Merge branch 'main' into gabritto/issue46609

Author: gabritto

src/compiler/checker.ts

@@ -16013,7 +16013,7 @@ namespace ts {
                         const declarations = concatenate(leftProp.declarations, rightProp.declarations);
                         const flags = SymbolFlags.Property | (leftProp.flags & SymbolFlags.Optional);
                         const result = createSymbol(flags, leftProp.escapedName);
-                        result.type = getUnionType([getTypeOfSymbol(leftProp), removeMissingOrUndefinedType(rightType)]);
+                        result.type = getUnionType([getTypeOfSymbol(leftProp), removeMissingOrUndefinedType(rightType)], UnionReduction.Subtype);
                         result.leftSpread = leftProp;
                         result.rightSpread = rightProp;
                         result.declarations = declarations;
@@ -21221,9 +21221,10 @@ namespace ts {
                         (isCallSignatureDeclaration(param.parent) || isMethodSignature(param.parent) || isFunctionTypeNode(param.parent)) &&
                         param.parent.parameters.indexOf(param) > -1 &&
                         (resolveName(param, param.name.escapedText, SymbolFlags.Type, undefined, param.name.escapedText, /*isUse*/ true) ||
-                         param.name.originalKeywordKind && isTypeNodeKind(param.name.originalKeywordKind))) {
+                        param.name.originalKeywordKind && isTypeNodeKind(param.name.originalKeywordKind))) {
                         const newName = "arg" + param.parent.parameters.indexOf(param);
-                        errorOrSuggestion(noImplicitAny, declaration, Diagnostics.Parameter_has_a_name_but_no_type_Did_you_mean_0_Colon_1, newName, declarationNameToString(param.name));
+                        const typeName = declarationNameToString(param.name) + (param.dotDotDotToken ? "[]" : "");
+                        errorOrSuggestion(noImplicitAny, declaration, Diagnostics.Parameter_has_a_name_but_no_type_Did_you_mean_0_Colon_1, newName, typeName);
                         return;
                     }
                     diagnostic = (declaration as ParameterDeclaration).dotDotDotToken ?

src/compiler/commandLineParser.ts

@@ -29,6 +29,7 @@ namespace ts {
         ["es2019", "lib.es2019.d.ts"],
         ["es2020", "lib.es2020.d.ts"],
         ["es2021", "lib.es2021.d.ts"],
+        ["es2022", "lib.es2022.d.ts"],
         ["esnext", "lib.esnext.d.ts"],
         // Host only
         ["dom", "lib.dom.d.ts"],
@@ -72,12 +73,16 @@ namespace ts {
         ["es2021.string", "lib.es2021.string.d.ts"],
         ["es2021.weakref", "lib.es2021.weakref.d.ts"],
         ["es2021.intl", "lib.es2021.intl.d.ts"],
-        ["esnext.array", "lib.es2019.array.d.ts"],
+        ["es2022.array", "lib.es2022.array.d.ts"],
+        ["es2022.error", "lib.es2022.error.d.ts"],
+        ["es2022.object", "lib.es2022.object.d.ts"],
+        ["es2022.string", "lib.es2022.string.d.ts"],
+        ["esnext.array", "lib.es2022.array.d.ts"],
         ["esnext.symbol", "lib.es2019.symbol.d.ts"],
         ["esnext.asynciterable", "lib.es2018.asynciterable.d.ts"],
         ["esnext.intl", "lib.esnext.intl.d.ts"],
         ["esnext.bigint", "lib.es2020.bigint.d.ts"],
-        ["esnext.string", "lib.es2021.string.d.ts"],
+        ["esnext.string", "lib.es2022.string.d.ts"],
         ["esnext.promise", "lib.es2021.promise.d.ts"],
         ["esnext.weakref", "lib.es2021.weakref.d.ts"]
     ];
@@ -314,6 +319,7 @@ namespace ts {
             es2019: ScriptTarget.ES2019,
             es2020: ScriptTarget.ES2020,
             es2021: ScriptTarget.ES2021,
+            es2022: ScriptTarget.ES2022,
             esnext: ScriptTarget.ESNext,
         })),
         affectsSourceFile: true,

