diff --git a/src/compiler/checker.ts b/src/compiler/checker.ts
index 1c3bc622b0c..9001f12ce7a 100644
--- a/src/compiler/checker.ts
+++ b/src/compiler/checker.ts
@@ -5931,7 +5931,7 @@ namespace ts {
                             return factory.createPropertySignature(
                                 /*modifiers*/ undefined,
                                 name,
-                                t.typeExpression && isJSDocOptionalType(t.typeExpression.type) ? factory.createToken(SyntaxKind.QuestionToken) : undefined,
+                                t.isBracketed || t.typeExpression && isJSDocOptionalType(t.typeExpression.type) ? factory.createToken(SyntaxKind.QuestionToken) : undefined,
                                 overrideTypeNode || (t.typeExpression && visitNode(t.typeExpression.type, visitExistingNodeTreeSymbols)) || factory.createKeywordTypeNode(SyntaxKind.AnyKeyword)
                             );
                         }));
diff --git a/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps1.js b/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps1.js
new file mode 100644
index 00000000000..962299ec19c
--- /dev/null
+++ b/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps1.js
@@ -0,0 +1,48 @@
+//// [foo.js]
+/**
+ * foo
+ *
+ * @public
+ * @param {object} opts
+ * @param {number} opts.a
+ * @param {number} [opts.b]
+ * @param {number} [opts.c]
+ * @returns {number}
+ */
+function foo({ a, b, c }) {
+    return a + b + c;
+}
+
+
+//// [foo.js]
+/**
+ * foo
+ *
+ * @public
+ * @param {object} opts
+ * @param {number} opts.a
+ * @param {number} [opts.b]
+ * @param {number} [opts.c]
+ * @returns {number}
+ */
+function foo({ a, b, c }) {
+    return a + b + c;
+}
+
+
+//// [foo.d.ts]
+/**
+ * foo
+ *
+ * @public
+ * @param {object} opts
+ * @param {number} opts.a
+ * @param {number} [opts.b]
+ * @param {number} [opts.c]
+ * @returns {number}
+ */
+declare function foo({ a, b, c }: {
+    a: number;
+    b?: number;
+    c?: number;
+}): number;
diff --git a/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps1.symbols b/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps1.symbols
new file mode 100644
index 00000000000..9d008cb186a
--- /dev/null
+++ b/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps1.symbols
@@ -0,0 +1,23 @@
+=== tests/cases/conformance/jsdoc/declarations/foo.js ===
+/**
+ * foo
+ *
+ * @public
+ * @param {object} opts
+ * @param {number} opts.a
+ * @param {number} [opts.b]
+ * @param {number} [opts.c]
+ * @returns {number}
+ */
+function foo({ a, b, c }) {
+>foo : Symbol(foo, Decl(foo.js, 0, 0))
+>a : Symbol(a, Decl(foo.js, 10, 14))
+>b : Symbol(b, Decl(foo.js, 10, 17))
+>c : Symbol(c, Decl(foo.js, 10, 20))
+
+    return a + b + c;
+>a : Symbol(a, Decl(foo.js, 10, 14))
+>b : Symbol(b, Decl(foo.js, 10, 17))
+>c : Symbol(c, Decl(foo.js, 10, 20))
+}
+
diff --git a/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps1.types b/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps1.types
new file mode 100644
index 00000000000..f692812bd5a
--- /dev/null
+++ b/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps1.types
@@ -0,0 +1,25 @@
+=== tests/cases/conformance/jsdoc/declarations/foo.js ===
+/**
+ * foo
+ *
+ * @public
+ * @param {object} opts
+ * @param {number} opts.a
+ * @param {number} [opts.b]
+ * @param {number} [opts.c]
+ * @returns {number}
+ */
+function foo({ a, b, c }) {
+>foo : ({ a, b, c }: {    a: number;    b?: number;    c?: number;}) => number
+>a : number
+>b : number
+>c : number
+
+    return a + b + c;
+>a + b + c : number
+>a + b : number
+>a : number
+>b : number
+>c : number
+}
+
diff --git a/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps2.js b/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps2.js
new file mode 100644
index 00000000000..8157df664ab
--- /dev/null
+++ b/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps2.js
@@ -0,0 +1,49 @@
+//// [foo.js]
+/**
+ * foo
+ *
+ * @public
+ * @param {object} opts
+ * @param {number} opts.a
+ * @param {number} [opts.b]
+ * @param {number} [opts.c]
+ * @returns {number}
+ */
+function foo({ a, b, c }) {
+    return a + (b ?? 0) + (c ?? 0);
+}
+
+
+//// [foo.js]
+"use strict";
+/**
+ * foo
+ *
+ * @public
+ * @param {object} opts
+ * @param {number} opts.a
+ * @param {number} [opts.b]
+ * @param {number} [opts.c]
+ * @returns {number}
+ */
+function foo({ a, b, c }) {
+    return a + (b ?? 0) + (c ?? 0);
+}
+
+
+//// [foo.d.ts]
+/**
+ * foo
+ *
+ * @public
+ * @param {object} opts
+ * @param {number} opts.a
+ * @param {number} [opts.b]
+ * @param {number} [opts.c]
