chore: Update prettier v3.9 (#18147)

Gulpfile.ts

@@ -109,11 +109,7 @@ async function generateHelpers(
 }
 
 type TypesHelperKind =
-  | "asserts"
+  "asserts" | "ast-types" | "builders" | "constants" | "validators";
-  | "ast-types"
-  | "builders"
-  | "constants"
-  | "validators";
 
 function generateTypeHelpers(
   helperKind: TypesHelperKind,

eslint/babel-eslint-plugin-development/src/rules/no-deprecated-clone.ts

@@ -14,9 +14,10 @@ export default {
         const scope = context.sourceCode.getScope(node);
 
         const origin = getReferenceOrigin(callee, scope);
-        if (
+        if (!(
-          !(origin && (origin.kind === "import" || origin.kind === "property"))
+          origin &&
-        )
+          (origin.kind === "import" || origin.kind === "property")
+        ))
           return;
 
         const { name } = origin;

eslint/babel-eslint-plugin-development/src/rules/no-undefined-identifier.ts

@@ -24,9 +24,10 @@ export default {
         const scope = context.sourceCode.getScope(node);
 
         const origin = getReferenceOrigin(callee, scope);
-        if (
+        if (!(
-          !(origin && (origin.kind === "import" || origin.kind === "property"))
+          origin &&
-        )
+          (origin.kind === "import" || origin.kind === "property")
+        ))
           return;
 
         const { name } = origin;

eslint/babel-eslint-plugin-development/src/rules/plugin-name.ts

@@ -44,9 +44,7 @@ export default {
 
     function functionVisitor(
       node: (
-        | FunctionDeclaration
+        FunctionDeclaration | FunctionExpression | ArrowFunctionExpression
-        | FunctionExpression
-        | ArrowFunctionExpression
       ) &
         Rule.NodeParentExtension,
     ) {

eslint/babel-eslint-plugin-development/src/utils/get-reference-origin.ts

@@ -91,9 +91,7 @@ export default function getReferenceOrigin(
           // @ts-expect-error upstream typing issue: https://github.com/eslint/eslint/pull/20798
           index: definition.index,
           functionNode: definition.node as (
-            | ArrowFunctionExpression
+            ArrowFunctionExpression | FunctionDeclaration | FunctionExpression
-            | FunctionDeclaration
-            | FunctionExpression
           ) &
             Rule.NodeParentExtension,
           name: "",
@@ -188,8 +186,7 @@ function getPatternPath(node: Identifier & Rule.NodeParentExtension) {
     }
   } while (
     (current = current.parent.parent as
-      | (Node & Rule.NodeParentExtension)
+      (Node & Rule.NodeParentExtension) | null)
-      | null)
   );
 
   return path;

package.json

@@ -77,7 +77,7 @@
     "open": "^11.0.0",
     "p-limit": "^7.2.0",
     "pkg-pr-new": "^0.0.54",
-    "prettier": "^3.8.1",
+    "prettier": "^3.9.5",
     "publint": "^0.3.17",
     "rollup": "^4.18.0",
     "rollup-plugin-dts": "patch:rollup-plugin-dts@npm%3A6.1.0#~/.yarn/patches/rollup-plugin-dts-npm-6.1.0-6d41e665a7.patch",

packages/babel-core/src/config/caching.ts

@@ -371,12 +371,7 @@ function makeSimpleConfigurator(
 // Types are limited here so that in the future these values can be used
 // as part of Babel's caching logic.
 export type SimpleType =
-  | string
+  string | boolean | number | null | undefined | Promise<SimpleType>;
-  | boolean
-  | number
-  | null
-  | undefined
-  | Promise<SimpleType>;
 export function assertSimpleType(value: unknown): SimpleType {
   if (isThenable(value)) {
     throw new Error(

packages/babel-core/src/config/validation/options.ts

@@ -316,9 +316,7 @@ export type RootInputSourceMapOption = InputSourceMap | boolean;
 export type RootMode = "root" | "upward" | "upward-optional";
 
 export type TargetsListOrObject =
-  | Targets
+  Targets | InputTargets | InputTargets["browsers"];
-  | InputTargets
-  | InputTargets["browsers"];
 
 export type OptionsSource =
   | "arguments"

packages/babel-generator/src/buffer.ts

@@ -289,7 +289,7 @@ export default class Buffer {
   }
 
   hasContent(): boolean {
-    return this._last !== 0 /*|| this._queuedChar !== 0*/;
+    return this._last !== 0; /*|| this._queuedChar !== 0*/
   }
 
   /**

packages/babel-generator/src/generators/methods.ts

@@ -137,9 +137,7 @@ export function _methodHead(this: Printer, node: t.Method | t.TSDeclareMethod) {
 export function _predicate(
   this: Printer,
   node:
-    | t.FunctionDeclaration
+    t.FunctionDeclaration | t.FunctionExpression | t.ArrowFunctionExpression,
-    | t.FunctionExpression
-    | t.ArrowFunctionExpression,
   noLineTerminatorAfter?: boolean,
 ) {
   if (node.predicate) {
@@ -163,7 +161,7 @@ export function _functionHead(
       // We prevent inner comments from being printed here,
       // so that they are always consistently printed in the
       // same place regardless of the function type.
-      this._innerCommentsState = 0 /* INNER_COMMENT_STATE.DISALLOWED */;
+      this._innerCommentsState = 0; /* INNER_COMMENT_STATE.DISALLOWED */
     }
     this.space();
   }
@@ -173,7 +171,7 @@ export function _functionHead(
       // We prevent inner comments from being printed here,
       // so that they are always consistently printed in the
       // same place regardless of the function type.
-      this._innerCommentsState = 0 /* INNER_COMMENT_STATE.DISALLOWED */;
+      this._innerCommentsState = 0; /* INNER_COMMENT_STATE.DISALLOWED */
     }
     this.token("*");
   }
@@ -290,12 +288,8 @@ function _getFuncIdName(
   > | null,
 ) {
   let id:
-    | t.Expression
+    t.Expression | t.PrivateName | t.LVal | t.VoidPattern | undefined | null =
-    | t.PrivateName
+    idNode;
-    | t.LVal
-    | t.VoidPattern
-    | undefined
-    | null = idNode;
 
