From e1912314e564c0fa5b2e8f9e1e262ed80df96ba9 Mon Sep 17 00:00:00 2001
From: luohuidong <luohuidong01@126.com>
Date: Sun, 21 Aug 2022 20:12:33 +0800
Subject: [PATCH 1/2] complete exercise2

---
 lib/add.js | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/lib/add.js b/lib/add.js
index 1714b95..1b97713 100644
--- a/lib/add.js
+++ b/lib/add.js
@@ -1,5 +1,11 @@
-function add() {
-  // 实现该函数
+function add(num1, num2) {
+  const tmp1 = Number(num1);
+  const tmp2 = Number(num2);
+  if (Number.isSafeInteger(tmp1) && Number.isSafeInteger(tmp2)) {
+    return (tmp1 + tmp2).toString();
+  } else {
+    return (BigInt(num1) + BigInt(num2)).toString();
+  }
 }
 
-module.exports = add
\ No newline at end of file
+module.exports = add;

From 2c21d105dd239b1a40fdf35fa8cefbb52f5b8c7d Mon Sep 17 00:00:00 2001
From: luohuidong <luohuidong01@126.com>
Date: Sun, 21 Aug 2022 21:05:02 +0800
Subject: [PATCH 2/2] add github actions file

---
 .github/workflows/node.js.yml | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 .github/workflows/node.js.yml

diff --git a/.github/workflows/node.js.yml b/.github/workflows/node.js.yml
new file mode 100644
index 0000000..3a2d08b
--- /dev/null
+++ b/.github/workflows/node.js.yml
@@ -0,0 +1,29 @@
+# This workflow will do a clean installation of node dependencies, cache/restore them, build the source code and run tests across different versions of node
+# For more information see: https://help.github.com/actions/language-and-framework-guides/using-nodejs-with-github-actions
+
+name: Node.js CI
+
+on:
+  push:
+    branches: ["master"]
+  pull_request:
+    branches: ["master"]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [16.x]
+        # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
+
+    steps:
+      - uses: actions/checkout@v3
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+          cache: "npm"
+      - run: npm install
+      - run: npm run test