diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..dfe0770
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,2 @@
+# Auto detect text files and perform LF normalization
+* text=auto
diff --git a/.github/workflows/npm-publish.yml b/.github/workflows/npm-publish.yml
new file mode 100644
index 0000000..5a6c5e4
--- /dev/null
+++ b/.github/workflows/npm-publish.yml
@@ -0,0 +1,34 @@
+# This workflow will run tests using node and then publish a package to GitHub Packages when a release is created
+# For more information see: https://help.github.com/actions/language-and-framework-guides/publishing-nodejs-packages
+
+name: Node.js Package
+
+on:
+  release:
+    types: [created]
+
+jobs:
+
+  publish-npm:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+          registry-url: https://registry.npmjs.org/
+      - run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.npm_token}}
+
+  publish-gpr:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-node@v1
+        with:
+          node-version: 12
+          registry-url: https://npm.pkg.github.com/
+      - run: npm publish
+        env:
+          NODE_AUTH_TOKEN: ${{secrets.git_token}}
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..6704566
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,104 @@
+# Logs
+logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Diagnostic reports (https://nodejs.org/api/report.html)
+report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+*.lcov
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# Bower dependency directory (https://bower.io/)
+bower_components
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (https://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# TypeScript v1 declaration files
+typings/
+
+# TypeScript cache
+*.tsbuildinfo
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Microbundle cache
+.rpt2_cache/
+.rts2_cache_cjs/
+.rts2_cache_es/
+.rts2_cache_umd/
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+# dotenv environment variables file
+.env
+.env.test
+
+# parcel-bundler cache (https://parceljs.org/)
+.cache
+
+# Next.js build output
+.next
+
+# Nuxt.js build / generate output
+.nuxt
+dist
+
+# Gatsby files
+.cache/
+# Comment in the public line in if your project uses Gatsby and *not* Next.js
+# https://nextjs.org/blog/next-9-1#public-directory-support
+# public
+
+# vuepress build output
+.vuepress/dist
+
+# Serverless directories
+.serverless/
+
+# FuseBox cache
+.fusebox/
+
+# DynamoDB Local files
+.dynamodb/
+
+# TernJS port file
+.tern-port
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..dafc078
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2021 chenkai0520
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..6f3e8c8
--- /dev/null
+++ b/README.md
@@ -0,0 +1,136 @@
+# Parameter
+Base on [parameter](https://www.npmjs.com/package/parameter)；
+
+Added tip parameter, which is used to prompt errors when parameter verification fails.
+
+# Install 
+```
+npm i @c_kai/parameter --save
+```
+
+# Usage
+
+`Parameter` Class
+
+- `constructor([options])` - new Class `Parameter` instance
+  - `options.convert` - 数据的类型进行转换,如 string:`'5'` => number `5`, default to `false`
+  - `strict` - 如果为`true` 如果数据中的key在对应rule中不存在会被删除，default to `false`
+- `validate(rule, value, opts)` - 校验 `value` 是否符合 `rule`. 如果不符合会返回错误数组
+- `addRule(type, check)` - 增加自定义规则
+   - `type` - 规则类型
+   - `check(rule, value, obj)` - 回调函数，返回的信息表示错误
+
+# Rule
+
+#### common rule
+
+- `required` - if `required` is set to false, this property can be null or undefined. default to `true`.
+- `type` - The type of property, every type has it's own rule for the validate.
+- `convertType` - Make parameter convert the input param to the specific type, support `int`, `number`, `string` and `boolean`, also support a function to customize your own convert method.
+- `default` - The default value of property, once the property is allowed non-required and missed, parameter will use this as the default value. **This may change the original input params**.
+
+#### int
+
+If type is `int`, there has tow addition rules:
+
+- `max` - The maximum of the value, `value` must <= `max`.
+- `min` - The minimum of the value, `value` must >= `min`.
+
+Default `convertType` is `int`.
+
+#### number
+
+If type is `number`, there has tow addition rules:
+
+- `max` - The maximum of the value, `value` must <= `max`.
+- `min` - The minimum of the value, `value` must >= `min`.
+
+Default `convertType` is `number`.
+
+#### string
+
+If type is `string`, there has four addition rules:
+
+- `allowEmpty`(alias to `empty`) - allow empty string, default to false. If `rule.required` set to false, `allowEmpty` will be set to `true` by default.
+- `format` - A `RegExp` to check string's format.
+- `max` - The maximum length of the string.
+- `min` - The minimum length of the string.
+- `trim` - Trim the string before check, default is `false`.
+
+Default `convertType` is `string`
+
+#### boolean
+
+Match `boolean` type value.
+
+Default `convertType` is `boolean`.
+
+#### enum
+
+If type is `enum`, it requires an addition rule:
+
+- `values` - An array of data, `value` must be one on them. ***this rule is required.***
+
+#### array
+
+If type is `array`, there has four addition rule:
+
+- `itemType` - The type of every item in this array.
+- `rule` - An object that validate the items of the array. Only work with `itemType`.
+- `max` - The maximun length of the array.
+- `min` - The minimun lenght of the array.
