サンプル

Intercept and customize subresource loading in JSDOM using ResourceLoader

sha256:729cd83d1c1f9d920bc16f81b26620669e5f6eb3dd0f9c878ce052f183c7f713

MIT-0

実行証拠

宣言された環境と署名済みの実行を分けてあります。このサンプルが何をどこで実行したかをそのまま確認できます。

宣言された環境 node 22.23 linux 24 · ubuntu · glibc 2.39 x64 node 22.23 javascript npm 10

環境	コントラクト	ステージ	実行日
node 22 · linux alpine/x64 · docker ed25519:c1973797be207ac4	PASS	compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS CONTAINER_RUN · node-typescript@1node:22-alpine@sha256:c610fcdfb1d5…	2026-08-28

HOW

ゴール: Intercept and customize subresource loading in JSDOM using ResourceLoader
パッケージ: jsdom 26.1.0
シンボル: JSDOM
ResourceLoader
環境: node 22.23.2
作成日: 2026-08-28T06:56:19Z

ResourceLoader constructor accepts configuration options including userAgent, proxy, and strictSSL.
Instantiating JSDOM without configuring resources suppresses all external subresource fetching for scripts and stylesheets.
Attaching a custom ResourceLoader subclass intercepts subresource fetch requests and passes the requesting element reference in fetch options.
Returning a Buffer promise from ResourceLoader fetch resolves synthetic external script content and executes it within the JSDOM window context under runScripts dangerously.
Returning a Buffer promise from ResourceLoader fetch parses external stylesheets into document.styleSheets rules.
Returning null from ResourceLoader fetch silently blocks subresource fetching without throwing exceptions, emitting jsdomError, or firing element event handlers.
Rejecting the promise returned from ResourceLoader fetch triggers element onerror handlers and emits a jsdomError event to VirtualConsole.

匿名