+ * @returns {number}
+ */
+declare function foo({ a, b, c }: {
+    a: number;
+    b?: number | undefined;
+    c?: number | undefined;
+}): number;
diff --git a/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps2.symbols b/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps2.symbols
new file mode 100644
index 00000000000..9d6df290f62
--- /dev/null
+++ b/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps2.symbols
@@ -0,0 +1,23 @@
+=== tests/cases/conformance/jsdoc/declarations/foo.js ===
+/**
+ * foo
+ *
+ * @public
+ * @param {object} opts
+ * @param {number} opts.a
+ * @param {number} [opts.b]
+ * @param {number} [opts.c]
+ * @returns {number}
+ */
+function foo({ a, b, c }) {
+>foo : Symbol(foo, Decl(foo.js, 0, 0))
+>a : Symbol(a, Decl(foo.js, 10, 14))
+>b : Symbol(b, Decl(foo.js, 10, 17))
+>c : Symbol(c, Decl(foo.js, 10, 20))
+
+    return a + (b ?? 0) + (c ?? 0);
+>a : Symbol(a, Decl(foo.js, 10, 14))
+>b : Symbol(b, Decl(foo.js, 10, 17))
+>c : Symbol(c, Decl(foo.js, 10, 20))
+}
+
diff --git a/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps2.types b/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps2.types
new file mode 100644
index 00000000000..b976d6fae6e
--- /dev/null
+++ b/tests/baselines/reference/jsDeclarationsOptionalTypeLiteralProps2.types
@@ -0,0 +1,31 @@
+=== tests/cases/conformance/jsdoc/declarations/foo.js ===
+/**
+ * foo
+ *
+ * @public
+ * @param {object} opts
+ * @param {number} opts.a
+ * @param {number} [opts.b]
+ * @param {number} [opts.c]
+ * @returns {number}
+ */
+function foo({ a, b, c }) {
+>foo : ({ a, b, c }: {    a: number;    b?: number | undefined;    c?: number | undefined;}) => number
+>a : number
+>b : number | undefined
+>c : number | undefined
+
+    return a + (b ?? 0) + (c ?? 0);
+>a + (b ?? 0) + (c ?? 0) : number
+>a + (b ?? 0) : number
+>a : number
+>(b ?? 0) : number
+>b ?? 0 : number
+>b : number | undefined
+>0 : 0
+>(c ?? 0) : number
+>c ?? 0 : number
+>c : number | undefined
+>0 : 0
+}
+
diff --git a/tests/baselines/reference/jsdocParamTagTypeLiteral.types b/tests/baselines/reference/jsdocParamTagTypeLiteral.types
index ef926eec222..d38f3fd20cc 100644
--- a/tests/baselines/reference/jsdocParamTagTypeLiteral.types
+++ b/tests/baselines/reference/jsdocParamTagTypeLiteral.types
@@ -23,7 +23,7 @@ normal(12);
  * @param {string} [opts1.w="hi"] doc5
  */
 function foo1(opts1) {
->foo1 : (opts1: {    x: string;    y?: string | undefined;    z: string | undefined;    w: string | undefined;}) => void
+>foo1 : (opts1: {    x: string;    y?: string | undefined;    z?: string | undefined;    w?: string | undefined;}) => void
 >opts1 : { x: string; y?: string | undefined; z?: string | undefined; w?: string | undefined; }
 
     opts1.x;
@@ -92,7 +92,7 @@ foo3({x: 'abc'});
  * @param {string} [opts4[].w="hi"]
  */
 function foo4(opts4) {
->foo4 : (opts4: {    x: string;    y?: string | undefined;    z: string;    w: string;}) => void
+>foo4 : (opts4: {    x: string;    y?: string | undefined;    z?: string;    w?: string;}) => void
 >opts4 : { x: string; y?: string | undefined; z?: string | undefined; w?: string | undefined; }[]
 
     opts4[0].x;
diff --git a/tests/cases/conformance/jsdoc/declarations/jsDeclarationsOptionalTypeLiteralProps1.ts b/tests/cases/conformance/jsdoc/declarations/jsDeclarationsOptionalTypeLiteralProps1.ts
new file mode 100644
index 00000000000..d0797b47c4e
--- /dev/null
+++ b/tests/cases/conformance/jsdoc/declarations/jsDeclarationsOptionalTypeLiteralProps1.ts
@@ -0,0 +1,19 @@
+// @allowJs: true
+// @checkJs: true
+// @target: esnext
+// @outDir: ./out
+// @declaration: true
+// @filename: foo.js
+/**
+ * foo
+ *
+ * @public
+ * @param {object} opts
+ * @param {number} opts.a
+ * @param {number} [opts.b]
+ * @param {number} [opts.c]
+ * @returns {number}
+ */
+function foo({ a, b, c }) {
+    return a + b + c;
+}
diff --git a/tests/cases/conformance/jsdoc/declarations/jsDeclarationsOptionalTypeLiteralProps2.ts b/tests/cases/conformance/jsdoc/declarations/jsDeclarationsOptionalTypeLiteralProps2.ts
new file mode 100644
index 00000000000..860622295c6
--- /dev/null
+++ b/tests/cases/conformance/jsdoc/declarations/jsDeclarationsOptionalTypeLiteralProps2.ts
@@ -0,0 +1,20 @@
+// @allowJs: true
+// @checkJs: true
+// @strict: true
+// @target: esnext
+// @outDir: ./out
+// @declaration: true
+// @filename: foo.js
+/**
+ * foo
+ *
+ * @public
+ * @param {object} opts
+ * @param {number} opts.a
+ * @param {number} [opts.b]
+ * @param {number} [opts.c]
+ * @returns {number}
+ */
+function foo({ a, b, c }) {
+    return a + (b ?? 0) + (c ?? 0);
+}