Exclude top-level imports from document symbols (#64160)

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

Author: Copilot

tsc/internal/fourslash/tests/documentSymbolTopLevelImports_test.go

@@ -0,0 +1,27 @@
+package fourslash_test
+
+import (
+	"testing"
+
+	"github.com/microsoft/TypeScript/tsc/internal/fourslash"
+	"github.com/microsoft/TypeScript/tsc/internal/testutil"
+)
+
+func TestDocumentSymbolTopLevelImports(t *testing.T) {
+	t.Parallel()
+	defer testutil.RecoverAndFail(t, "Panic on fourslash test")
+	const content = `/** @typedef {number} ImportedType */
+import DefaultComponent from "./component";
+/** @callback ImportedCallback
+ * @param {string} value
+ * @returns {number}
+ */
+import * as utils from "./utils";
+import { value, original as renamed } from "./values";
+import type { Options } from "./types";
+
+const local = 1;`
+	f, done := fourslash.NewFourslash(t, nil /*capabilities*/, content)
+	defer done()
+	f.VerifyBaselineDocumentSymbol(t)
+}

tsc/internal/ls/symbols.go

@@ -161,6 +161,9 @@ func (l *LanguageService) getDocumentSymbolsForChildren(ctx context.Context, nod
 				}
 			}
 		}
+		if node.Parent.Kind == ast.KindSourceFile && ast.IsImportOrImportEqualsDeclaration(node) {
+			return false
+		}
 		switch node.Kind {
 		case ast.KindClassDeclaration, ast.KindClassExpression, ast.KindInterfaceDeclaration, ast.KindEnumDeclaration:
 			if ast.IsClassLike(node) && ast.GetDeclarationName(node) != "" {

tsc/testdata/baselines/reference/fourslash/documentSymbols/documentSymbolTopLevelImports.baseline

@@ -0,0 +1,18 @@
+// === Document Symbols ===
+// === /documentSymbolTopLevelImports.ts ===
+// /** <|@typedef {number} [|{| name: ImportedType, kind: Class |}ImportedType|]|> */
+// import DefaultComponent from "./component";
+// /** <|@callback [|{| name: ImportedCallback, kind: Class |}ImportedCallback|]
+//  * @param {string} value
+//  * @returns {number}
+//  |>*/
+// import * as utils from "./utils";
+// import { value, original as renamed } from "./values";
+// import type { Options } from "./types";
+// 
+// const <|[|{| name: local, kind: Variable |}local|] = 1|>;
+
+// === Details ===
+(Class) ImportedType
+(Class) ImportedCallback
+(Variable) local

tsc/testdata/baselines/reference/fourslash/documentSymbols/navigationBarImports.baseline

@@ -1,11 +1,4 @@
 // === Document Symbols ===
-// === /navigationBarImports.ts ===
-// import <|[|{| name: a, kind: Variable |}a|]|>, {<|[|{| name: b, kind: Variable |}b|]|>} from "m";
-// <|import [|{| name: c, kind: Variable |}c|] = require("m");|>
-// import <|* as [|{| name: d, kind: Variable |}d|]|> from "m";
+
 
 // === Details ===
-(Variable) a
-(Variable) b
-(Variable) c
-(Variable) d

tsc/testdata/baselines/reference/fourslash/documentSymbols/navigationBarItemsExports.baseline

@@ -4,11 +4,10 @@
 // 
 // export { <|b as [|{| name: B, kind: Variable |}B|]|> } from "a" 
 // 
-// <|export import [|{| name: e, kind: Variable |}e|] = require("a");|>
+// export import e = require("a");
 // 
 // export * from "a"; // no bindings here
 
 // === Details ===
 (Variable) a
 (Variable) B
-(Variable) e

tsc/testdata/baselines/reference/fourslash/documentSymbols/navigationBarItemsImports.baseline

@@ -1,23 +1,4 @@
 // === Document Symbols ===
-// === /navigationBarItemsImports.ts ===
-// import <|[|{| name: d1, kind: Variable |}d1|]|> from "a";
-// 
-// import { <|[|{| name: a, kind: Variable |}a|]|> } from "a";
-// 
-// import { <|b as [|{| name: B, kind: Variable |}B|]|> } from "a" 
-// 
-// import <|[|{| name: d2, kind: Variable |}d2|]|>, { <|[|{| name: c, kind: Variable |}c|]|>, <|d as [|{| name: D, kind: Variable |}D|]|> } from "a" 
-// 
-// <|import [|{| name: e, kind: Variable |}e|] = require("a");|>
-// 
-// import <|* as [|{| name: ns, kind: Variable |}ns|]|> from "a";
+
 
 // === Details ===
-(Variable) d1
-(Variable) a
-(Variable) B
-(Variable) d2
-(Variable) c
-(Variable) D
-(Variable) e
-(Variable) ns