Fix error message for type-only import of ES module from CJS

src/compiler/checker.ts

@@ -4677,14 +4677,14 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                             if (ext === Extension.Ts || ext === Extension.Js || ext === Extension.Tsx || ext === Extension.Jsx) {
                                 diagnosticDetails = createModeMismatchDetails(currentSourceFile);
                             }
+
+                            const message = overrideHost?.kind === SyntaxKind.ImportDeclaration && overrideHost.importClause?.isTypeOnly ? Diagnostics.Type_only_import_of_an_ECMAScript_module_from_a_CommonJS_module_must_have_a_resolution_mode_attribute :
+                                overrideHost?.kind === SyntaxKind.ImportType ? Diagnostics.Type_import_of_an_ECMAScript_module_from_a_CommonJS_module_must_have_a_resolution_mode_attribute :
+                                Diagnostics.The_current_file_is_a_CommonJS_module_whose_imports_will_produce_require_calls_however_the_referenced_file_is_an_ECMAScript_module_and_cannot_be_imported_with_require_Consider_writing_a_dynamic_import_0_call_instead;
                             diagnostics.add(createDiagnosticForNodeFromMessageChain(
                                 getSourceFileOfNode(errorNode),
                                 errorNode,
-                                chainDiagnosticMessages(
-                                    diagnosticDetails,
-                                    Diagnostics.The_current_file_is_a_CommonJS_module_whose_imports_will_produce_require_calls_however_the_referenced_file_is_an_ECMAScript_module_and_cannot_be_imported_with_require_Consider_writing_a_dynamic_import_0_call_instead,
-                                    moduleReference,
-                                ),
+                                chainDiagnosticMessages(diagnosticDetails, message, moduleReference),
                             ));
                         }
                     }

src/compiler/diagnosticMessages.json

@@ -1818,6 +1818,14 @@
         "code": 1540,
         "reportsDeprecated": true
     },
+    "Type-only import of an ECMAScript module from a CommonJS module must have a 'resolution-mode' attribute.": {
+        "category": "Error",
+        "code": 1541
+    },
+    "Type import of an ECMAScript module from a CommonJS module must have a 'resolution-mode' attribute.": {
+        "category": "Error",
+        "code": 1542
+    },
 
     "The types of '{0}' are incompatible between these types.": {
         "category": "Error",
@@ -8197,6 +8205,14 @@
         "category": "Message",
         "code": 95195
     },
+    "Add 'resolution-mode' import attribute": {
+        "category": "Message",
+        "code": 95196
+    },
+    "Add 'resolution-mode' import attribute to all type-only imports that need it": {
+        "category": "Message",
+        "code": 95197
+    },
 
     "No value exists in scope for the shorthand property '{0}'. Either declare one or provide an initializer.": {
         "category": "Error",

src/harness/fourslashImpl.ts

@@ -3368,8 +3368,8 @@ export class TestState {
         this.verifyTextMatches(this.rangeText(this.getOnlyRange()), !!includeWhiteSpace, expectedText);
     }
 
-    private getOnlyRange() {
-        const ranges = this.getRanges();
+    private getOnlyRange(fileName?: string) {
+        const ranges = fileName ? this.getRangesInFile(fileName) : this.getRanges();
         if (ranges.length !== 1) {
             this.raiseError("Exactly one range should be specified in the testfile.");
         }
@@ -3455,7 +3455,7 @@ export class TestState {
             const change = ts.first(changes);
             assert(change.fileName = this.activeFile.fileName);
             const newText = ts.textChanges.applyChanges(this.getFileContent(this.activeFile.fileName), change.textChanges);
-            const newRange = updateTextRangeForTextChanges(this.getOnlyRange(), change.textChanges);
+            const newRange = updateTextRangeForTextChanges(this.getOnlyRange(this.activeFile.fileName), change.textChanges);
             const actualText = newText.slice(newRange.pos, newRange.end);
             this.verifyTextMatches(actualText, /*includeWhitespace*/ true, newRangeContent);
         }

src/services/_namespaces/ts.codefix.ts

@@ -8,6 +8,7 @@ export * from "../codefixes/addMissingAwait.js";
 export * from "../codefixes/addMissingConst.js";
 export * from "../codefixes/addMissingDeclareProperty.js";
 export * from "../codefixes/addMissingInvocationForDecorator.js";
+export * from "../codefixes/addMissingResolutionModeImportAttribute.js";
 export * from "../codefixes/addNameToNamelessParameter.js";
 export * from "../codefixes/addOptionalPropertyUndefined.js";
 export * from "../codefixes/annotateWithTypeFromJSDoc.js";

