源码快照 @ 2026-09-01 (source-only, 剔除非源码素材)

tools/scripts/check-css-has-performance.mjs

@@ -0,0 +1,61 @@
+#!/usr/bin/env node
+
+import { execFileSync } from "node:child_process";
+import { existsSync, readFileSync } from "node:fs";
+import { dirname, join, resolve } from "node:path";
+import { fileURLToPath } from "node:url";
+
+import {
+  analyzeCssHasPerformance,
+  isCssHasPerformancePath
+} from "./css-has-performance-policy.mjs";
+
+const scriptDirectory = dirname(fileURLToPath(import.meta.url));
+const workspaceRoot = resolve(scriptDirectory, "../..");
+const staged = process.argv.includes("--staged");
+const files = listFiles();
+const diagnostics = files.flatMap((path) =>
+  analyzeCssHasPerformance({ path, source: readSource(path) })
+);
+
+if (diagnostics.length > 0) {
+  console.error(
+    ":has() is forbidden on large dynamic CSS subjects because descendant mutations can invalidate the full subject subtree."
+  );
+  for (const diagnostic of diagnostics) {
+    console.error(
+      `- ${diagnostic.path}:${diagnostic.line}:${diagnostic.column} ${diagnostic.selector}: ${diagnostic.message}`
+    );
+  }
+  process.exitCode = 1;
+} else {
+  console.log(
+    `CSS :has() performance policy passed (${files.length} ${staged ? "staged " : ""}files)`
+  );
+}
+
+function listFiles() {
+  const args = staged
+    ? ["diff", "--cached", "--name-only", "--diff-filter=ACMR", "-z"]
+    : ["ls-files", "--cached", "--others", "--exclude-standard", "-z"];
+  return execFileSync("git", args, {
+    cwd: workspaceRoot,
+    encoding: "utf8"
+  })
+    .split("\0")
+    .filter(Boolean)
+    .map((path) => path.replaceAll("\\", "/"))
+    .filter(isCssHasPerformancePath)
+    .filter((path) => staged || existsSync(join(workspaceRoot, path)));
+}
+
+function readSource(path) {
+  if (staged) {
+    return execFileSync("git", ["show", `:${path}`], {
+      cwd: workspaceRoot,
+      encoding: "utf8",
+      maxBuffer: 20 * 1024 * 1024
+    });
+  }
+  return readFileSync(join(workspaceRoot, path), "utf8");
+}