From 3c572cf70a09a00caf05262c964085cca4bfac87 Mon Sep 17 00:00:00 2001
From: Tianyi Cui <53024+tianyicui@users.noreply.github.com>
Date: Tue, 7 Jul 2026 16:22:43 +0800
Subject: [PATCH] fix CI: stop fixture programs parsing the default lib (spec
 timeouts)
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The coverage CI lane timed out (5000ms/test) in verify-export-jsdoc.spec.ts:
every test builds a ts.Program, and the fixture branch of
loadCompilerOptions omitted noLib, so each of the 34 tests parsed the
full default lib — measured 231ms/program bare, ~1.5s/test under
coverage instrumentation locally, past 5s on a 2-core runner. Fixtures
are self-contained and nothing in the walk resolves a lib symbol:
noLib + types:[] drops program creation to ~1ms and the spec's
coverage-mode test time from 53s to 0.16s. The real-repo branch
(tsconfig.base.json options) is untouched.
---
 scripts/verify-export-jsdoc.ts | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/scripts/verify-export-jsdoc.ts b/scripts/verify-export-jsdoc.ts
index a2d8a82f97..3845d60f1b 100644
--- a/scripts/verify-export-jsdoc.ts
+++ b/scripts/verify-export-jsdoc.ts
@@ -510,15 +510,17 @@ function checkScope(statements: readonly ts.Statement[], prefix: string, w: Walk
  * Compiler options for the walk's program. The real repo hands over its
  * tsconfig.base.json (whose `paths` map resolves cross-package imports to
  * source, so heritage-member lookups see seam types); a fixture root without
- * one gets bare defaults — fixtures are single-file and self-contained.
- * Emit-side options are stripped: the walk never emits or asks for
- * diagnostics, it only binds types on demand.
+ * one gets `noLib` + no `@types` — fixtures are single-file and
+ * self-contained, nothing in the walk resolves a lib symbol, and default-lib
+ * parsing is ~99% of per-program cost (it made the fixture spec time out
+ * under CI coverage instrumentation). Emit-side options are stripped: the
+ * walk never emits or asks for diagnostics, it only binds types on demand.
  * @param scanRoot - the root being scanned.
  * @returns compiler options for ts.createProgram.
  */
 function loadCompilerOptions(scanRoot: string): ts.CompilerOptions {
   const cfgPath = resolve(scanRoot, 'tsconfig.base.json')
-  if (!existsSync(cfgPath)) return { skipLibCheck: true }
+  if (!existsSync(cfgPath)) return { skipLibCheck: true, noLib: true, types: [] }
   const cfg = ts.readConfigFile(cfgPath, ts.sys.readFile.bind(ts.sys)) as { config?: unknown }
   const parsed = ts.parseJsonConfigFileContent(cfg.config ?? {}, ts.sys, scanRoot)
   return {