   if (!id && parent) {
     const parentType = parent.type;

packages/babel-helper-compilation-targets/src/utils.ts

@@ -52,8 +52,7 @@ export function isUnreleasedVersion(
 
 export function getLowestUnreleased(a: string, b: string, env: Target): string {
   const unreleasedLabel:
-    | (typeof unreleasedLabels)[keyof typeof unreleasedLabels]
+    (typeof unreleasedLabels)[keyof typeof unreleasedLabels] | undefined =
-    | undefined =
     // @ts-expect-error unreleasedLabel is undefined when env is not safari
     unreleasedLabels[env];
   if (a === unreleasedLabel) {

packages/babel-helper-create-class-features-plugin/src/decorators.ts

@@ -34,9 +34,7 @@ type ClassElement =
   | t.StaticBlock;
 
 type ClassElementCanHaveComputedKeys =
-  | t.ClassMethod
+  t.ClassMethod | t.ClassProperty | t.ClassAccessorProperty;
-  | t.ClassProperty
-  | t.ClassAccessorProperty;
 
 export type DecoratorVersionKind = "2023-11";
 
@@ -615,8 +613,7 @@ interface DecoratorInfo {
   name: t.StringLiteral | t.Expression;
 
   privateMethods:
-    | (t.FunctionExpression | t.ArrowFunctionExpression)[]
+    (t.FunctionExpression | t.ArrowFunctionExpression)[] | undefined;
-    | undefined;
 
   // The names of local variables that will be used/returned from the decoration
   locals: t.Identifier | t.Identifier[] | undefined;
@@ -1365,8 +1362,7 @@ function transformClass(
       let locals: t.Identifier[];
       if (hasDecorators) {
         let privateMethods: (
-          | t.FunctionExpression
+          t.FunctionExpression | t.ArrowFunctionExpression
-          | t.ArrowFunctionExpression
         )[];
 
         let nameExpr: t.Expression;
@@ -1654,9 +1650,7 @@ function transformClass(
   if (classDecorators) {
     classLocals.push(classIdLocal, classInitLocal!);
     const statics: (
-      | t.ClassProperty
+      t.ClassProperty | t.ClassPrivateProperty | t.ClassPrivateMethod
-      | t.ClassPrivateProperty
-      | t.ClassPrivateMethod
     )[] = [];
     path.get("body.body").forEach(element => {
       if (
@@ -1862,8 +1856,7 @@ function transformClass(
   if (computedKeyAssignments.length > 0) {
     const elements = originalClassPath.get("body.body");
     let firstPublicElement:
-      | NodePath<t.ClassProperty | t.ClassMethod>
+      NodePath<t.ClassProperty | t.ClassMethod> | undefined;
-      | undefined;
     for (const path of elements) {
       if (
         (path.isClassProperty() || path.isClassMethod()) &&

packages/babel-helper-module-transforms/src/rewrite-live-references.ts

@@ -36,8 +36,7 @@ function isInType(path: NodePath) {
         return (
           (
             path.parentPath.parent as
-              | t.ExportDefaultDeclaration
+              t.ExportDefaultDeclaration | t.ExportNamedDeclaration
-              | t.ExportNamedDeclaration
           ).exportKind === "type"
         );
       default:

packages/babel-helpers/src/helpers/regenerator.ts

@@ -361,9 +361,7 @@ export default function /* @no-mangle */ _regenerator() {
                   _arg > finallyLoc)
               ) {
                 entry[4] = _type as
-                  | OperatorType.Return
+                  OperatorType.Return | OperatorType.Jump | OperatorType.Throw;
-                  | OperatorType.Jump
-                  | OperatorType.Throw;
                 entry[5] = _arg;
                 ctx.n = finallyLoc;
                 method = OperatorType.Next;

packages/babel-parser/src/parse-error.ts

@@ -9,8 +9,7 @@ type SyntaxPlugin =
   | "placeholders";
 
 type ParseErrorCode =
-  | "BABEL_PARSER_SYNTAX_ERROR"
+  "BABEL_PARSER_SYNTAX_ERROR" | "BABEL_PARSER_SOURCETYPE_MODULE_REQUIRED";
-  | "BABEL_PARSER_SOURCETYPE_MODULE_REQUIRED";
 
 // Babel uses "normal" SyntaxErrors for it's errors, but adds some extra
 // functionality. This functionality is defined in the

packages/babel-parser/src/parser/expression.ts

@@ -118,10 +118,7 @@ export default abstract class ExpressionParser extends LValParser {
     }
 
     const key = prop.key as
-      | N.Identifier
+      N.Identifier | N.StringLiteral | N.NumericLiteral | N.BigIntLiteral;
-      | N.StringLiteral
-      | N.NumericLiteral
-      | N.BigIntLiteral;
     // It is either an Identifier or a String/NumericLiteral
     const name = key.type === "Identifier" ? key.name : key.value;
 
