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@notion-headless-cms/block-html

v1.0.4

Published

Notion ブロック (bookmark / embed / mention / toggle / callout / table など) を HTML にレンダリングするパッケージ

Readme

@notion-headless-cms/notion-embed

Notion の embed / bookmark / video / audio / pdf / file / image / link_preview / link_to_page ブロックを HTML に変換し、安全にレンダリングするための拡張パッケージ。

  • embed ブロック → provider が一致すればその出力を使い、なければ <iframe> で直接表示
  • bookmark ブロック → OGP カード(in-memory TTL キャッシュ付き)
  • Provider レジストリ で URL ごとに任意の HTML(<iframe> / <a> 等)を生成
  • rehype プラグインrehype-raw + rehype-sanitize をスキーマ拡張付きでまとめて適用
  • 各 provider が sanitizeSchema を持つため、provider 追加 = sanitize 拡張 = レンダー可能

インストール

pnpm add @notion-headless-cms/notion-embed

使い方

import { memoryCache } from "@notion-headless-cms/cache";
import { createClient } from "@notion-headless-cms/core";
import {
  notionEmbed,
  youtubeProvider,
} from "@notion-headless-cms/notion-embed";
import { notionSource } from "@notion-headless-cms/notion-source";
import { schema } from "./generated/nhc.schema";

const embed = notionEmbed({
  providers: [youtubeProvider({ display: "card" })],
});

export const cms = createClient({
  sources: {
    notion: notionSource({
      schema,
      token: process.env.NOTION_TOKEN!,
      blocks: embed.blocks,
    }),
  },
  renderer: embed.renderer,
  cache: [memoryCache()],
});

notionEmbed()rendererblocks を返す。renderercreateClient 直下に、blocksnotionSourceblocks オプションに渡す。

embed ブロックの挙動

  1. 登録済み provider が URL に一致 → provider が返す HTML を使う
  2. 一致しない → URL を src に持つ <iframe> を直接出力
<!-- 例: https://store.steampowered.com/widget/2868840/ -->
<div class="nhc-embed">
  <iframe src="https://store.steampowered.com/widget/2868840/" frameborder="0" loading="lazy"></iframe>
</div>

OGP カードにしたい場合は bookmark ブロックを使うこと。

カスタム provider

import { defineEmbedProvider } from "@notion-headless-cms/notion-embed";

export const myProvider = defineEmbedProvider({
  id: "my-widget",
  match: (url) => url.startsWith("https://my-service.example.com/"),
  render: ({ url }) => ({
    kind: "html",
    html: `<iframe src="${url}" loading="lazy"></iframe>`,
  }),
  sanitizeSchema: {
    tagNames: ["iframe"],
    attributes: { iframe: ["src", "loading"] },
    protocols: { src: ["https"] },
  },
});

ライセンス

MIT