one/dist/esm/platform/database/keyValue.mjs

One is a React framework for web, iOS, and Android apps.

import { assertOpen, requireKey, requireName, requireValue } from "./keyValueValidate.mjs";

function storagePrefix(name) {
	return `One.Database.kv|${name}|`;
}
function openKeyValue(options) {
	const name = requireName(options?.name);
	if (typeof localStorage === "undefined") {
		throw new Error("Database.openKeyValue requires localStorage in this runtime");
	}
	const prefix = storagePrefix(name);
	let closed = false;
	function matchingKeys() {
		const keys = [];
		for (let index = 0; index < localStorage.length; index++) {
			const stored = localStorage.key(index);
			if (stored?.startsWith(prefix)) keys.push(stored);
		}
		return keys;
	}
	return Object.freeze({
		getItem(key) {
			assertOpen("Database.getItem", closed);
			requireKey("Database.getItem", key);
			return localStorage.getItem(prefix + key);
		},
		setItem(key, value) {
			assertOpen("Database.setItem", closed);
			requireKey("Database.setItem", key);
			requireValue("Database.setItem", value);
			localStorage.setItem(prefix + key, value);
		},
		removeItem(key) {
			assertOpen("Database.removeItem", closed);
			requireKey("Database.removeItem", key);
			localStorage.removeItem(prefix + key);
		},
		getAllKeys() {
			assertOpen("Database.getAllKeys", closed);
			return matchingKeys().map((stored) => stored.slice(prefix.length)).sort();
		},
		clear() {
			assertOpen("Database.clear", closed);
			for (const stored of matchingKeys()) localStorage.removeItem(stored);
		},
		close() {
			closed = true;
		}
	});
}

export { openKeyValue };
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