src/compiler/moduleSpecifiers.ts

@@ -707,13 +707,15 @@ namespace ts.moduleSpecifiers {
             if (host.fileExists(packageJsonPath)) {
                 const packageJsonContent = JSON.parse(host.readFile!(packageJsonPath)!);
                 // TODO: Inject `require` or `import` condition based on the intended import mode
-                const fromExports = packageJsonContent.exports && typeof packageJsonContent.name === "string" ? tryGetModuleNameFromExports(options, path, packageRootPath, packageJsonContent.name, packageJsonContent.exports, ["node", "types"]) : undefined;
-                if (fromExports) {
-                    const withJsExtension = !hasTSFileExtension(fromExports.moduleFileToTry) ? fromExports : { moduleFileToTry: removeFileExtension(fromExports.moduleFileToTry) + tryGetJSExtensionForFile(fromExports.moduleFileToTry, options) };
-                    return { ...withJsExtension, verbatimFromExports: true };
-                }
-                if (packageJsonContent.exports) {
-                    return { moduleFileToTry: path, blockedByExports: true };
+                if (getEmitModuleResolutionKind(options) === ModuleResolutionKind.Node12 || getEmitModuleResolutionKind(options) === ModuleResolutionKind.NodeNext) {
+                    const fromExports = packageJsonContent.exports && typeof packageJsonContent.name === "string" ? tryGetModuleNameFromExports(options, path, packageRootPath, packageJsonContent.name, packageJsonContent.exports, ["node", "types"]) : undefined;
+                    if (fromExports) {
+                        const withJsExtension = !hasTSFileExtension(fromExports.moduleFileToTry) ? fromExports : { moduleFileToTry: removeFileExtension(fromExports.moduleFileToTry) + tryGetJSExtensionForFile(fromExports.moduleFileToTry, options) };
+                        return { ...withJsExtension, verbatimFromExports: true };
+                    }
+                    if (packageJsonContent.exports) {
+                        return { moduleFileToTry: path, blockedByExports: true };
+                    }
                 }
                 const versionPaths = packageJsonContent.typesVersions
                     ? getPackageJsonTypesVersionsPaths(packageJsonContent.typesVersions)

src/compiler/types.ts

@@ -6268,6 +6268,7 @@ namespace ts {
         ES2019 = 6,
         ES2020 = 7,
         ES2021 = 8,
+        ES2022 = 9,
         ESNext = 99,
         JSON = 100,
         Latest = ESNext,
@@ -6725,15 +6726,16 @@ namespace ts {
         ContainsTypeScript = 1 << 0,
         ContainsJsx = 1 << 1,
         ContainsESNext = 1 << 2,
-        ContainsES2021 = 1 << 3,
-        ContainsES2020 = 1 << 4,
-        ContainsES2019 = 1 << 5,
-        ContainsES2018 = 1 << 6,
-        ContainsES2017 = 1 << 7,
-        ContainsES2016 = 1 << 8,
-        ContainsES2015 = 1 << 9,
-        ContainsGenerator = 1 << 10,
-        ContainsDestructuringAssignment = 1 << 11,
+        ContainsES2022 = 1 << 3,
+        ContainsES2021 = 1 << 4,
+        ContainsES2020 = 1 << 5,
+        ContainsES2019 = 1 << 6,
+        ContainsES2018 = 1 << 7,
+        ContainsES2017 = 1 << 8,
+        ContainsES2016 = 1 << 9,
+        ContainsES2015 = 1 << 10,
+        ContainsGenerator = 1 << 11,
+        ContainsDestructuringAssignment = 1 << 12,
 
         // Markers
         // - Flags used to indicate that a subtree contains a specific transformation.
@@ -6762,6 +6764,7 @@ namespace ts {
         AssertTypeScript = ContainsTypeScript,
         AssertJsx = ContainsJsx,
         AssertESNext = ContainsESNext,
+        AssertES2022 = ContainsES2022,
         AssertES2021 = ContainsES2021,
         AssertES2020 = ContainsES2020,
         AssertES2019 = ContainsES2019,

src/compiler/utilities.ts

@@ -606,6 +606,7 @@ namespace ts {
                 AsyncIterableIterator: emptyArray,
                 AsyncGenerator: emptyArray,
                 AsyncGeneratorFunction: emptyArray,
+                NumberFormat: ["formatToParts"]
             },
             es2019: {
                 Array: ["flat", "flatMap"],
@@ -627,8 +628,21 @@ namespace ts {
                 PromiseConstructor: ["any"],
                 String: ["replaceAll"]
             },
-            esnext: {
-                NumberFormat: ["formatToParts"]
+            es2022: {
+                Array: ["at"],
+                String: ["at"],
+                Int8Array: ["at"],
+                Uint8Array: ["at"],
+                Uint8ClampedArray: ["at"],
+                Int16Array: ["at"],
+                Uint16Array: ["at"],
+                Int32Array: ["at"],
+                Uint32Array: ["at"],
+                Float32Array: ["at"],
+                Float64Array: ["at"],
+                BigInt64Array: ["at"],
+                BigUint64Array: ["at"],
+                ObjectConstructor: ["hasOwn"]
             }
         };
     }

