diff --git a/tests/baselines/reference/typesForUrlSearchParams01.errors.txt b/tests/baselines/reference/typesForUrlSearchParams01.errors.txt
new file mode 100644
index 00000000000..964029aab3e
--- /dev/null
+++ b/tests/baselines/reference/typesForUrlSearchParams01.errors.txt
@@ -0,0 +1,65 @@
+typesForUrlSearchParams01.ts(2,5): error TS2322: Type '[string, string]' is not assignable to type 'string'.
+typesForUrlSearchParams01.ts(3,5): error TS2322: Type '[string, true]' is not assignable to type 'string'.
+typesForUrlSearchParams01.ts(4,5): error TS2322: Type '[string, false]' is not assignable to type 'string'.
+typesForUrlSearchParams01.ts(5,5): error TS2322: Type '[string, number]' is not assignable to type 'string'.
+typesForUrlSearchParams01.ts(8,22): error TS2345: Argument of type 'boolean' is not assignable to parameter of type 'string'.
+typesForUrlSearchParams01.ts(9,25): error TS2345: Argument of type 'number' is not assignable to parameter of type 'string'.
+typesForUrlSearchParams01.ts(10,25): error TS2345: Argument of type 'number' is not assignable to parameter of type 'string'.
+typesForUrlSearchParams01.ts(17,28): error TS2495: Type 'URLSearchParams' is not an array type or a string type.
+typesForUrlSearchParams01.ts(21,37): error TS2339: Property 'entries' does not exist on type 'URLSearchParams'.
+typesForUrlSearchParams01.ts(25,30): error TS2339: Property 'values' does not exist on type 'URLSearchParams'.
+
+
+==== typesForUrlSearchParams01.ts (10 errors) ====
+    export const carQuery = new URLSearchParams([
+        ["query", "suv"],
+        ~~~~~~~~~~~~~~~~
+!!! error TS2322: Type '[string, string]' is not assignable to type 'string'.
+        ["new", true],
+        ~~~~~~~~~~~~~
+!!! error TS2322: Type '[string, true]' is not assignable to type 'string'.
+        ["accidents", false],
+        ~~~~~~~~~~~~~~~~~~~~
+!!! error TS2322: Type '[string, false]' is not assignable to type 'string'.
+        ["miles", 42_000],
+        ~~~~~~~~~~~~~~~~~
+!!! error TS2322: Type '[string, number]' is not assignable to type 'string'.
+    ]);
+    
+    carQuery.set("used", true);
+                         ~~~~
+!!! error TS2345: Argument of type 'boolean' is not assignable to parameter of type 'string'.
+    carQuery.append("year", 2023);
+                            ~~~~
+!!! error TS2345: Argument of type 'number' is not assignable to parameter of type 'string'.
+    carQuery.append("year", 2024);
+                            ~~~~
+!!! error TS2345: Argument of type 'number' is not assignable to parameter of type 'string'.
+    
+    let str: string | null, strs: string[];
+    
+    str = carQuery.get("query");
+    strs = carQuery.getAll("year");
+    
+    for (const [key, value] of carQuery) {
+                               ~~~~~~~~
+!!! error TS2495: Type 'URLSearchParams' is not an array type or a string type.
+        str = key;
+        str = value;
+    }
+    for (const [key, value] of carQuery.entries()) {
+                                        ~~~~~~~
+!!! error TS2339: Property 'entries' does not exist on type 'URLSearchParams'.
+        str = key;
+        str = value;
+    }
+    for (const value of carQuery.values()) {
+                                 ~~~~~~
+!!! error TS2339: Property 'values' does not exist on type 'URLSearchParams'.
