Fixed declaration emit of object literals withs divergent accessors

src/compiler/checker.ts

@@ -7244,6 +7244,30 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             const propertyName = getPropertyNameNodeForSymbol(propertySymbol, context);
             context.enclosingDeclaration = saveEnclosingDeclaration;
             context.approximateLength += symbolName(propertySymbol).length + 1;
+
+            if (propertySymbol.flags & SymbolFlags.Accessor) {
+                const writeType = getWriteTypeOfSymbol(propertySymbol);
+                if (propertyType !== writeType) {
+                    const getterDeclaration = getDeclarationOfKind<GetAccessorDeclaration>(propertySymbol, SyntaxKind.GetAccessor)!;
+                    const getterSignature = getSignatureFromDeclaration(getterDeclaration);
+                    typeElements.push(
+                        setCommentRange(
+                            signatureToSignatureDeclarationHelper(getterSignature, SyntaxKind.GetAccessor, context, { name: propertyName }) as GetAccessorDeclaration,
+                            getterDeclaration,
+                        ),
+                    );
+                    const setterDeclaration = getDeclarationOfKind<SetAccessorDeclaration>(propertySymbol, SyntaxKind.SetAccessor)!;
+                    const setterSignature = getSignatureFromDeclaration(setterDeclaration);
+                    typeElements.push(
+                        setCommentRange(
+                            signatureToSignatureDeclarationHelper(setterSignature, SyntaxKind.SetAccessor, context, { name: propertyName }) as SetAccessorDeclaration,
+                            setterDeclaration,
+                        ),
+                    );
+                    return;
+                }
+            }
+
             const optionalToken = propertySymbol.flags & SymbolFlags.Optional ? factory.createToken(SyntaxKind.QuestionToken) : undefined;
             if (propertySymbol.flags & (SymbolFlags.Function | SymbolFlags.Method) && !getPropertiesOfObjectType(propertyType).length && !isReadonlySymbol(propertySymbol)) {
                 const signatures = getSignaturesOfType(filterType(propertyType, t => !(t.flags & TypeFlags.Undefined)), SignatureKind.Call);
@@ -7284,9 +7308,9 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
             typeElements.push(preserveCommentsOn(propertySignature));
 
             function preserveCommentsOn<T extends Node>(node: T) {
-                if (some(propertySymbol.declarations, d => d.kind === SyntaxKind.JSDocPropertyTag)) {
-                    const d = propertySymbol.declarations?.find(d => d.kind === SyntaxKind.JSDocPropertyTag)! as JSDocPropertyTag;
-                    const commentText = getTextOfJSDocComment(d.comment);
+                const jsdocPropertyTag = propertySymbol.declarations?.find((d): d is JSDocPropertyTag => d.kind === SyntaxKind.JSDocPropertyTag);
+                if (jsdocPropertyTag) {
+                    const commentText = getTextOfJSDocComment(jsdocPropertyTag.comment);
                     if (commentText) {
                         setSyntheticLeadingComments(node, [{ kind: SyntaxKind.MultiLineCommentTrivia, text: "*\n * " + commentText.replace(/\n/g, "\n * ") + "\n ", pos: -1, end: -1, hasTrailingNewLine: true }]);
                     }
@@ -9743,7 +9767,15 @@ export function createTypeChecker(host: TypeCheckerHost): TypeChecker {
                     !(typeToSerialize.symbol && some(typeToSerialize.symbol.declarations, d => getSourceFileOfNode(d) !== ctxSrc)) &&
                     !some(getPropertiesOfType(typeToSerialize), p => isLateBoundName(p.escapedName)) &&
                     !some(getPropertiesOfType(typeToSerialize), p => some(p.declarations, d => getSourceFileOfNode(d) !== ctxSrc)) &&
-                    every(getPropertiesOfType(typeToSerialize), p => isIdentifierText(symbolName(p), languageVersion));
+                    every(getPropertiesOfType(typeToSerialize), p => {
+                        if (!isIdentifierText(symbolName(p), languageVersion)) {
+                            return false;
+                        }
+                        if (!(p.flags & SymbolFlags.Accessor)) {
+                            return true;
+                        }
+                        return getNonMissingTypeOfSymbol(p) === getWriteTypeOfSymbol(p);
+                    });
             }
 
