npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2026 – Pkg Stats / Ryan Hefner

@f12o/papyr-backend

v2026.5.0

Published

Papyr バックエンドアダプタのインターフェース

Readme

@f12o/papyr-backend

Papyr バックエンドアダプタのインターフェース

Papyr monorepo の一部です。詳細は リポジトリ ROOT README を参照してください。

Install

npm install @f12o/papyr-backend

Portable contract

BackendAdapter は「全部の adapter が同じ query 言語や同じ storage 特性を持つ」ことは要求しません。代わりに、次の baseline semantics だけを portable contract として共有します。

| API | Portable に期待してよいこと | | --- | --- | | list(query?) | PapyrDocument[] を返す。limit を指定した場合は returned items 数の upper bound として扱い、limit: 0 は空 page を返す。nextCursor は opaque token で、返された場合だけ次の list({ cursor }) に渡せる。順序は adapter-specific。 | | get(id) | document が無ければ null を返す。 | | put(doc) | doc.id を key として create / replace する。 | | delete(id) | document が既に無くても安全に呼べる。 | | search?(query) | optional capability。実装する場合は better-to-worse order の SearchHit[] を返し、各 hit は id と numeric score を持つ。snippet は optional。 |

Portable ではないもの

次は intentionally adapter-specific です。

  • filter の shape / dialect / operator semantics
  • backend-specific ordering guarantees
  • backend-native pagination token format
  • backend-imposed page size caps
  • search relevance model や snippet 生成方法

そのため、cross-adapter な code は portable contract だけに依存し、filter や ordering の詳細は個別 adapter docs / implementation を前提にしてください。

Conformance suite

custom adapter や既存 adapter test では、shared helper を使って portable contract を再利用できます。

import { assertBackendAdapterConformance } from '@f12o/papyr-backend/testing';
import { createFsAdapter } from '@f12o/papyr-adapter-fs';

await assertBackendAdapterConformance({
  createAdapter: () => createFsAdapter({ dir: '/tmp/papyr-docs' }),
});

pagination を portable contract として検証したい adapter では supportsPagination: true を指定してください。search を実装する adapter では search expectation を与えることで hit shape / ordering の最低契約も test できます。

License

MIT