+        str = value;
+    }
+    carQuery.forEach((value, key) => {
+        str = key;
+        str = value;
+    });
+    
\ No newline at end of file
diff --git a/tests/baselines/reference/typesForUrlSearchParams01.js b/tests/baselines/reference/typesForUrlSearchParams01.js
new file mode 100644
index 00000000000..9e73281da10
--- /dev/null
+++ b/tests/baselines/reference/typesForUrlSearchParams01.js
@@ -0,0 +1,70 @@
+//// [tests/cases/compiler/typesForUrlSearchParams01.ts] ////
+
+//// [typesForUrlSearchParams01.ts]
+export const carQuery = new URLSearchParams([
+    ["query", "suv"],
+    ["new", true],
+    ["accidents", false],
+    ["miles", 42_000],
+]);
+
+carQuery.set("used", true);
+carQuery.append("year", 2023);
+carQuery.append("year", 2024);
+
+let str: string | null, strs: string[];
+
+str = carQuery.get("query");
+strs = carQuery.getAll("year");
+
+for (const [key, value] of carQuery) {
+    str = key;
+    str = value;
+}
+for (const [key, value] of carQuery.entries()) {
+    str = key;
+    str = value;
+}
+for (const value of carQuery.values()) {
+    str = value;
+}
+carQuery.forEach((value, key) => {
+    str = key;
+    str = value;
+});
+
+
+//// [typesForUrlSearchParams01.js]
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.carQuery = void 0;
+exports.carQuery = new URLSearchParams([
+    ["query", "suv"],
+    ["new", true],
+    ["accidents", false],
+    ["miles", 42000],
+]);
+exports.carQuery.set("used", true);
+exports.carQuery.append("year", 2023);
+exports.carQuery.append("year", 2024);
+var str, strs;
+str = exports.carQuery.get("query");
+strs = exports.carQuery.getAll("year");
+for (var _i = 0, carQuery_1 = exports.carQuery; _i < carQuery_1.length; _i++) {
+    var _a = carQuery_1[_i], key = _a[0], value = _a[1];
+    str = key;
+    str = value;
+}
+for (var _b = 0, _c = exports.carQuery.entries(); _b < _c.length; _b++) {
+    var _d = _c[_b], key = _d[0], value = _d[1];
+    str = key;
+    str = value;
+}
+for (var _e = 0, _f = exports.carQuery.values(); _e < _f.length; _e++) {
+    var value = _f[_e];
+    str = value;
+}
+exports.carQuery.forEach(function (value, key) {
+    str = key;
+    str = value;
+});
diff --git a/tests/baselines/reference/typesForUrlSearchParams01.symbols b/tests/baselines/reference/typesForUrlSearchParams01.symbols
new file mode 100644
index 00000000000..2b1fcf46e78
--- /dev/null
+++ b/tests/baselines/reference/typesForUrlSearchParams01.symbols
@@ -0,0 +1,95 @@
+//// [tests/cases/compiler/typesForUrlSearchParams01.ts] ////
+
+=== typesForUrlSearchParams01.ts ===
+export const carQuery = new URLSearchParams([
+>carQuery : Symbol(carQuery, Decl(typesForUrlSearchParams01.ts, 0, 12))
+>URLSearchParams : Symbol(URLSearchParams, Decl(lib.dom.d.ts, --, --), Decl(lib.dom.d.ts, --, --))
+
+    ["query", "suv"],
+    ["new", true],
+    ["accidents", false],
+    ["miles", 42_000],
+]);
+
+carQuery.set("used", true);
+>carQuery.set : Symbol(URLSearchParams.set, Decl(lib.dom.d.ts, --, --))
+>carQuery : Symbol(carQuery, Decl(typesForUrlSearchParams01.ts, 0, 12))
+>set : Symbol(URLSearchParams.set, Decl(lib.dom.d.ts, --, --))
+
+carQuery.append("year", 2023);
+>carQuery.append : Symbol(URLSearchParams.append, Decl(lib.dom.d.ts, --, --))
+>carQuery : Symbol(carQuery, Decl(typesForUrlSearchParams01.ts, 0, 12))
+>append : Symbol(URLSearchParams.append, Decl(lib.dom.d.ts, --, --))
+
+carQuery.append("year", 2024);
+>carQuery.append : Symbol(URLSearchParams.append, Decl(lib.dom.d.ts, --, --))
+>carQuery : Symbol(carQuery, Decl(typesForUrlSearchParams01.ts, 0, 12))