@@ -917,12 +914,8 @@ export default abstract class ExpressionParser extends LValParser {
       );
     }
     let finishedNode:
-      | N.CallExpression
+      N.CallExpression | N.OptionalCallExpression | N.ArrowFunctionExpression =
-      | N.OptionalCallExpression
+      this.finishCallExpression(node, optionalChainMember);
-      | N.ArrowFunctionExpression = this.finishCallExpression(
-      node,
-      optionalChainMember,
-    );
 
     if (maybeAsyncArrow && this.shouldParseAsyncArrow() && !optional) {
       /*:: invariant(refExpressionErrors != null) */

packages/babel-parser/src/parser/lval.ts

@@ -492,11 +492,7 @@ export default abstract class LValParser extends NodeUtils {
     const allowEmpty = flags & ParseBindingListFlags.ALLOW_EMPTY;
 
     const elts: (
-      | Pattern
+      Pattern | Identifier | RestElement | TSParameterProperty | null
-      | Identifier
-      | RestElement
-      | TSParameterProperty
-      | null
     )[] = [];
     let first = true;
     while (!this.eat(close)) {
@@ -736,11 +732,7 @@ export default abstract class LValParser extends NodeUtils {
 
   checkLVal(
     expression:
-      | Expression
+      Expression | ObjectMember | RestElement | Pattern | TSParameterProperty,
-      | ObjectMember
-      | RestElement
-      | Pattern
-      | TSParameterProperty,
     ancestor: LValAncestor,
     binding: BindingFlag = BindingFlag.TYPE_NONE,
     checkClashes: Set<string> | false = false,

packages/babel-parser/src/parser/statement.ts

@@ -2890,9 +2890,7 @@ export default abstract class StatementParser extends ExpressionParser {
 
   parseImportSpecifierLocal<
     T extends
-      | N.ImportSpecifier
+      N.ImportSpecifier | N.ImportDefaultSpecifier | N.ImportNamespaceSpecifier,
-      | N.ImportDefaultSpecifier
-      | N.ImportNamespaceSpecifier,
   >(
     node: Undone<N.ImportDeclaration>,
     specifier: Undone<T>,
@@ -2904,9 +2902,7 @@ export default abstract class StatementParser extends ExpressionParser {
 
   finishImportSpecifier<
     T extends
-      | N.ImportSpecifier
+      N.ImportSpecifier | N.ImportDefaultSpecifier | N.ImportNamespaceSpecifier,
-      | N.ImportDefaultSpecifier
-      | N.ImportNamespaceSpecifier,
   >(
     specifier: Undone<T>,
     type: T["type"],

packages/babel-parser/src/plugin-utils.ts

@@ -158,10 +158,5 @@ export const mixinPlugins = {
 };
 
 export const mixinPluginNames = Object.keys(mixinPlugins) as readonly (
-  | "estree"
+  "estree" | "jsx" | "flow" | "typescript" | "v8intrinsic" | "placeholders"
-  | "jsx"
-  | "flow"
-  | "typescript"
-  | "v8intrinsic"
-  | "placeholders"
 )[];

packages/babel-parser/src/plugins/flow/index.ts

@@ -595,10 +595,7 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
             !insideModule)
         ) {
           const label = this.state.value as
-            | "const"
+            "const" | "let" | "type" | "interface";
-            | "let"
-            | "type"
-            | "interface";
           throw this.raise(
             FlowErrors.UnsupportedDeclareExportKind,
             this.state.startLoc,
@@ -958,8 +955,7 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
     // Used when parsing type arguments from ES or JSX productions, where the first token
     // has been created without state.inType. Thus we need to re-scan the lt token.
     flowParseTypeParameterInstantiationInExpression():
-      | N.TypeParameterInstantiation
+      N.TypeParameterInstantiation | undefined {
-      | undefined {
       if (this.reScan_lt() !== tt.lt) return;
       return this.flowParseTypeParameterInstantiation();
     }
@@ -3111,10 +3107,8 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
         }, state);
 
         let arrowExpression:
-          | N.ArrowFunctionExpression
+          N.ArrowFunctionExpression | N.TypeCastExpression | undefined | null =
-          | N.TypeCastExpression
+          null;
-          | undefined
-          | null = null;
 
         if (
           arrow.node &&
@@ -3214,8 +3208,7 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
     setArrowFunctionParameters(
       node: Undone<N.ArrowFunctionExpression>,
       params:
-        | (N.Expression | N.SpreadElement)[]
+        (N.Expression | N.SpreadElement)[] | (N.Expression | N.RestElement)[],
-        | (N.Expression | N.RestElement)[],
     ): void {
       if (
         this.state.noArrowParamsConversionAt.includes(

packages/babel-parser/src/plugins/jsx/index.ts

@@ -302,9 +302,7 @@ export default (superClass: typeof Parser) =>
     // or single identifier.
 
     jsxParseElementName():
-      | N.JSXIdentifier
+      N.JSXIdentifier | N.JSXNamespacedName | N.JSXMemberExpression {
-      | N.JSXNamespacedName
-      | N.JSXMemberExpression {
       const startLoc = this.state.startLoc;
       let node: N.JSXIdentifier | N.JSXNamespacedName | N.JSXMemberExpression =
         this.jsxParseNamespacedName();
@@ -323,9 +321,7 @@ export default (superClass: typeof Parser) =>
     // Parses any type of JSX attribute value.
 
     jsxParseAttributeValue():
-      | N.JSXExpressionContainer
+      N.JSXExpressionContainer | N.JSXElement | N.StringLiteral {
-      | N.JSXElement
-      | N.StringLiteral {
       let node;
       switch (this.state.type) {
         case tt.braceL:

packages/babel-parser/src/plugins/typescript/index.ts

@@ -934,12 +934,10 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
     tsTryParseIndexSignature(
       node: Undone<N.TSIndexSignature>,
     ): N.TSIndexSignature | undefined {
-      if (
+      if (!(
-        !(
         this.match(tt.bracketL) &&
         this.tsLookAhead(this.tsIsUnambiguouslyIndexSignature.bind(this))
-        )
+      )) {
-      ) {
         return;
       }
 
