chore: update log supports

scripts/updatelog.mjs

@@ -0,0 +1,44 @@
+import fs from "fs-extra";
+import path from "path";
+
+const UPDATE_LOG = "UPDATELOG.md";
+
+// parse the UPDATELOG.md
+export async function resolveUpdateLog(tag) {
+  const cwd = process.cwd();
+
+  const reTitle = /^## v[\d\.]+/;
+  const reEnd = /^---/;
+
+  const file = path.join(cwd, UPDATE_LOG);
+
+  if (!(await fs.pathExists(file))) {
+    throw new Error("could not found UPDATELOG.md");
+  }
+
+  const data = await fs.readFile(file).then((d) => d.toString("utf8"));
+
+  const map = {};
+  let p = "";
+
+  data.split("\n").forEach((line) => {
+    if (reTitle.test(line)) {
+      p = line.slice(3).trim();
+      if (!map[p]) {
+        map[p] = [];
+      } else {
+        throw new Error(`Tag ${p} dup`);
+      }
+    } else if (reEnd.test(line)) {
+      p = "";
+    } else if (p) {
+      map[p].push(line);
+    }
+  });
+
+  if (!map[tag]) {
+    throw new Error(`could not found "${tag}" in UPDATELOG.md`);
+  }
+
+  return map[tag].join("\n").trim();
+}