diff --git a/.gitignore b/.gitignore
index e5cfa53..fd5db51 100644
--- a/.gitignore
+++ b/.gitignore
@@ -6,3 +6,4 @@ sample-dist
 benchmark-dist
 yarn.lock
 node_modules
+coverage.lcov
diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..f51f692
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,10 @@
+language:
+  node_js
+node_js:
+  - "10"
+install:
+  - npm install
+script:
+  - npm run lint
+  - npm run test
+  - npm run report-coverage
diff --git a/README.md b/README.md
index 9d6c248..07b3705 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,7 @@
 ## 使用高阶函数开发语法分析器
 
+[![travis-ci](https://api.travis-ci.org/muzea/parser.svg?branch=master)](https://travis-ci.org/muzea/parser) [![codecov](https://img.shields.io/codecov/c/github/muzea/parser/master.svg)](https://codecov.io/gh/muzea/parser)
+
 程序是[轮子哥博客](http://www.cppblog.com/vczh/archive/2008/05/21/50656.html)的js复刻版。
 
 做了一些修改方便理解。~~其实是我看不懂轮子脚本的语法了~~
diff --git a/package.json b/package.json
index e5069f7..18ba925 100644
--- a/package.json
+++ b/package.json
@@ -12,7 +12,8 @@
     "test": "nyc ava --color",
     "lint": "yarn tslint -p . && yarn eslint sample/*.js && yarn tslint sample/*.ts",
     "benchmark": "node ./benchmark-dist/json.js",
-    "benchmark:build": "parcel build benchmark/* -d benchmark-dist --target node"
+    "benchmark:build": "parcel build benchmark/* -d benchmark-dist --target node",
+    "report-coverage": "nyc ava --color && nyc report --reporter=text-lcov > coverage.lcov && codecov"
   },
   "nyc": {
     "include": [
@@ -26,6 +27,7 @@
   "devDependencies": {
     "ava": "1.2",
     "benchmark": "^2.1.4",
+    "codecov": "^3.2.0",
     "eslint": "^5.9.0",
     "eslint-plugin-prettier": "^3.0.0",
     "microtime": "^2.1.8",
diff --git a/sample/json.ts b/sample/json.ts
index 32abea5..2089932 100644
--- a/sample/json.ts
+++ b/sample/json.ts
@@ -449,8 +449,8 @@ function hexToValue(obj: Item): string {
 
 const codeMap = {
   '"': '\"',
-  '\\': '\\',
   '/': '\/',
+  '\\': '\\',
   'b': '\b',
   'n': '\n',
   'r': '\r',