@@ -2400,8 +2398,7 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
     // Used when parsing type arguments from ES or JSX productions, where the first token
     // has been created without state.inType. Thus we need to re-scan the lt token.
     tsParseTypeArgumentsInExpression():
-      | N.TSTypeParameterInstantiation
+      N.TSTypeParameterInstantiation | undefined {
-      | undefined {
       if (this.reScan_lt() !== tt.lt) return;
       return this.tsParseTypeArguments();
     }
@@ -4258,10 +4255,7 @@ export default (superClass: ClassWithMixin<typeof Parser, IJSXParserMixin>) =>
 
     toAssignableListItem(
       exprList: (
-        | N.Expression
+        N.Expression | N.SpreadElement | N.RestElement | N.TSTypeCastExpression
-        | N.SpreadElement
-        | N.RestElement
-        | N.TSTypeCastExpression
       )[],
       index: number,
       isLHS: boolean,

packages/babel-parser/src/tokenizer/state.ts

@@ -7,8 +7,7 @@ import { tt, type TokenType } from "./types.ts";
 import type { Errors, ParseError } from "../parse-error.ts";
 
 export type DeferredStrictError =
-  | typeof Errors.StrictNumericEscape
+  typeof Errors.StrictNumericEscape | typeof Errors.StrictOctalLiteral;
-  | typeof Errors.StrictOctalLiteral;
 
 export const enum LoopLabelKind {
   Loop = 1,

packages/babel-parser/src/types.ts

@@ -186,9 +186,7 @@ export type ESTreeClassElement =
 export type ESTreeLiteral = EstreeLiteral | EstreeBigIntLiteral;
 
 export type ESTreeExpression =
-  | EstreeChainExpression
+  EstreeChainExpression | ESTreeLiteral | EstreeTSEmptyBodyFunctionExpression;
-  | ESTreeLiteral
-  | EstreeTSEmptyBodyFunctionExpression;
 
 export type Node = N.Node | ESTreeNode | TSTypeCastExpression;
 
@@ -198,9 +196,7 @@ export type NormalFunction = N.FunctionDeclaration | N.FunctionExpression;
 export type Assignable = N.AssignmentExpression["left"];
 
 export type ObjectOrClassMember =
-  | N.ClassMethod
+  N.ClassMethod | N.ClassProperty | N.ObjectMember;
-  | N.ClassProperty
-  | N.ObjectMember;
 
 export type ObjectMember = N.ObjectProperty | N.ObjectMethod;
 
@@ -212,10 +208,7 @@ export type ClassMember =
   | N.ClassAccessorProperty;
 
 export type MethodLike =
-  | N.ObjectMethod
+  N.ObjectMethod | N.ClassMethod | N.ClassPrivateMethod | N.TSDeclareMethod;
-  | N.ClassMethod
-  | N.ClassPrivateMethod
-  | N.TSDeclareMethod;
 
 export type AnyImport = N.ImportDeclaration | N.TSImportEqualsDeclaration;
 export type AnyExport =

packages/babel-parser/src/util/expression-scope.ts

@@ -73,8 +73,7 @@ class ExpressionScope {
 }
 
 type ArrowHeadParsingParameterInitializerError =
-  | typeof Errors.AwaitExpressionFormalParameter
+  typeof Errors.AwaitExpressionFormalParameter | typeof Errors.YieldInParameter;
-  | typeof Errors.YieldInParameter;
 type ArrowHeadParsingDeclarationError =
   | ArrowHeadParsingParameterInitializerError
   | typeof Errors.InvalidParenthesizedAssignment

packages/babel-plugin-proposal-destructuring-private/src/util.ts

@@ -271,11 +271,7 @@ export function* traversePattern(
 
 export function hasPrivateKeys(
   pattern:
-    | t.LVal
+    t.LVal | t.PatternLike | t.OptionalMemberExpression | null | undefined,
-    | t.PatternLike
-    | t.OptionalMemberExpression
-    | null
-    | undefined,
 ) {
   let result = false;
   traversePattern(pattern, function* (node) {

packages/babel-plugin-proposal-discard-binding/src/utils.ts

@@ -147,9 +147,7 @@ export function removeTrailingVoidPatternsFromParams(
 export function isAnonymousFunctionDefinition(
   node: t.Node | null,
 ): node is
-  | t.ClassExpression
+  t.ClassExpression | t.ArrowFunctionExpression | t.FunctionExpression {
-  | t.ArrowFunctionExpression
-  | t.FunctionExpression {
   return (
     t.isArrowFunctionExpression(node) ||
     ((t.isFunctionExpression(node) || t.isClassExpression(node)) && !node.id)

packages/babel-plugin-transform-class-static-block/src/index.ts

@@ -144,9 +144,8 @@ export default declare(({ types: t, template, traverse, assertVersion }) => {
 
         const pendingStaticBlocks: t.StaticBlock[] = [];
         let lastStaticProp:
-          | null
+          null | NodePath<t.ClassProperty> | NodePath<t.ClassPrivateProperty> =
-          | NodePath<t.ClassProperty>
+          null;
-          | NodePath<t.ClassPrivateProperty> = null;
 
         for (const path of classBody.get("body")) {
           if (path.isStaticBlock()) {

packages/babel-plugin-transform-classes/src/transformClass.ts

@@ -284,8 +284,7 @@ export default function transformClass(
       ];
       if (bareSuperNode.arguments?.length) {
         const bareSuperNodeArguments = bareSuperNode.arguments as (
-          | t.Expression
+          t.Expression | t.SpreadElement
-          | t.SpreadElement
         )[];
 
