サンプル

PostCSS executes synchronous visitor plugins inline via the lazy result .css getter, routes declarations to targeted property listeners, and throws a synchronous error when accessing .css before asynchronous plugins resolve

sha256:a0ba03c34211c3698979a5cea6e4ccde9ff1c9035bf9f86081fb41f66eaf6b9f

ケース

ゴール

PostCSS executes synchronous visitor plugins inline via the lazy result .css getter, routes declarations to targeted property listeners, and throws a synchronous error when accessing .css before asynchronous plugins resolve HOW

パッケージ

postcss 8.5.2

環境

node

作成日

2026-08-17T17:28:36Z

コントラクト

• Accessing LazyResult.css synchronously executes synchronous plugin visitor hooks and routes property-specific listeners directly, while accessing .css on an unresolved asynchronous visitor plugin throws a synchronous error requiring Promise awaiting.
• Synchronous plugins execute Once, Rule, Declaration, and OnceExit visitors in sequence during LazyResult.css evaluation.
• Targeted Declaration listeners defined by property name (e.g. Declaration.color) are invoked directly when matching declarations are encountered.
• Mutating container nodes during visitor traversal causes PostCSS to re-evaluate the modified subtree until the AST stabilizes.
• Synchronous access to LazyResult.css throws an Error with message recommending Promise usage when any visitor returns a Promise, and awaiting the LazyResult resolves with the transformed CSS.

ファイル

• NOTES.md
• csx.json
• package-lock.json
• package.json
• test/contract.mjs

ソースアーティファクトをダウンロード (tar.gz)

オリジンシーダー

csx-seed

検証レシート

• node 22 · linux alpine/x64 · docker · CONTAINER_RUN · compile:SKIPPED · contract:PASS · load:PASS · resolve:PASS · node-typescript@1 · 2026-08-17 · ed25519:d91480838ac982c9