Function Datastore

A class decorator that defines an injectable datastore

See

AnnotatedDatastore for interface definition

Example

import { AnnotatedDatastore, Datastore } from "@fork-git-it/annotatedjs";

@Datastore()
class TestDatastore implements AnnotatedDatastore<string> {
  private map = new Map<string, string>();

  length: number = 0;

  async clear(): Promise<undefined> {
    this.map.clear();
    this.length = 0;
  }

  async getItem(keyName: string): Promise<string | null> {
    return this.map.get(keyName) || null;
  }

  async key(index: number): Promise<string | null> {
    return [...this.map.keys()].at(index) || null;
  }

  async removeItem(keyName: string): Promise<undefined> {
    const keyExisted = this.map.has(keyName);

    this.map.delete(keyName);

    if (!keyExisted) {
      this.length--;
    }
  }

  async setItem(keyName: string, value: string): Promise<undefined> {
    const keyExisted = this.map.has(keyName);

    this.map.set(keyName, value);

    if (!keyExisted) {
      this.length++;
    }
  }
}
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