         /**

packages/babel-plugin-transform-destructuring/src/util.ts

@@ -79,9 +79,7 @@ const arrayUnpackVisitor = (
 };
 
 export type DestructuringTransformerNode =
-  | t.VariableDeclaration
+  t.VariableDeclaration | t.ExpressionStatement | t.ReturnStatement;
-  | t.ExpressionStatement
-  | t.ReturnStatement;
 
 // using/await using declaration must not contain pattern as its id.
 export type VariableDeclarationKindAllowsPattern = Exclude<

packages/babel-plugin-transform-explicit-resource-management/src/index.ts

@@ -12,9 +12,7 @@ const enum USING_KIND {
 function isAnonymousFunctionDefinition(
   node: t.Node,
 ): node is
-  | t.ClassExpression
+  t.ClassExpression | t.ArrowFunctionExpression | t.FunctionExpression {
-  | t.ArrowFunctionExpression
-  | t.FunctionExpression {
   return (
     t.isArrowFunctionExpression(node) ||
     ((t.isFunctionExpression(node) || t.isClassExpression(node)) && !node.id)

packages/babel-plugin-transform-optional-chaining/src/transform.ts

@@ -121,8 +121,7 @@ export function transformOptionalChain(
 
   for (let i = optionals.length - 1; i >= 0; i--) {
     const node = optionals[i] as unknown as
-      | t.MemberExpression
+      t.MemberExpression | t.CallExpression;
-      | t.CallExpression;
 
     const isCall = t.isCallExpression(node);
 

packages/babel-plugin-transform-parameters/src/rest.ts

@@ -136,7 +136,6 @@ const memberExpressionOptimisationVisitor: Visitor<State> = {
           !state.deopted &&
           !(
             // ex: `args[0] = "whatever"`
-            (
             (grandparentPath.isAssignmentExpression() &&
               parentPath.node === grandparentPath.node.left) || // ex: `[args[0]] = ["whatever"]`
             grandparentPath.isLVal() || // ex: `for (rest[0] in this)`
@@ -150,7 +149,6 @@ const memberExpressionOptimisationVisitor: Visitor<State> = {
             ((grandparentPath.isCallExpression() ||
               grandparentPath.isNewExpression()) &&
               parentPath.node === grandparentPath.node.callee)
-            )
           );
         if (argsOptEligible) {
           if (parentPath.node.computed) {

packages/babel-plugin-transform-private-property-in-object/src/index.ts

@@ -135,8 +135,7 @@ export default declare((api, opt: Options) => {
         const { name } = node.left.id;
 
         let privateElement:
-          | NodePath<t.ClassPrivateMethod | t.ClassPrivateProperty>
+          NodePath<t.ClassPrivateMethod | t.ClassPrivateProperty> | undefined;
-          | undefined;
         const outerClass = path.findParent(path => {
           if (!path.isClass()) return false;
 

packages/babel-plugin-transform-regenerator/src/regenerator/emit.ts

@@ -1307,8 +1307,7 @@ export class Emitter {
           t.updateExpression(
             path.node.operator,
             self.explodeExpression(path.get("argument")) as
-              | t.Identifier
+              t.Identifier | t.MemberExpression,
-              | t.MemberExpression,
             path.node.prefix,
           ),
         );

packages/babel-traverse/src/path/conversion.ts

@@ -474,8 +474,7 @@ function standardizeSuperProperty(
     const assignmentPath = superProp.parentPath;
 
     const op = assignmentPath.node.operator.slice(0, -1) as
-      | LogicalOp
+      LogicalOp | BinaryOp;
-      | BinaryOp;
 
     const value = assignmentPath.node.right;
 

packages/babel-traverse/src/path/index.ts

@@ -377,11 +377,7 @@ interface NodePathOverwrites {
     this: NodePath_Final,
   ): asserts this is NodePath_Final<
     (
-      | t.Loop
+      t.Loop | t.WithStatement | t.Function | t.LabeledStatement | t.CatchClause
-      | t.WithStatement
-      | t.Function
-      | t.LabeledStatement
-      | t.CatchClause
     ) & { body: t.BlockStatement }
   >;
   /**

packages/babel-traverse/src/path/lib/virtual-types.ts

@@ -3,9 +3,7 @@ import type * as t from "@babel/types";
 export interface VirtualTypeAliases {
   BindingIdentifier: t.Identifier;
   BlockScoped:
-    | t.FunctionDeclaration
+    t.FunctionDeclaration | t.ClassDeclaration | t.VariableDeclaration;
-    | t.ClassDeclaration
-    | t.VariableDeclaration;
   ExistentialTypeParam: t.ExistsTypeAnnotation;
   Expression: t.Expression;
   Flow: t.Flow | t.ImportDeclaration | t.ExportDeclaration | t.ImportSpecifier;

packages/babel-traverse/src/scope/index.ts

@@ -1244,8 +1244,7 @@ class Scope {
   hasBinding(
     name: string,
     opts?:
-      | boolean
+      boolean | { noGlobals?: boolean; noUids?: boolean; upToScope?: Scope },
-      | { noGlobals?: boolean; noUids?: boolean; upToScope?: Scope },
   ) {
     if (!name) return false;
     // TODO: Only accept the object form.

