storage-manager-js/src/utils.ts

A little way to control Cookies, LocalStorage and SessionStorage without tears

export const map = (object: object, callback: (x: string) => void): void => {
	try {
		Object.keys(object).forEach(callback);
	} catch (error) {
		window.console.log(error);
	}
};

export const isNil = <T>(item: T) => item === null || item === undefined;

export const isPrimitive = (a: any) => {
	const type = typeof a;
	return type === "string" || type === "number" || type === "boolean" || isNil(a);
};

export const getStorage = <T>(key: string, storage: Storage) => {
	const str = storage.getItem(key);
	try {
		return JSON.parse(str as never) as T;
	} catch (error) {
		return str ?? null;
	}
};

export const json = <T extends {}>(storage: Storage): T =>
	Object.keys(storage).reduce<T>(
		(acc, key) => ({
			...acc,
			[key]: getStorage(key, storage),
		}),
		{} as T,
	);