             function makeSerializePropertySymbol<T extends Node>(

tests/baselines/reference/declarationEmitObjectLiteralAccessors1.js

@@ -0,0 +1,57 @@
+//// [tests/cases/compiler/declarationEmitObjectLiteralAccessors1.ts] ////
+
+//// [declarationEmitObjectLiteralAccessors1.ts]
+// same type accessors
+export const obj1 = {
+  /** my awesome getter (first in source order) */
+  get x(): string {
+    return "";
+  },
+  /** my awesome setter (second in source order) */
+  set x(a: string) {},
+};
+
+// divergent accessors
+export const obj2 = {
+  /** my awesome getter */
+  get x(): string {
+    return "";
+  },
+  /** my awesome setter */
+  set x(a: number) {},
+};
+
+export const obj3 = {
+  /** my awesome getter */
+  get x(): string {
+    return "";
+  },
+};
+
+export const obj4 = {
+  /** my awesome setter */
+  set x(a: number) {},
+};
+
+
+
+
+//// [declarationEmitObjectLiteralAccessors1.d.ts]
+export declare const obj1: {
+    /** my awesome getter (first in source order) */
+    x: string;
+};
+export declare const obj2: {
+    /** my awesome getter */
+    get x(): string;
+    /** my awesome setter */
+    set x(a: number);
+};
+export declare const obj3: {
+    /** my awesome getter */
+    readonly x: string;
+};
+export declare const obj4: {
+    /** my awesome setter */
+    x: number;
+};

tests/baselines/reference/declarationEmitObjectLiteralAccessors1.symbols

@@ -0,0 +1,58 @@
+//// [tests/cases/compiler/declarationEmitObjectLiteralAccessors1.ts] ////
+
+=== declarationEmitObjectLiteralAccessors1.ts ===
+// same type accessors
+export const obj1 = {
+>obj1 : Symbol(obj1, Decl(declarationEmitObjectLiteralAccessors1.ts, 1, 12))
+
+  /** my awesome getter (first in source order) */
+  get x(): string {
+>x : Symbol(x, Decl(declarationEmitObjectLiteralAccessors1.ts, 1, 21), Decl(declarationEmitObjectLiteralAccessors1.ts, 5, 4))
+
+    return "";
+  },
+  /** my awesome setter (second in source order) */
+  set x(a: string) {},
+>x : Symbol(x, Decl(declarationEmitObjectLiteralAccessors1.ts, 1, 21), Decl(declarationEmitObjectLiteralAccessors1.ts, 5, 4))
+>a : Symbol(a, Decl(declarationEmitObjectLiteralAccessors1.ts, 7, 8))
+
+};
+
+// divergent accessors
+export const obj2 = {
+>obj2 : Symbol(obj2, Decl(declarationEmitObjectLiteralAccessors1.ts, 11, 12))
+
+  /** my awesome getter */
+  get x(): string {
+>x : Symbol(x, Decl(declarationEmitObjectLiteralAccessors1.ts, 11, 21), Decl(declarationEmitObjectLiteralAccessors1.ts, 15, 4))
+
+    return "";
+  },
+  /** my awesome setter */
+  set x(a: number) {},
+>x : Symbol(x, Decl(declarationEmitObjectLiteralAccessors1.ts, 11, 21), Decl(declarationEmitObjectLiteralAccessors1.ts, 15, 4))
+>a : Symbol(a, Decl(declarationEmitObjectLiteralAccessors1.ts, 17, 8))
+
+};
+
+export const obj3 = {
+>obj3 : Symbol(obj3, Decl(declarationEmitObjectLiteralAccessors1.ts, 20, 12))
+
+  /** my awesome getter */
+  get x(): string {
+>x : Symbol(x, Decl(declarationEmitObjectLiteralAccessors1.ts, 20, 21))
+
+    return "";
+  },
+};
+
+export const obj4 = {
+>obj4 : Symbol(obj4, Decl(declarationEmitObjectLiteralAccessors1.ts, 27, 12))
+
+  /** my awesome setter */
+  set x(a: number) {},
+>x : Symbol(x, Decl(declarationEmitObjectLiteralAccessors1.ts, 27, 21))
+>a : Symbol(a, Decl(declarationEmitObjectLiteralAccessors1.ts, 29, 8))
+
+};
+