+>append : Symbol(URLSearchParams.append, Decl(lib.dom.d.ts, --, --))
+
+let str: string | null, strs: string[];
+>str : Symbol(str, Decl(typesForUrlSearchParams01.ts, 11, 3))
+>strs : Symbol(strs, Decl(typesForUrlSearchParams01.ts, 11, 23))
+
+str = carQuery.get("query");
+>str : Symbol(str, Decl(typesForUrlSearchParams01.ts, 11, 3))
+>carQuery.get : Symbol(URLSearchParams.get, Decl(lib.dom.d.ts, --, --))
+>carQuery : Symbol(carQuery, Decl(typesForUrlSearchParams01.ts, 0, 12))
+>get : Symbol(URLSearchParams.get, Decl(lib.dom.d.ts, --, --))
+
+strs = carQuery.getAll("year");
+>strs : Symbol(strs, Decl(typesForUrlSearchParams01.ts, 11, 23))
+>carQuery.getAll : Symbol(URLSearchParams.getAll, Decl(lib.dom.d.ts, --, --))
+>carQuery : Symbol(carQuery, Decl(typesForUrlSearchParams01.ts, 0, 12))
+>getAll : Symbol(URLSearchParams.getAll, Decl(lib.dom.d.ts, --, --))
+
+for (const [key, value] of carQuery) {
+>key : Symbol(key, Decl(typesForUrlSearchParams01.ts, 16, 12))
+>value : Symbol(value, Decl(typesForUrlSearchParams01.ts, 16, 16))
+>carQuery : Symbol(carQuery, Decl(typesForUrlSearchParams01.ts, 0, 12))
+
+    str = key;
+>str : Symbol(str, Decl(typesForUrlSearchParams01.ts, 11, 3))
+>key : Symbol(key, Decl(typesForUrlSearchParams01.ts, 16, 12))
+
+    str = value;
+>str : Symbol(str, Decl(typesForUrlSearchParams01.ts, 11, 3))
+>value : Symbol(value, Decl(typesForUrlSearchParams01.ts, 16, 16))
+}
+for (const [key, value] of carQuery.entries()) {
+>key : Symbol(key, Decl(typesForUrlSearchParams01.ts, 20, 12))
+>value : Symbol(value, Decl(typesForUrlSearchParams01.ts, 20, 16))
+>carQuery : Symbol(carQuery, Decl(typesForUrlSearchParams01.ts, 0, 12))
+
+    str = key;
+>str : Symbol(str, Decl(typesForUrlSearchParams01.ts, 11, 3))
+>key : Symbol(key, Decl(typesForUrlSearchParams01.ts, 20, 12))
+
+    str = value;
+>str : Symbol(str, Decl(typesForUrlSearchParams01.ts, 11, 3))
+>value : Symbol(value, Decl(typesForUrlSearchParams01.ts, 20, 16))
+}
+for (const value of carQuery.values()) {
+>value : Symbol(value, Decl(typesForUrlSearchParams01.ts, 24, 10))
+>carQuery : Symbol(carQuery, Decl(typesForUrlSearchParams01.ts, 0, 12))
+
+    str = value;
+>str : Symbol(str, Decl(typesForUrlSearchParams01.ts, 11, 3))
+>value : Symbol(value, Decl(typesForUrlSearchParams01.ts, 24, 10))
+}
+carQuery.forEach((value, key) => {
+>carQuery.forEach : Symbol(URLSearchParams.forEach, Decl(lib.dom.d.ts, --, --))
+>carQuery : Symbol(carQuery, Decl(typesForUrlSearchParams01.ts, 0, 12))
+>forEach : Symbol(URLSearchParams.forEach, Decl(lib.dom.d.ts, --, --))
+>value : Symbol(value, Decl(typesForUrlSearchParams01.ts, 27, 18))
+>key : Symbol(key, Decl(typesForUrlSearchParams01.ts, 27, 24))
+
+    str = key;
+>str : Symbol(str, Decl(typesForUrlSearchParams01.ts, 11, 3))
+>key : Symbol(key, Decl(typesForUrlSearchParams01.ts, 27, 24))
+
+    str = value;
+>str : Symbol(str, Decl(typesForUrlSearchParams01.ts, 11, 3))
+>value : Symbol(value, Decl(typesForUrlSearchParams01.ts, 27, 18))
+
+});
+
diff --git a/tests/baselines/reference/typesForUrlSearchParams01.types b/tests/baselines/reference/typesForUrlSearchParams01.types
new file mode 100644
index 00000000000..9b81c5543d7
--- /dev/null
+++ b/tests/baselines/reference/typesForUrlSearchParams01.types
@@ -0,0 +1,143 @@
+//// [tests/cases/compiler/typesForUrlSearchParams01.ts] ////
+
+=== typesForUrlSearchParams01.ts ===
+export const carQuery = new URLSearchParams([
+>carQuery : URLSearchParams
+>new URLSearchParams([    ["query", "suv"],    ["new", true],    ["accidents", false],    ["miles", 42_000],]) : URLSearchParams
