ci: 使用 Deno 的测试 (PR 预览) 在 esm.sh 上卡住 18 分钟,然后以 408 请求超时的错误终止

1. curl -s -f -I sends HEAD requests: In .GitHub/workflows/TypeScript-pr-preview.yml:123:

if curl -s -f -I "$PR_URL" > /dev/null 2>&1; then

The -I flag issues an HTTP HEAD request. esm.sh does not trigger background compilation on HEAD requests, so the polling loop loops for 5 minutes without ever starting the build worker.