tests/baselines/reference/declarationEmitObjectLiteralAccessors1.types

@@ -0,0 +1,68 @@
+//// [tests/cases/compiler/declarationEmitObjectLiteralAccessors1.ts] ////
+
+=== declarationEmitObjectLiteralAccessors1.ts ===
+// same type accessors
+export const obj1 = {
+>obj1 : { x: string; }
+>{  /** my awesome getter (first in source order) */  get x(): string {    return "";  },  /** my awesome setter (second in source order) */  set x(a: string) {},} : { x: string; }
+
+  /** my awesome getter (first in source order) */
+  get x(): string {
+>x : string
+
+    return "";
+>"" : ""
+
+  },
+  /** my awesome setter (second in source order) */
+  set x(a: string) {},
+>x : string
+>a : string
+
+};
+
+// divergent accessors
+export const obj2 = {
+>obj2 : { get x(): string; set x(a: number); }
+>{  /** my awesome getter */  get x(): string {    return "";  },  /** my awesome setter */  set x(a: number) {},} : { get x(): string; set x(a: number); }
+
+  /** my awesome getter */
+  get x(): string {
+>x : string
+
+    return "";
+>"" : ""
+
+  },
+  /** my awesome setter */
+  set x(a: number) {},
+>x : string
+>a : number
+
+};
+
+export const obj3 = {
+>obj3 : { readonly x: string; }
+>{  /** my awesome getter */  get x(): string {    return "";  },} : { readonly x: string; }
+
+  /** my awesome getter */
+  get x(): string {
+>x : string
+
+    return "";
+>"" : ""
+
+  },
+};
+
+export const obj4 = {
+>obj4 : { x: number; }
+>{  /** my awesome setter */  set x(a: number) {},} : { x: number; }
+
+  /** my awesome setter */
+  set x(a: number) {},
+>x : number
+>a : number
+
+};
+

tests/baselines/reference/declarationEmitObjectLiteralAccessorsJs1.js

@@ -0,0 +1,80 @@
+//// [tests/cases/compiler/declarationEmitObjectLiteralAccessorsJs1.ts] ////
+
+//// [index.js]
+// same type accessors
+export const obj1 = {
+  /**
+   * my awesome getter (first in source order)
+   * @returns {string}
+   */
+  get x() {
+    return "";
+  },
+  /** 
+   * my awesome setter (second in source order)
+   * @param {string} a
+   */
+  set x(a) {},
+};
+
+// divergent accessors
+export const obj2 = {
+  /** 
+   * my awesome getter
+   * @returns {string}
+   */
+  get x() {
+    return "";
+  },
+  /** 
+   * my awesome setter
+   * @param {number} a
+   */
+  set x(a) {},
+};
+
+export const obj3 = {
+  /**
+   * my awesome getter
+   * @returns {string}
+   */
+  get x() {
+    return "";
+  },
+};
+
+export const obj4 = {
+  /**
+   * my awesome setter
+   * @param {number} a
+   */
+  set x(a) {},
+};
+
+
+
+
+//// [index.d.ts]
+export namespace obj1 {
+    let x: string;
+}
+export const obj2: {
+    /**
+     * my awesome getter
+     * @returns {string}
+     */
+    get x(): string;
+    /**
+     * my awesome setter
+     * @param {number} a
+     */
+    set x(a: number);
+};
+export namespace obj3 {
+    const x_1: string;
+    export { x_1 as x };
+}
+export namespace obj4 {
+    let x_2: number;
+    export { x_2 as x };
+}