81 lines
1.7 KiB
TypeScript
81 lines
1.7 KiB
TypeScript
import Dexie, { Table } from "dexie";
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import type { KV, KVStore } from "./kv_store.ts";
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export class DexieKVStore implements KVStore {
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db: Dexie;
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items: Table<KV, string>;
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constructor(
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dbName: string,
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tableName: string,
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indexedDB?: any,
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) {
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this.db = new Dexie(dbName, {
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indexedDB,
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});
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this.db.version(1).stores({
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[tableName]: "key",
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});
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this.items = this.db.table<KV, string>(tableName);
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}
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async del(key: string) {
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await this.items.delete(key);
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}
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async deletePrefix(prefix: string) {
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await this.items.where("key").startsWith(prefix).delete();
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}
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async deleteAll() {
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await this.items.clear();
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}
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async set(key: string, value: any) {
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await this.items.put({
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key,
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value,
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});
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}
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async batchSet(kvs: KV[]) {
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await this.items.bulkPut(
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kvs.map(({ key, value }) => ({
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key,
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value,
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})),
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);
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}
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async batchDelete(keys: string[]) {
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await this.items.bulkDelete(keys);
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}
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async batchGet(
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keys: string[],
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): Promise<(any | undefined)[]> {
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return (await this.items.bulkGet(keys)).map((result) => result?.value);
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}
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async get(key: string): Promise<any | null> {
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const result = await this.items.get({ key });
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return result ? result.value : null;
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}
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async has(key: string): Promise<boolean> {
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return await this.items.get({
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key,
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}) !== undefined;
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}
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async queryPrefix(
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keyPrefix: string,
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): Promise<{ key: string; value: any }[]> {
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const results = await this.items.where("key").startsWith(keyPrefix)
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.toArray();
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return results.map((result) => ({
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key: result.key,
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value: result.value,
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}));
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}
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}
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