src/services/codefixes/addMissingResolutionModeImportAttribute.ts

@@ -0,0 +1,109 @@
+import {
+    codeFixAll,
+    createCodeFixAction,
+    registerCodeFix,
+} from "../_namespaces/ts.codefix.js";
+import {
+    Debug,
+    Diagnostics,
+    factory,
+    findAncestor,
+    getQuotePreference,
+    getTokenAtPosition,
+    isImportDeclaration,
+    isImportTypeNode,
+    LanguageServiceHost,
+    ModuleKind,
+    or,
+    Program,
+    QuotePreference,
+    resolveModuleName,
+    SourceFile,
+    SyntaxKind,
+    textChanges,
+    tryGetModuleSpecifierFromDeclaration,
+    UserPreferences,
+} from "../_namespaces/ts.js";
+
+const fixId = "addMissingResolutionModeImportAttribute";
+const errorCodes = [
+    Diagnostics.Type_only_import_of_an_ECMAScript_module_from_a_CommonJS_module_must_have_a_resolution_mode_attribute.code,
+    Diagnostics.Type_import_of_an_ECMAScript_module_from_a_CommonJS_module_must_have_a_resolution_mode_attribute.code,
+];
+
+registerCodeFix({
+    errorCodes,
+    getCodeActions: function getCodeActionsToAddMissingResolutionModeImportAttribute(context) {
+        const changes = textChanges.ChangeTracker.with(context, t => makeChange(t, context.sourceFile, context.span.start, context.program, context.host, context.preferences));
+        return [createCodeFixAction(fixId, changes, Diagnostics.Add_resolution_mode_import_attribute, fixId, Diagnostics.Add_resolution_mode_import_attribute_to_all_type_only_imports_that_need_it)];
+    },
+    fixIds: [fixId],
+    getAllCodeActions: context => codeFixAll(context, errorCodes, (changes, diag) => makeChange(changes, diag.file, diag.start, context.program, context.host, context.preferences)),
+});
+
+function makeChange(changeTracker: textChanges.ChangeTracker, sourceFile: SourceFile, pos: number, program: Program, host: LanguageServiceHost, preferences: UserPreferences) {
+    const token = getTokenAtPosition(sourceFile, pos);
+    const importNode = findAncestor(token, or(isImportDeclaration, isImportTypeNode))!;
+    Debug.assert(!!importNode, "Expected position to be owned by an ImportDeclaration or ImportType.");
+    const useSingleQuotes = getQuotePreference(sourceFile, preferences) === QuotePreference.Single;
+    const moduleSpecifier = tryGetModuleSpecifierFromDeclaration(importNode);
+    const canUseImportMode = !moduleSpecifier || (resolveModuleName(
+        moduleSpecifier.text,
+        sourceFile.fileName,
+        program.getCompilerOptions(),
+        host,
+        program.getModuleResolutionCache(),
+        /*redirectedReference*/ undefined,
+        ModuleKind.ESNext,
+    ).resolvedModule?.resolvedFileName === program.getResolvedModuleFromModuleSpecifier(
+        moduleSpecifier,
+        sourceFile,
+    )?.resolvedModule?.resolvedFileName);
+
+    const attributes = importNode.attributes
+        ? factory.updateImportAttributes(
+            importNode.attributes,
+            factory.createNodeArray([
+                ...importNode.attributes.elements,
+                factory.createImportAttribute(
+                    factory.createStringLiteral("resolution-mode", useSingleQuotes),
+                    factory.createStringLiteral(canUseImportMode ? "import" : "require", useSingleQuotes),
+                ),
+            ], importNode.attributes.elements.hasTrailingComma),
+            importNode.attributes.multiLine,
+        )
+        : factory.createImportAttributes(
+            factory.createNodeArray([
+                factory.createImportAttribute(
+                    factory.createStringLiteral("resolution-mode", useSingleQuotes),
+                    factory.createStringLiteral(canUseImportMode ? "import" : "require", useSingleQuotes),
+                ),
+            ]),
+        );
+    if (importNode.kind === SyntaxKind.ImportDeclaration) {
+        changeTracker.replaceNode(
+            sourceFile,
+            importNode,
+            factory.updateImportDeclaration(
+                importNode,
+                importNode.modifiers,
+                importNode.importClause,
+                importNode.moduleSpecifier,
+                attributes,
+            ),
+        );
+    }
+    else {
+        changeTracker.replaceNode(
+            sourceFile,
+            importNode,
+            factory.updateImportTypeNode(
+                importNode,
+                importNode.argument,
+                attributes,
+                importNode.qualifier,
+                importNode.typeArguments,
+            ),
+        );
+    }
+}

tests/baselines/reference/tsbuildWatch/moduleResolution/resolves-specifier-in-output-declaration-file-from-referenced-project-correctly-with-cts-and-mts-extensions.js