packages/babel-traverse/src/types.ts

@@ -64,8 +64,7 @@ export interface VisitorBase<S>
 export type Visitor<S = unknown> = VisitorBase<S> | ExplodedVisitor<S>;
 
 export type VisitNode<S, P extends t.Node> =
-  | VisitNodeFunction<S, P>
+  VisitNodeFunction<S, P> | VisitNodeObject<S, P>;
-  | VisitNodeObject<S, P>;
 
 export type VisitNodeFunction<S, P extends t.Node> = (
   this: S,

packages/babel-types/src/ast-types/generated/index.ts

@@ -405,9 +405,7 @@ export interface CallExpression extends BaseNode {
   callee: Expression | Super | Import | V8IntrinsicIdentifier;
   arguments: (Expression | SpreadElement | ArgumentPlaceholder)[];
   typeArguments?:
-    | TypeParameterInstantiation
+    TypeParameterInstantiation | TSTypeParameterInstantiation | null;
-    | TSTypeParameterInstantiation
-    | null;
 }
 
 export interface CatchClause extends BaseNode {
@@ -586,17 +584,14 @@ export interface MemberExpressionNonComputed extends BaseNode {
   property: Identifier | PrivateName;
 }
 export type MemberExpression =
-  | MemberExpressionComputed
+  MemberExpressionComputed | MemberExpressionNonComputed;
-  | MemberExpressionNonComputed;
 
 export interface NewExpression extends BaseNode {
   type: "NewExpression";
   callee: Expression;
   arguments: (Expression | SpreadElement | ArgumentPlaceholder)[];
   typeArguments?:
-    | TypeParameterInstantiation
+    TypeParameterInstantiation | TSTypeParameterInstantiation | null;
-    | TSTypeParameterInstantiation
-    | null;
 }
 
 export interface Program extends BaseNode {
@@ -655,11 +650,7 @@ export interface ObjectPropertyNonComputed extends BaseNode {
   decorators?: Decorator[] | null;
   computed: false;
   key:
-    | Identifier
+    Identifier | StringLiteral | NumericLiteral | BigIntLiteral | PrivateName;
-    | StringLiteral
-    | NumericLiteral
-    | BigIntLiteral
-    | PrivateName;
 }
 export type ObjectProperty = ObjectPropertyComputed | ObjectPropertyNonComputed;
 
@@ -841,9 +832,7 @@ export interface ClassExpression extends BaseNode {
   implements?: (TSClassImplements | ClassImplements)[] | null;
   mixins?: InterfaceExtends | null;
   superTypeArguments?:
-    | TypeParameterInstantiation
+    TypeParameterInstantiation | TSTypeParameterInstantiation | null;
-    | TSTypeParameterInstantiation
-    | null;
   typeParameters?: TypeParameterDeclaration | TSTypeParameterDeclaration | null;
 }
 
@@ -858,9 +847,7 @@ export interface ClassDeclaration extends BaseNode {
   implements?: (TSClassImplements | ClassImplements)[] | null;
   mixins?: InterfaceExtends | null;
   superTypeArguments?:
-    | TypeParameterInstantiation
+    TypeParameterInstantiation | TSTypeParameterInstantiation | null;
-    | TSTypeParameterInstantiation
-    | null;
   typeParameters?: TypeParameterDeclaration | TSTypeParameterDeclaration | null;
 }
 
@@ -901,9 +888,7 @@ export interface ExportNamedDeclaration extends BaseNode {
     | TypeAlias
     | null;
   specifiers: (
-    | ExportSpecifier
+    ExportSpecifier | ExportDefaultSpecifier | ExportNamespaceSpecifier
-    | ExportDefaultSpecifier
-    | ExportNamespaceSpecifier
   )[];
   source?: StringLiteral | null;
   attributes?: ImportAttribute[] | null;
@@ -937,9 +922,7 @@ export interface ForOfStatement extends BaseNode {
 export interface ImportDeclaration extends BaseNode {
   type: "ImportDeclaration";
   specifiers: (
-    | ImportSpecifier
+    ImportSpecifier | ImportDefaultSpecifier | ImportNamespaceSpecifier
-    | ImportDefaultSpecifier
-    | ImportNamespaceSpecifier
   )[];
   source: StringLiteral;
   attributes?: ImportAttribute[] | null;
@@ -1041,9 +1024,7 @@ export interface TaggedTemplateExpression extends BaseNode {
   tag: Expression;
   quasi: TemplateLiteral;
   typeArguments?:
-    | TypeParameterInstantiation
+    TypeParameterInstantiation | TSTypeParameterInstantiation | null;
-    | TSTypeParameterInstantiation
-    | null;
 }
 
 export interface TemplateElement extends BaseNode {
@@ -1105,8 +1086,7 @@ export interface OptionalMemberExpressionNonComputed extends BaseNode {
   property: Identifier | PrivateName;
 }
 export type OptionalMemberExpression =
-  | OptionalMemberExpressionComputed
+  OptionalMemberExpressionComputed | OptionalMemberExpressionNonComputed;
-  | OptionalMemberExpressionNonComputed;
 
 export interface OptionalCallExpression extends BaseNode {
   type: "OptionalCallExpression";
@@ -1114,9 +1094,7 @@ export interface OptionalCallExpression extends BaseNode {
   arguments: (Expression | SpreadElement | ArgumentPlaceholder)[];
   optional: boolean;
   typeArguments?:
-    | TypeParameterInstantiation
+    TypeParameterInstantiation | TSTypeParameterInstantiation | null;
-    | TSTypeParameterInstantiation
-    | null;
 }
 
 export interface ClassPropertyComputed extends BaseNode {
@@ -1606,11 +1584,7 @@ export interface JSXAttribute extends BaseNode {
   type: "JSXAttribute";
   name: JSXIdentifier | JSXNamespacedName;
   value?:
-    | JSXElement
+    JSXElement | JSXFragment | StringLiteral | JSXExpressionContainer | null;
-    | JSXFragment
-    | StringLiteral
-    | JSXExpressionContainer
-    | null;
 }
 
 export interface JSXClosingElement extends BaseNode {
@@ -1623,11 +1597,7 @@ export interface JSXElement extends BaseNode {
   openingElement: JSXOpeningElement;
   closingElement?: JSXClosingElement | null;
   children: (
-    | JSXText
+    JSXText | JSXExpressionContainer | JSXSpreadChild | JSXElement | JSXFragment
-    | JSXExpressionContainer
-    | JSXSpreadChild
-    | JSXElement
-    | JSXFragment
   )[];
 }
 
