ContentDB - A tiny JS cache-in-disk database for embeddable systems

contentdb.ts

import { promises as fs } from "fs"
import path from "path"

export interface NodeItem {
  id: string
  data: any
}

const cache: NodeItem[] = []

const contentdb = {
  list: async () => {
    return cache
  },
  get: async (id: NodeItem["id"]) => {
    const node = cache.find((node) => node.id === id)?.data

    if (!node) {
      try {
        const data = await fs.readFile(path.join(process.cwd(), "content.db"))
        ;(JSON.parse(data as unknown as string) as NodeItem[])?.forEach(
          (node) => cache.push(node),
        )
        return cache.find((node) => node.id === id)?.data
      } catch (err) {
        console.warn(`Warn: content.db not present`)
      }
    }
  },
  set: async (node: NodeItem) => {
    return cache.push(node)
  },
  save: async () => {
    return fs.writeFile(
      path.join(process.cwd(), "content.db"),
      JSON.stringify(cache),
    )
  },
}

export default contentdb