916)

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* Only export `@typedef` type aliases in modules (microsoft#1999)

* Bump github/codeql-action from 4.31.0 to 4.31.2 in the github-actions group across 1 directory (microsoft#2005)

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* Hoist @typedef and @import tags to containing scopes that permit them (microsoft#2003)

* Remove concept of "unsupported extensions", clean up test skips  (microsoft#2004)

* Update golangci-lint, fix issues, modernize (microsoft#1981)

* Implement more handling of client capabilities (microsoft#1998)

* Add docs to signature help (microsoft#2009)

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

* Fix unused identifier diags, LSP tag diags (microsoft#2007)

* fix(2015): abstract property created, overshadowing override (microsoft#2016)

* Always check refCount after acquiring lock (microsoft#1986)

* Delete resolver unit tests (microsoft#2008)

* Fix missing parent for `Expression` in `TypeParameterDeclaration` (microsoft#2017)

* Add missing nil check in `getCompletionItemActions` (microsoft#2018)

* Fix crash in find-all-refs on `exports.xxx` in .js file (microsoft#2023)

* Properly include JSX attributes in find-all-references (microsoft#2025)

* Fix crash by removing `getNameFromImportDeclaration` in favor of `Node.Name()` (microsoft#2027)

* Fix losing options from command line in watch mode (microsoft#2024)

* Add issue investigator agent (microsoft#2030)

* Switch 1ESPT pipelines to 1ESPT-AzureLinux3 (microsoft#2031)

* Port inlay hints (microsoft#1705)

* Split "use strict" into separate transformer, fix bugs with prologues (microsoft#2028)

Co-authored-by: Sheetal Nandi <shkamat@microsoft.com>

* Use a more cross-architecture-friendly devcontainer image. (microsoft#2034)

* Fix nil pointer dereference in range formatting (microsoft#1993)

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* Port missing `checkJs` logic (microsoft#2046)

* Ignore reparsed nodes when determining external module indicator (microsoft#2044)

* Fix various fuzzer-caught crashes in the parser (microsoft#2038)

* Fix moduleDetection for node18, fix __esModule in detect=force (microsoft#2045)

* Fix panic in syncmap on loading nil (microsoft#2056)

* Use accessors on `Node` instead of casts and field accesses (microsoft#2052)

* Add locks on concurrent alias following checker accesses under incremental mode (microsoft#2051)

* Don't add `export` modifier to `JSTypeAliasDeclaration` from `@callback` (microsoft#2063)

* Introduce GetECMALineOfPosition to avoid unused rune counting (microsoft#2065)

* Don't add `export` modifier to `KindCommonJSExport` reparsed nodes (microsoft#2066)

* Fix panic in inlay hints for tuple types (microsoft#2040)

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* Accurately recognize fourslash test as submodule (microsoft#2068)

* Implement auto-import code actions, port tests and fix some bugs (microsoft#2053)

* Port tsc --init (microsoft#2033)

* Make CheckerPool iteration concurrent by default (microsoft#2070)

* Use Microsoft build of Go in CI (microsoft#2069)

* Detect Windows junctions with GetFileAttributesEx (microsoft#2013)

* Fix CI cache workflow (microsoft#2071)

* Use information from contextual type in hovers/quick info (microsoft#2073)

* fix(2074): No quick info on function and other similar tokens (microsoft#2078)

* Unify locks used on checkers between exclusive pool borrows and EmitResolver scopes (microsoft#2080)

* Port non-baseline diagnostics tests (microsoft#2079)

* Use SkipTrivia instead of GetRangeOfTokenAtPosition where possible (microsoft#2089)

* Move unreachable checks to checker, allowing more AST reuse (microsoft#2067)

* Fix scanning of valid surrogate pairs (microsoft#2032)

* Fix misplaced parentheses in `Checker.isIndirectCall` (microsoft#2093)

* Various agent mode updates (microsoft#2094)

* Handle configuration changes in LSP for 'typescript.*' options. (microsoft#2088)

* Fix nil pointer dereference in getAdjustedLocation for type-only exports (microsoft#2090)

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* Fix nil pointer dereference in code actions when diagnostic code is nil (microsoft#2091)

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* Fully resolve LSP client caps to non-pointers, pass by context (microsoft#2095)

* Fix hover on `module.exports` (microsoft#2098)

* Accept and document jsdoc diffs, round 1 (microsoft#1426)

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* Port baseline diagnostics tests (microsoft#2097)

* Clean up disk space in CI before running (microsoft#2103)

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* Add GOBIN to PATH in CI (microsoft#2105)

* Make client requests type safe, unmarshal (microsoft#2099)

* Display inherited JSDoc documentation in quick info (microsoft#2111)

* Sort failingTests and manualTests in en-US (microsoft#2113)

* fix(2047): Incomplete declaration emit of callback tag with no return tag (microsoft#2100)

* Fix canHaveSyntheticDefault (microsoft#2101)

* Misc fixes (microsoft#2112)

* chore: fix incorrect function name in comment (microsoft#2109)

Signed-off-by: weifangc <weifangcheng@outlook.jp>

* Fix typedef binding with CJS `exports=` (microsoft#826)

* Provide Program diagnostics as push diags in tsconfig.json (microsoft#2118)

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* Update dependencies (microsoft#2116)

* Remove copilot-setup-steps env var (microsoft#2124)

* Fix panic on negative parameterIndex in type predicate flow analysis (microsoft#2122)

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* Port tests for go to implementation and diff definitions tests (microsoft#2130)

* Partially fix multi-checker diagnostics consistency (microsoft#2134)

* Implement reportStyleChecksAsWarnings (microsoft#2132)

* Include docs on resolved client caps (microsoft#2135)

* Fix dynamic import grammar check (microsoft#2138)

* Refine LSP with our own types, generate more stuff (microsoft#2141)

* Display all symbol meanings in quick info (microsoft#2144)

* Multiproject requests like find all refs, rename and workspace symbols (microsoft#1991)

* Add stringer-alike String methods to non-string LSP enums (microsoft#2148)

* Enable localization (microsoft#2123)

* Port workspace symbols tests (microsoft#2146)

* Update readme, issue template (microsoft#2140)

* Ignore config port (microsoft#1755)

* fix(2157): jsdocfunction param is inferred as implicit any when directly assigned to module.exports (microsoft#2158)

* fixes after merge

* some more fixes

* more errors

* builds

* fmt

* fix nil pointer deref

* fix error messages

---------

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