fix: copy pid utils from lib

src/app.ts

@@ -1,4 +1,4 @@
-import { removePid, signal, SIGNAL_RELOAD, SIGNAL_RESET, SIGNAL_STOP, writePid } from '@apextoaster/js-utils';
+import { signal, SIGNAL_RELOAD, SIGNAL_RESET, SIGNAL_STOP } from '@apextoaster/js-utils';
 import { BaseOptions, Container, Logger } from 'noicejs';
 import yargs from 'yargs-parser';
 
@@ -10,6 +10,7 @@ import { BotModule } from './module/BotModule';
 import { ServiceModule } from './module/ServiceModule';
 import { Schema } from './schema';
 import { ServiceEvent } from './Service';
+import { removePid, writePid } from './utils/PidFile';
 import { VERSION_INFO } from './version';
 
 export interface CreateOptions {

src/utils/PidFile.ts

@@ -0,0 +1,43 @@
+import { doesExist, Optional } from '@apextoaster/js-utils';
+import { open, unlink, write } from 'fs';
+import { pid } from 'process';
+
+type OptionalErrno = Optional<NodeJS.ErrnoException>;
+
+/**
+ * Write the current process ID to a file at the given `path`.
+ *
+ * @public
+ */
+export async function writePid(path: string): Promise<void> {
+  return new Promise((res, rej) => {
+    open(path, 'wx', (openErr: OptionalErrno, fd: number) => {
+      if (doesExist(openErr)) {
+        rej(openErr);
+      } else {
+        write(fd, pid.toString(), 0, 'utf8', (writeErr: OptionalErrno) => {
+          if (doesExist(writeErr)) {
+            rej(writeErr);
+          } else {
+            res();
+          }
+        });
+      }
+    });
+  });
+}
+
+/**
+ * Remove the file at the given `path`.
+ */
+export async function removePid(path: string): Promise<void> {
+  return new Promise((res, rej) => {
+    unlink(path, (err: OptionalErrno) => {
+      if (doesExist(err)) {
+        rej(err);
+      } else {
+        res();
+      }
+    });
+  });
+}