@@ -396,7 +396,7 @@ File '/user/username/projects/myproject/packages/pkg2/build/const.d.cts' exists
 File '/a/lib/package.json' does not exist.
 File '/a/package.json' does not exist.
 File '/package.json' does not exist.
-packages/pkg1/index.ts:1:29 - error TS1479: The current file is a CommonJS module whose imports will produce 'require' calls; however, the referenced file is an ECMAScript module and cannot be imported with 'require'. Consider writing a dynamic 'import("pkg2")' call instead.
+packages/pkg1/index.ts:1:29 - error TS1541: Type-only import of an ECMAScript module from a CommonJS module must have a `"resolution-mode": "import"` attribute.
   To convert this file to an ECMAScript module, change its file extension to '.mts' or create a local package.json file with `{ "type": "module" }`.
 
 1 import type { TheNum } from 'pkg2'
@@ -631,7 +631,7 @@ File '/user/username/projects/myproject/packages/pkg2/build/const.d.cts' exists
 File '/a/lib/package.json' does not exist.
 File '/a/package.json' does not exist.
 File '/package.json' does not exist.
-packages/pkg1/index.ts:1:29 - error TS1479: The current file is a CommonJS module whose imports will produce 'require' calls; however, the referenced file is an ECMAScript module and cannot be imported with 'require'. Consider writing a dynamic 'import("pkg2")' call instead.
+packages/pkg1/index.ts:1:29 - error TS1541: Type-only import of an ECMAScript module from a CommonJS module must have a `"resolution-mode": "import"` attribute.
   To convert this file to an ECMAScript module, change its file extension to '.mts' or create a local package.json file with `{ "type": "module" }`.
 
 1 import type { TheNum } from 'pkg2'

tests/baselines/reference/typeOnlyESMImportFromCJS.errors.txt

@@ -0,0 +1,19 @@
+common.cts(1,21): error TS1541: Type-only import of an ECMAScript module from a CommonJS module must have a 'resolution-mode' attribute.
+common.cts(4,25): error TS1542: Type import of an ECMAScript module from a CommonJS module must have a 'resolution-mode' attribute.
+
+
+==== module.mts (0 errors) ====
+    export {};
+
+==== common.cts (2 errors) ====
+    import type {} from "./module.mts";
+                        ~~~~~~~~~~~~~~
+!!! error TS1541: Type-only import of an ECMAScript module from a CommonJS module must have a 'resolution-mode' attribute.
+    import type {} from "./module.mts" with { "resolution-mode": "import" };
+    import type {} from "./module.mts" with { "resolution-mode": "require" };
+    type _1 = typeof import("./module.mts");
+                            ~~~~~~~~~~~~~~
+!!! error TS1542: Type import of an ECMAScript module from a CommonJS module must have a 'resolution-mode' attribute.
+    type _2 = typeof import("./module.mts", { with: { "resolution-mode": "import" } });
+    type _3 = typeof import("./module.mts", { with: { "resolution-mode": "require" } });
+

tests/baselines/reference/typeOnlyESMImportFromCJS.js

@@ -0,0 +1,19 @@
+//// [tests/cases/conformance/externalModules/typeOnly/typeOnlyESMImportFromCJS.ts] ////
+
+//// [module.mts]
+export {};
+
+//// [common.cts]
+import type {} from "./module.mts";
+import type {} from "./module.mts" with { "resolution-mode": "import" };
+import type {} from "./module.mts" with { "resolution-mode": "require" };
+type _1 = typeof import("./module.mts");
+type _2 = typeof import("./module.mts", { with: { "resolution-mode": "import" } });
+type _3 = typeof import("./module.mts", { with: { "resolution-mode": "require" } });
+
+
+//// [module.mjs]
+export {};
+//// [common.cjs]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });

tests/baselines/reference/typeOnlyESMImportFromCJS.symbols

@@ -0,0 +1,19 @@
+//// [tests/cases/conformance/externalModules/typeOnly/typeOnlyESMImportFromCJS.ts] ////
+
+=== module.mts ===
+
+export {};
+
+=== common.cts ===
+import type {} from "./module.mts";
+import type {} from "./module.mts" with { "resolution-mode": "import" };
+import type {} from "./module.mts" with { "resolution-mode": "require" };
+type _1 = typeof import("./module.mts");
+>_1 : Symbol(_1, Decl(common.cts, 2, 73))
+
+type _2 = typeof import("./module.mts", { with: { "resolution-mode": "import" } });
+>_2 : Symbol(_2, Decl(common.cts, 3, 40))
+
+type _3 = typeof import("./module.mts", { with: { "resolution-mode": "require" } });
+>_3 : Symbol(_3, Decl(common.cts, 4, 83))
+

