feat: Added getAllQuery utility function

package.json

@@ -49,7 +49,8 @@
     "@vitest/coverage-v8": "^3.2.4",
     "typescript": "~5.8.3",
     "vite": "^7.1.2",
-    "vitest": "^3.2.4"
+    "vitest": "^3.2.4",
+    "jsdom": "^26.1.0"
   },
   "files": [
     "dist"

package/index.ts

@@ -4,3 +4,4 @@ export * as cookieUtil from "./cookieUtil";
 export * as numberUtil from "./numberUtil";
 export * as validationUtil from "./validationUtil";
 export * as commonUtil from "./commonUtil";
+export * as searchQueryUtil from "./searchQueryUtil";

package/searchQueryUtil/getAllQuery/index.test.ts

@@ -0,0 +1,26 @@
+import { describe, expect, test, vi, afterEach } from "vitest";
+import getAllQuery from ".";
+
+describe("getAll 유틸 함수 테스트", () => {
+  afterEach(() => {
+    vi.unstubAllGlobals();
+  });
+
+  test("여러 개의 동일한 키가 있는 쿼리 스트링을 올바르게 처리해야 함", () => {
+    vi.stubGlobal("location", {
+      search: "?key=value1&key=value2&key=value3",
+    });
+
+    const result = getAllQuery();
+    expect(result).toEqual({ key: ["value1", "value2", "value3"] });
+  });
+
+  test("여러 키-값 쌍이 있는 쿼리 스트링을 올바르게 처리해야 함", () => {
+    vi.stubGlobal("location", {
+      search: "?name=John&age=30&city=NewYork",
+    });
+
+    const result = getAllQuery();
+    expect(result).toEqual({ name: "John", age: "30", city: "NewYork" });
+  });
+});

package/searchQueryUtil/getAllQuery/index.ts

@@ -0,0 +1,22 @@
+export default function getAllQuery(): Record<string, string | string[]> {
+  if (window && typeof window.URLSearchParams === "undefined") {
+    throw new Error("URLSearchParams is not supported in this environment.");
+  }
+
+  const params = new URLSearchParams(window.location.search);
+  const result: { [key: string]: string | string[] } = {};
+
+  for (const [key, value] of params.entries()) {
+    if (result[key]) {
+      if (Array.isArray(result[key])) {
+        result[key].push(value);
+      } else {
+        result[key] = [result[key], value];
+      }
+    } else {
+      result[key] = value;
+    }
+  }
+
+  return result;
+}

package/searchQueryUtil/index.ts

@@ -0,0 +1 @@
+export { default as getAllQuery } from "./getAllQuery";