+>URLSearchParams : { new (init?: string | string[][] | Record<string, string> | URLSearchParams | undefined): URLSearchParams; prototype: URLSearchParams; }
+>[    ["query", "suv"],    ["new", true],    ["accidents", false],    ["miles", 42_000],] : ((string | boolean)[] | (string | number)[])[]
+
+    ["query", "suv"],
+>["query", "suv"] : string[]
+>"query" : "query"
+>"suv" : "suv"
+
+    ["new", true],
+>["new", true] : (string | boolean)[]
+>"new" : "new"
+>true : true
+
+    ["accidents", false],
+>["accidents", false] : (string | boolean)[]
+>"accidents" : "accidents"
+>false : false
+
+    ["miles", 42_000],
+>["miles", 42_000] : (string | number)[]
+>"miles" : "miles"
+>42_000 : 42000
+
+]);
+
+carQuery.set("used", true);
+>carQuery.set("used", true) : void
+>carQuery.set : (name: string, value: string) => void
+>carQuery : URLSearchParams
+>set : (name: string, value: string) => void
+>"used" : "used"
+>true : true
+
+carQuery.append("year", 2023);
+>carQuery.append("year", 2023) : void
+>carQuery.append : (name: string, value: string) => void
+>carQuery : URLSearchParams
+>append : (name: string, value: string) => void
+>"year" : "year"
+>2023 : 2023
+
+carQuery.append("year", 2024);
+>carQuery.append("year", 2024) : void
+>carQuery.append : (name: string, value: string) => void
+>carQuery : URLSearchParams
+>append : (name: string, value: string) => void
+>"year" : "year"
+>2024 : 2024
+
+let str: string | null, strs: string[];
+>str : string | null
+>strs : string[]
+
+str = carQuery.get("query");
+>str = carQuery.get("query") : string | null
+>str : string | null
+>carQuery.get("query") : string | null
+>carQuery.get : (name: string) => string | null
+>carQuery : URLSearchParams
+>get : (name: string) => string | null
+>"query" : "query"
+
+strs = carQuery.getAll("year");
+>strs = carQuery.getAll("year") : string[]
+>strs : string[]
+>carQuery.getAll("year") : string[]
+>carQuery.getAll : (name: string) => string[]
+>carQuery : URLSearchParams
+>getAll : (name: string) => string[]
+>"year" : "year"
+
+for (const [key, value] of carQuery) {
+>key : any
+>value : any
+>carQuery : URLSearchParams
+
+    str = key;
+>str = key : any
+>str : string | null
+>key : any
+
+    str = value;
+>str = value : any
+>str : string | null
+>value : any
+}
+for (const [key, value] of carQuery.entries()) {
+>key : any
+>value : any
+>carQuery.entries() : any
+>carQuery.entries : any
+>carQuery : URLSearchParams
+>entries : any
+
+    str = key;
+>str = key : any
+>str : string | null
+>key : any
+
+    str = value;
+>str = value : any
+>str : string | null
+>value : any
+}
+for (const value of carQuery.values()) {
+>value : any
+>carQuery.values() : any
+>carQuery.values : any
+>carQuery : URLSearchParams
+>values : any
+
+    str = value;
+>str = value : any
+>str : string | null
+>value : any
+}
+carQuery.forEach((value, key) => {
+>carQuery.forEach((value, key) => {    str = key;    str = value;}) : void
+>carQuery.forEach : (callbackfn: (value: string, key: string, parent: URLSearchParams) => void, thisArg?: any) => void
+>carQuery : URLSearchParams
+>forEach : (callbackfn: (value: string, key: string, parent: URLSearchParams) => void, thisArg?: any) => void
+>(value, key) => {    str = key;    str = value;} : (value: string, key: string) => void
+>value : string
+>key : string
+
+    str = key;
+>str = key : string
+>str : string | null
+>key : string
+
+    str = value;
+>str = value : string
+>str : string | null
+>value : string
+
+});
+