tests/baselines/reference/typeOnlyESMImportFromCJS.types

@@ -0,0 +1,22 @@
+//// [tests/cases/conformance/externalModules/typeOnly/typeOnlyESMImportFromCJS.ts] ////
+
+=== module.mts ===
+
+export {};
+
+=== common.cts ===
+import type {} from "./module.mts";
+import type {} from "./module.mts" with { "resolution-mode": "import" };
+import type {} from "./module.mts" with { "resolution-mode": "require" };
+type _1 = typeof import("./module.mts");
+>_1 : typeof import("module", { with: { "resolution-mode": "import" } })
+>   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+type _2 = typeof import("./module.mts", { with: { "resolution-mode": "import" } });
+>_2 : typeof import("module", { with: { "resolution-mode": "import" } })
+>   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+type _3 = typeof import("./module.mts", { with: { "resolution-mode": "require" } });
+>_3 : typeof import("module", { with: { "resolution-mode": "import" } })
+>   : ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+

tests/cases/conformance/externalModules/typeOnly/typeOnlyESMImportFromCJS.ts

@@ -0,0 +1,12 @@
+// @module: nodenext
+
+// @Filename: module.mts
+export {};
+
+// @Filename: common.cts
+import type {} from "./module.mts";
+import type {} from "./module.mts" with { "resolution-mode": "import" };
+import type {} from "./module.mts" with { "resolution-mode": "require" };
+type _1 = typeof import("./module.mts");
+type _2 = typeof import("./module.mts", { with: { "resolution-mode": "import" } });
+type _3 = typeof import("./module.mts", { with: { "resolution-mode": "require" } });

tests/cases/fourslash/codeFixMissingResolutionModeImportAttribute.ts

@@ -0,0 +1,57 @@
+/// <reference path='fourslash.ts' />
+
+// @module: nodenext
+
+// @Filename: /package.json
+//// { "type": "module" }
+
+// @Filename: /module.ts
+//// export {};
+
+// @Filename: /common1.cts
+//// [|import type { } from "./module.ts"/*1*/;|]
+
+// @Filename: /common2.cts
+//// [|import type { } from "./module.ts"/*2*/ with { "type": "typescript" };|]
+
+// @Filename: /common3.cts
+//// [|import type { } from "./module"/*3*/;|]
+
+// @Filename: /common4.cts
+//// [|type _1 = typeof import("./module.ts"/*4*/);|]
+
+goTo.marker("1");
+verify.codeFix({
+  index: 0,
+  errorCode: ts.Diagnostics.Type_only_import_of_an_ECMAScript_module_from_a_CommonJS_module_must_have_a_resolution_mode_attribute.code,
+  applyChanges: false,
+  description: "Add 'resolution-mode' import attribute",
+  newRangeContent: `import type { } from "./module.ts" with { "resolution-mode": "import" };`,
+});
+
+goTo.marker("2");
+verify.codeFix({
+  index: 0,
+  errorCode: ts.Diagnostics.Type_only_import_of_an_ECMAScript_module_from_a_CommonJS_module_must_have_a_resolution_mode_attribute.code,
+  applyChanges: false,
+  description: "Add 'resolution-mode' import attribute",
+  newRangeContent: `import type { } from "./module.ts" with { "type": "typescript", "resolution-mode": "import" };`,
+});
+
+goTo.marker("3");
+verify.codeFix({
+  index: 0,
+  errorCode: ts.Diagnostics.Type_only_import_of_an_ECMAScript_module_from_a_CommonJS_module_must_have_a_resolution_mode_attribute.code,
+  applyChanges: false,
+  description: "Add 'resolution-mode' import attribute",
+  newRangeContent: `import type { } from "./module" with { "resolution-mode": "require" };`,
+});
+
+goTo.marker("4");
+verify.codeFix({
+  index: 0,
+  errorCode: ts.Diagnostics.Type_import_of_an_ECMAScript_module_from_a_CommonJS_module_must_have_a_resolution_mode_attribute.code,
+  applyChanges: false,
+  description: "Add 'resolution-mode' import attribute",
+  newRangeContent: `type _1 = typeof import("./module.ts", { with: { "resolution-mode": "import" } });`,
+});