Skrf 146 local storage

src/constants/storageKeys.ts

@@ -0,0 +1,5 @@
+const STORAGE_KEYS = {
+  token: 'token',
+} as const;
+
+export { STORAGE_KEYS };

src/utils/localStorage.ts

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+import { STORAGE_KEYS } from '@constants/storageKeys';
+
+type StorageKeys = keyof typeof STORAGE_KEYS;
+
+const setStorage = <T>(key: StorageKeys, value: T) => {
+  try {
+    const jsonValue = JSON.stringify(value);
+    localStorage.setItem(key, jsonValue);
+  } catch {
+    throw new Error('로컬 스토리지에 값을 저장하는 도중 오류가 발생했습니다.');
+  }
+};
+
+const getStorage = <T>(key: StorageKeys, defaultValue?: unknown): T => {
+  const jsonValue = localStorage.getItem(key);
+  if (!jsonValue && !defaultValue) {
+    throw new Error('로컬 스토리지에 존재하지 않는 값입니다.');
+  }
+  return jsonValue ? JSON.parse(jsonValue) : defaultValue;
+};
+
+const deleteStorage = (key: StorageKeys) => {
+  localStorage.removeItem(key);
+};
+
+export { getStorage, setStorage, deleteStorage };