@@ -1668,9 +1638,7 @@ export interface JSXOpeningElement extends BaseNode {
   attributes: (JSXAttribute | JSXSpreadAttribute)[];
   selfClosing: boolean;
   typeArguments?:
-    | TypeParameterInstantiation
+    TypeParameterInstantiation | TSTypeParameterInstantiation | null;
-    | TSTypeParameterInstantiation
-    | null;
 }
 
 export interface JSXSpreadAttribute extends BaseNode {
@@ -1688,11 +1656,7 @@ export interface JSXFragment extends BaseNode {
   openingFragment: JSXOpeningFragment;
   closingFragment: JSXClosingFragment;
   children: (
-    | JSXText
+    JSXText | JSXExpressionContainer | JSXSpreadChild | JSXElement | JSXFragment
-    | JSXExpressionContainer
-    | JSXSpreadChild
-    | JSXElement
-    | JSXFragment
   )[];
 }
 
@@ -1769,15 +1733,10 @@ export interface ClassAccessorPropertyNonComputed extends BaseNode {
   variance?: Variance | null;
   computed: false;
   key:
-    | Identifier
+    Identifier | StringLiteral | NumericLiteral | BigIntLiteral | PrivateName;
-    | StringLiteral
-    | NumericLiteral
-    | BigIntLiteral
-    | PrivateName;
 }
 export type ClassAccessorProperty =
-  | ClassAccessorPropertyComputed
+  ClassAccessorPropertyComputed | ClassAccessorPropertyNonComputed;
-  | ClassAccessorPropertyNonComputed;
 
 export interface Decorator extends BaseNode {
   type: "Decorator";
@@ -1863,8 +1822,7 @@ export interface TSDeclareMethodNonComputed extends BaseNode {
   key: Identifier | StringLiteral | NumericLiteral | BigIntLiteral;
 }
 export type TSDeclareMethod =
-  | TSDeclareMethodComputed
+  TSDeclareMethodComputed | TSDeclareMethodNonComputed;
-  | TSDeclareMethodNonComputed;
 
 export interface TSQualifiedName extends BaseNode {
   type: "TSQualifiedName";
@@ -2484,10 +2442,7 @@ export type Terminatorless =
   | YieldExpression
   | AwaitExpression;
 export type CompletionStatement =
-  | BreakStatement
+  BreakStatement | ContinueStatement | ReturnStatement | ThrowStatement;
-  | ContinueStatement
-  | ReturnStatement
-  | ThrowStatement;
 export type Conditional = ConditionalExpression | IfStatement;
 export type Loop =
   | DoWhileStatement
@@ -2497,9 +2452,7 @@ export type Loop =
   | ForOfStatement;
 export type While = DoWhileStatement | WhileStatement;
 export type ExpressionWrapper =
-  | ExpressionStatement
+  ExpressionStatement | ParenthesizedExpression | TypeCastExpression;
-  | ParenthesizedExpression
-  | TypeCastExpression;
 export type For = ForInStatement | ForStatement | ForOfStatement;
 export type ForXStatement = ForInStatement | ForOfStatement;
 export type Function =
@@ -2620,16 +2573,10 @@ export type UserWhitespacable =
 export type Method = ObjectMethod | ClassMethod | ClassPrivateMethod;
 export type ObjectMember = ObjectMethod | ObjectProperty;
 export type Property =
-  | ObjectProperty
+  ObjectProperty | ClassProperty | ClassPrivateProperty | ClassAccessorProperty;
-  | ClassProperty
-  | ClassPrivateProperty
-  | ClassAccessorProperty;
 export type UnaryLike = UnaryExpression | SpreadElement;
 export type Pattern =
-  | AssignmentPattern
+  AssignmentPattern | ArrayPattern | ObjectPattern | VoidPattern;
-  | ArrayPattern
-  | ObjectPattern
-  | VoidPattern;
 export type Class = ClassExpression | ClassDeclaration;
 export type ImportOrExportDeclaration =
   | ExportAllDeclaration
@@ -2637,9 +2584,7 @@ export type ImportOrExportDeclaration =
   | ExportNamedDeclaration
   | ImportDeclaration;
 export type ExportDeclaration =
-  | ExportAllDeclaration
+  ExportAllDeclaration | ExportDefaultDeclaration | ExportNamedDeclaration;
-  | ExportDefaultDeclaration
-  | ExportNamedDeclaration;
 export type ModuleSpecifier =
   | ExportSpecifier
   | ImportDefaultSpecifier
@@ -2770,15 +2715,9 @@ export type FlowDeclaration =
   | TypeAlias;
 export type FlowPredicate = DeclaredPredicate | InferredPredicate;
 export type EnumBody =
-  | EnumBooleanBody
+  EnumBooleanBody | EnumNumberBody | EnumStringBody | EnumSymbolBody;
-  | EnumNumberBody
-  | EnumStringBody
-  | EnumSymbolBody;
 export type EnumMember =
-  | EnumBooleanMember
+  EnumBooleanMember | EnumNumberMember | EnumStringMember | EnumDefaultedMember;
-  | EnumNumberMember
-  | EnumStringMember
-  | EnumDefaultedMember;
 export type JSX =
   | JSXAttribute
   | JSXClosingElement
@@ -2988,10 +2927,7 @@ export interface Aliases {
 }
 
