feat: migrate to GramJS with TS

tests/keywords.spec.ts

@@ -0,0 +1,58 @@
+import { mkdtempSync, rmSync, writeFileSync } from "node:fs";
+import { tmpdir } from "node:os";
+import { join } from "node:path";
+
+import { afterAll, beforeAll, describe, expect, it } from "vitest";
+
+import { KeywordStore } from "../src/keywords.js";
+
+describe("KeywordStore", () => {
+  const tempDir = mkdtempSync(join(tmpdir(), "keywords-test-"));
+  const keywordsFile = join(tempDir, "keywords.yaml");
+
+  beforeAll(() => {
+    writeFileSync(
+      keywordsFile,
+      [
+        "keywords:",
+        "  - name: promo",
+        "    patterns:",
+        '      - "推广"',
+        "    regex: false",
+        "  - name: regex",
+        "    patterns:",
+        '      - "(?i)验证码"',
+        "    regex: true",
+      ].join("\n"),
+      "utf-8",
+    );
+  });
+
+  afterAll(() => {
+    rmSync(tempDir, { recursive: true, force: true });
+  });
+
+  it("匹配子串与正则，并在文件更新后热加载", async () => {
+    const store = new KeywordStore(keywordsFile);
+    const firstHits = store.match("这是一个推广内容");
+    expect(firstHits.some((hit) => hit.keyword === "promo")).toBe(true);
+
+    const regexHits = store.match("验证码123");
+    expect(regexHits.some((hit) => hit.keyword === "regex")).toBe(true);
+
+    await new Promise((resolve) => setTimeout(resolve, 20));
+    writeFileSync(
+      keywordsFile,
+      [
+        "keywords:",
+        "  - name: new",
+        "    patterns:",
+        '      - "新品"',
+      ].join("\n"),
+      "utf-8",
+    );
+
+    const updated = store.match("这是一条新品");
+    expect(updated.some((hit) => hit.keyword === "new")).toBe(true);
+  });
+});