src/compiler/utilitiesPublic.ts

@@ -14,6 +14,8 @@ namespace ts {
         switch (getEmitScriptTarget(options)) {
             case ScriptTarget.ESNext:
                 return "lib.esnext.full.d.ts";
+            case ScriptTarget.ES2022:
+                return "lib.es2022.full.d.ts";
             case ScriptTarget.ES2021:
                 return "lib.es2021.full.d.ts";
             case ScriptTarget.ES2020:

src/lib/es2022.array.d.ts

@@ -0,0 +1,103 @@
+interface Array<T> {
+    /**
+     * Returns the item located at the specified index.
+     * @param index The zero-based index of the desired code unit. A negative index will count back from the last item.
+     */
+    at(index: number): T | undefined;
+}
+
+interface ReadonlyArray<T> {
+    /**
+     * Returns the item located at the specified index.
+     * @param index The zero-based index of the desired code unit. A negative index will count back from the last item.
+     */
+    at(index: number): T | undefined;
+}
+
+interface Int8Array {
+    /**
+     * Returns the item located at the specified index.
+     * @param index The zero-based index of the desired code unit. A negative index will count back from the last item.
+     */
+    at(index: number): number | undefined;
+}
+
+interface Uint8Array {
+    /**
+     * Returns the item located at the specified index.
+     * @param index The zero-based index of the desired code unit. A negative index will count back from the last item.
+     */
+    at(index: number): number | undefined;
+}
+
+interface Uint8ClampedArray {
+    /**
+     * Returns the item located at the specified index.
+     * @param index The zero-based index of the desired code unit. A negative index will count back from the last item.
+     */
+    at(index: number): number | undefined;
+}
+
+interface Int16Array {
+    /**
+     * Returns the item located at the specified index.
+     * @param index The zero-based index of the desired code unit. A negative index will count back from the last item.
+     */
+    at(index: number): number | undefined;
+}
+
+interface Uint16Array {
+    /**
+     * Returns the item located at the specified index.
+     * @param index The zero-based index of the desired code unit. A negative index will count back from the last item.
+     */
+    at(index: number): number | undefined;
+}
+
+interface Int32Array {
+    /**
+     * Returns the item located at the specified index.
+     * @param index The zero-based index of the desired code unit. A negative index will count back from the last item.
+     */
+    at(index: number): number | undefined;
+}
+
+interface Uint32Array {
+    /**
+     * Returns the item located at the specified index.
+     * @param index The zero-based index of the desired code unit. A negative index will count back from the last item.
+     */
+    at(index: number): number | undefined;
+}
+
+interface Float32Array {
+    /**
+     * Returns the item located at the specified index.
+     * @param index The zero-based index of the desired code unit. A negative index will count back from the last item.
+     */
+    at(index: number): number | undefined;
+}
+
+interface Float64Array {
+    /**
+     * Returns the item located at the specified index.
+     * @param index The zero-based index of the desired code unit. A negative index will count back from the last item.
+     */
+    at(index: number): number | undefined;
+}
+
+interface BigInt64Array {
+    /**
+     * Returns the item located at the specified index.
+     * @param index The zero-based index of the desired code unit. A negative index will count back from the last item.
+     */
+    at(index: number): bigint | undefined;
+}
+
+interface BigUint64Array {
+    /**
+     * Returns the item located at the specified index.
+     * @param index The zero-based index of the desired code unit. A negative index will count back from the last item.
+     */
+    at(index: number): bigint | undefined;
+}

src/lib/es2022.d.ts

@@ -0,0 +1,5 @@
+/// <reference lib="es2021" />
+/// <reference lib="es2022.array" />
+/// <reference lib="es2022.error" />
+/// <reference lib="es2022.object" />
+/// <reference lib="es2022.string" />

src/lib/es2022.error.d.ts

@@ -0,0 +1,8 @@
+interface ErrorOptions {
+  cause?: Error;
+}
+
+interface ErrorConstructor {
+  new(message?: string, options?: ErrorOptions): Error;
+  (message?: string, options?: ErrorOptions): Error;
+}

src/lib/es2022.full.d.ts

@@ -0,0 +1,5 @@
+/// <reference lib="es2022" />
+/// <reference lib="dom" />
+/// <reference lib="webworker.importscripts" />
+/// <reference lib="scripthost" />
+/// <reference lib="dom.iterable" />