ci: Add postcss test script

.github/workflows/postCommit.yaml

@@ -164,6 +164,8 @@ jobs:
         run: npx stylelint --cache --cache-strategy content --cache-location ".cache/"  --formatter github --max-warnings 0 "src/**/*.css"
       - name: Run v8r
         run: npx v8r
+      - name: Run postcss test
+        run: node scripts/postcss/index.js
       - name: Check .mailmap
         if: needs.postCommit.result == 'success'
         run: node scripts/emailmapChecker/index.js

scripts/postcss/index.js

@@ -0,0 +1,61 @@
+import { exec } from "node:child_process";
+import { warning, startGroup, endGroup } from "@actions/core";
+import console from "../modules/console.js";
+
+console.info("Start to run postcss...");
+startGroup("postcss output:");
+/**
+ * @type { string }
+ */
+const output = await new Promise((res, rej) => {
+    const childProcess = exec("npx postcss src/**/*.css --base src/ -d dist/ --verbose", (err, _, stderr) => {
+        if (err) {
+            rej(err);
+        } else {
+            res(stderr);
+        }
+    });
+    childProcess.stdout?.pipe(process.stdout);
+    childProcess.stderr?.pipe(process.stderr);
+});
+endGroup();
+
+/**
+ * @type { [string, import("@actions/core").AnnotationProperties][] }
+ */
+const annotations = [];
+/**
+ * @type { string }
+ */
+let lastFileName;
+for (const line of output.split("\n")) {
+    if (line.startsWith("Finished")) {
+        const match = line.match(/Finished (.*?) in/)?.[1];
+        if (match) {
+            lastFileName = match;
+        }
+    }
+    if (line.includes("⚠")) {
+        /**
+         * @type { import("@actions/core").AnnotationProperties }
+         */
+        const annotationProperties = {
+            title: "PostCSS Annotation",
+            file: lastFileName,
+            startLine: +line.match(/^(\d+):(\d+)/)?.[1],
+            startColumn: +line.match(/^(\d+):(\d+)/)?.[2],
+        };
+        const fileLink = `https://github.com/${process.env.GITHUB_REPOSITORY}/blob/${process.env.GITHUB_SHA.slice(0, 7)}/${encodeURI(`${lastFileName}#L${annotationProperties.startLine}`)}`;
+        const msg = `${line.replace(/^.*?⚠\s*/, "")} @ ${fileLink}`;
+        annotations.push([msg, annotationProperties]);
+    }
+}
+
+if (annotations.length > 0) {
+    console.warn("PostCSS has some warnings:");
+    for (const [msg, annotationProperties] of annotations) {
+        warning(msg, annotationProperties);
+    }
+} else {
+    console.info("PostCSS has no warnings.");
+}