fix(61167): Incorrect "Import may be converted to a default import" autofix for import export (#61171)

Author: a-tarasyuk

src/services/suggestionDiagnostics.ts

@@ -25,6 +25,7 @@ import {
     getFunctionFlags,
     hasInitializer,
     hasPropertyAccessExpressionWithName,
+    hasSyntacticModifier,
     Identifier,
     importFromModuleSpecifier,
     isAsyncFunction,
@@ -36,6 +37,7 @@ import {
     isFunctionExpression,
     isFunctionLike,
     isIdentifier,
+    isImportEqualsDeclaration,
     isPropertyAccessExpression,
     isRequireCall,
     isReturnStatement,
@@ -44,6 +46,7 @@ import {
     isVariableDeclaration,
     isVariableStatement,
     MethodDeclaration,
+    ModifierFlags,
     ModuleKind,
     Node,
     NodeFlags,
@@ -85,6 +88,7 @@ export function computeSuggestionDiagnostics(sourceFile: SourceFile, program: Pr
     if (getAllowSyntheticDefaultImports(program.getCompilerOptions())) {
         for (const moduleSpecifier of sourceFile.imports) {
             const importNode = importFromModuleSpecifier(moduleSpecifier);
+            if (isImportEqualsDeclaration(importNode) && hasSyntacticModifier(importNode, ModifierFlags.Export)) continue;
             const name = importNameForConvertToDefaultImport(importNode);
             if (!name) continue;
             const module = program.getResolvedModuleFromModuleSpecifier(moduleSpecifier, sourceFile)?.resolvedModule;

tests/cases/fourslash/codeFixUseDefaultImport.ts

@@ -21,6 +21,9 @@
 ////import * as n from "./non-existant";
 ////n;
 
+// @Filename: /f.ts
+////export import [|foo|] = require("./a");
+
 for (const file of ["/b.ts", "/c.ts"]) {
     goTo.file(file);
 
@@ -38,7 +41,7 @@ a;`,
     });
 }
 
-for (const file of ["/d.ts", "/e.ts"]) {
+for (const file of ["/d.ts", "/e.ts", "/f.ts"]) {
     goTo.file(file);
     verify.getSuggestionDiagnostics([]);
 }