 export type DeprecatedAliases =
-  | NumberLiteral
+  NumberLiteral | RegexLiteral | RestProperty | SpreadProperty;
-  | RegexLiteral
-  | RestProperty
-  | SpreadProperty;
 
 export interface ParentMaps {
   AnyTypeAnnotation:
@@ -4252,9 +4188,7 @@ export interface ParentMaps {
     | WhileStatement
     | WithStatement;
   EnumDefaultedMember:
-    | DeclareExportDeclaration
+    DeclareExportDeclaration | EnumStringBody | EnumSymbolBody;
-    | EnumStringBody
-    | EnumSymbolBody;
   EnumNumberBody: DeclareExportDeclaration | EnumDeclaration;
   EnumNumberMember: DeclareExportDeclaration | EnumNumberBody;
   EnumStringBody: DeclareExportDeclaration | EnumDeclaration;
@@ -4989,9 +4923,7 @@ export interface ParentMaps {
     | JSXNamespacedName
     | JSXOpeningElement;
   JSXMemberExpression:
-    | JSXClosingElement
+    JSXClosingElement | JSXMemberExpression | JSXOpeningElement;
-    | JSXMemberExpression
-    | JSXOpeningElement;
   JSXNamespacedName: JSXAttribute | JSXClosingElement | JSXOpeningElement;
   JSXOpeningElement: JSXElement;
   JSXOpeningFragment: JSXFragment;

packages/babel-types/src/builders/generated/lowercase.ts

@@ -258,11 +258,7 @@ export function callExpression(
 }
 export function catchClause(
   param:
-    | t.Identifier
+    t.Identifier | t.ArrayPattern | t.ObjectPattern | null | undefined = null,
-    | t.ArrayPattern
-    | t.ObjectPattern
-    | null
-    | undefined = null,
   body: t.BlockStatement,
 ): t.CatchClause {
   const node: t.CatchClause = {
@@ -1107,9 +1103,7 @@ export function exportNamedDeclaration(
     | t.TypeAlias
     | null = null,
   specifiers: (
-    | t.ExportSpecifier
+    t.ExportSpecifier | t.ExportDefaultSpecifier | t.ExportNamespaceSpecifier
-    | t.ExportDefaultSpecifier
-    | t.ExportNamespaceSpecifier
   )[] = [],
   source: t.StringLiteral | null = null,
   attributes: t.ImportAttribute[] | null = null,
@@ -1173,9 +1167,7 @@ export function forOfStatement(
 }
 export function importDeclaration(
   specifiers: (
-    | t.ImportSpecifier
+    t.ImportSpecifier | t.ImportDefaultSpecifier | t.ImportNamespaceSpecifier
-    | t.ImportDefaultSpecifier
-    | t.ImportNamespaceSpecifier
   )[],
   source: t.StringLiteral,
   attributes: t.ImportAttribute[] | null = null,
@@ -2321,10 +2313,7 @@ export function voidTypeAnnotation(): t.VoidTypeAnnotation {
 export function enumDeclaration(
   id: t.Identifier,
   body:
-    | t.EnumBooleanBody
+    t.EnumBooleanBody | t.EnumNumberBody | t.EnumStringBody | t.EnumSymbolBody,
-    | t.EnumNumberBody
-    | t.EnumStringBody
-    | t.EnumSymbolBody,
 ): t.EnumDeclaration {
   const node: t.EnumDeclaration = {
     type: "EnumDeclaration",

packages/babel-types/src/builders/react/buildChildren.ts

@@ -7,10 +7,7 @@ import cleanJSXElementLiteralChild from "../../utils/react/cleanJSXElementLitera
 import type * as t from "../../index.ts";
 
 type ReturnedChild =
-  | t.JSXSpreadChild
+  t.JSXSpreadChild | t.JSXElement | t.JSXFragment | t.Expression;
-  | t.JSXElement
-  | t.JSXFragment
-  | t.Expression;
 
 export default function buildChildren(
   node: t.JSXElement | t.JSXFragment,

yarn.lock

@@ -7662,7 +7662,7 @@ __metadata:
     open: "npm:^11.0.0"
     p-limit: "npm:^7.2.0"
     pkg-pr-new: "npm:^0.0.54"
-    prettier: "npm:^3.8.1"
+    prettier: "npm:^3.9.5"
     publint: "npm:^0.3.17"
     rollup: "npm:^4.18.0"
     rollup-plugin-dts: "patch:rollup-plugin-dts@npm%3A6.1.0#~/.yarn/patches/rollup-plugin-dts-npm-6.1.0-6d41e665a7.patch"
@@ -14684,12 +14684,12 @@ __metadata:
   languageName: node
   linkType: hard
 
-"prettier@npm:^3.8.1":
+"prettier@npm:^3.9.5":
-  version: 3.8.3
+  version: 3.9.5
-  resolution: "prettier@npm:3.8.3"
+  resolution: "prettier@npm:3.9.5"
   bin:
     prettier: bin/prettier.cjs
-  checksum: 10/4b3b12cbb29e4c96bed936e5d070167552500c18d37676fb3e0caae6199c42860662608e4dc116230698f6e2bb0267ef2548158224c92d40f188d309d72fdd6f
+  checksum: 10/b6587f1582ba653ce5207ee227aff646500e5098646931088f176d1ab090b1f47d5a333f1facd634e9aa7dcb15c45940e2cec13a5962534cf0200617517b67b6
   languageName: node
   linkType: hard