+
+
+# example
+```js
+
+let parameter = new Parameter({
+  convert: true,
+});
+
+parameter.addRule('even', (rule, value)=>{
+  if(value % 2 !== 0){
+    return '不是一个偶数';
+  }
+  return null;
+});
+
+var data = {
+  email: 'chenkai@mapplat.com',
+  name: 'xiao hong',
+  age: 24,
+  gender: 'male',
+  arr: ['1','2', '3'],
+  arr2: [1,2,3,9,10,4,19],
+  evenNum: 8,
+};
+var rule = {
+  email: /^[0-9a-zA-Z_.-]{2,20}@[0-9a-zA-Z_-]{1,20}(\.[a-zA-Z0-9_-]{2,8}){1,2}$/,
+  name: {
+    type: 'string',
+    min: 0,
+  },
+  age: {
+      type: 'int',
+      min: 0,
+      msg: '需要是一个大于0的整数',
+      convert: false,
+  },
+  gender: ['male', 'female', 'unknown'],
+  arr: {
+    type: 'array',
+    min: 0,
+    itemType: 'int',
+  },
+  evenNum: {
+    type: 'even',
+  }
+};
+
+let errors = parameter.validate(rule, data, {
+  strict: true,
+});
+
+```
+
+
diff --git a/changelog.md b/changelog.md
new file mode 100644
index 0000000..6fc9316
--- /dev/null
+++ b/changelog.md
@@ -0,0 +1,5 @@
+# 2.0.0
++ 精简了一些代码
++ 可以通过msg自定义返回错误
++ 增加了array的类型转换
+
diff --git a/examples/demo.js b/examples/demo.js
new file mode 100644
index 0000000..60acb05
--- /dev/null
+++ b/examples/demo.js
@@ -0,0 +1,53 @@
+let Parameter = require("./parameter");
+
+let parameter = new Parameter({
+  convert: true,
+});
+
+parameter.addRule('even', (rule, value)=>{
+  console.log(arguments)
+  if(value % 2 !== 0){
+    return '不是一个偶数';
+  }
+  return null;
+});
+
+let data = {
+  email: 'chenkai@mapplat.com',
+  name: 'xiao hong',
+  age: 24,
+  gender: 'male',
+  arr: ['1','2', '3'],
+  arr2: [1,2,3,9,10,4,19],
+  evenNum: 8,
+};
+
+let rule = {
+  email: /^[0-9a-zA-Z_.-]{2,20}@[0-9a-zA-Z_-]{1,20}(\.[a-zA-Z0-9_-]{2,8}){1,2}$/,
+  name: {
+    type: 'string',
+    min: 0,
+  },
+  age: {
+      type: 'int',
+      min: 0,
+      msg: '需要是一个大于0的整数',
+      convert: false,
+  },
+  gender: ['male', 'female', 'unknown'],
+  arr: {
+    type: 'array',
+    min: 0,
+    itemType: 'int',
+  },
+  evenNum: {
+    type: 'even',
+  }
+};
+
+let errors = parameter.validate(rule, data, {
+  strict: true,
+});
+
+console.log(JSON.stringify(errors));
+console.log(data);
\ No newline at end of file
diff --git a/index.js b/index.js
new file mode 100644
index 0000000..8262c86
--- /dev/null
+++ b/index.js
@@ -0,0 +1,278 @@
+/* eslint-disable class-methods-use-this  */
+/* eslint-disable no-restricted-syntax  */
+/* eslint-disable guard-for-in  */
+/* eslint-disable no-continue  */
+/* eslint-disable no-use-before-define  */
+
+function checkInt(rule, value) {
+  if (typeof value !== 'number' || value % 1 !== 0) {
+    return 'should be an integer';
+  }
+
+  if ('max' in rule && value > rule.max) {
+    return `should smaller than ${rule.max}`;
+  }
+
+  if ('min' in rule && value < rule.min) {
+    return `should bigger than ${rule.min}`;
+  }
+  return null;
+}
+
+function checkNumber(rule, value) {
+  if (typeof value !== 'number' || Number.isNaN(value)) {
+    return 'should be a number';
+  }
+  if ('max' in rule && value > rule.max) {
+    return `should smaller than ${rule.max}`;
+  }
+
+  if ('min' in rule && value < rule.min) {
+    return `should bigger than ${rule.min}`;
+  }
+  return null;
+}
+
+function checkString(rule, value) {
+  if (typeof value !== 'string') {
+    return 'should be a string';
+  }
+
+  if ('max' in rule && value.length > rule.max) {
+    return `length should smaller than ${rule.max}`;
+  }
+  if ('min' in rule && value.length < rule.min) {
+    return `length should bigger than ${rule.min}`;
+  }
+
+  if (rule.format && !rule.format.test(value)) {
+    return `should match ${rule.format}`;
+  }
+  return null;
+}
+
+function checkBoolean(rule, value) {
+  if (typeof value !== 'boolean') {
+    return 'should be a boolean';
+  }
+  return null;
+}
+
+function checkArray(rule, value, obj) {
+  if (!Array.isArray(value)) {
+    return 'should be an array';
+  }
+
+  if ('max' in rule && value.length > rule.max) {
+    return `length should smaller than ${rule.max}`;
+  }
+  if ('min' in rule && value.length < rule.min) {
+    return `length should bigger than ${rule.min}`;
+  }
+
+  if (!rule.itemType) return null;
+  const checker = rule.itemChecker || TYPE_MAP[rule.itemType];
+  if (!checker) {
+    throw new TypeError(`rule type must be one of  ${Object.keys(TYPE_MAP).join(', ')}, but the following type was passed: ${rule.type}`);
+  }
+  const errors = [];
+  const subRule = this.formatRule(rule.rule);
+  value.forEach((v, i) => {
+    const index = `[${i}]`;
+    const msg = checker.call(this, subRule, value[i], obj);
+    if (msg) {
+      errors.push({
+        message: rule.msg || msg,
+        code: 'invalid',
+        field: `key:${index}`,
+      });
+    }
+  });
+
+  if (errors.length) {
+    return errors;
+  }
+  return null;
+}
+
+function checkEnum(rule, value) {
+  if (!Array.isArray(rule.values)) {
+    throw new Error('check enum need array type values');
+  }
+  if (rule.values.indexOf(value) === -1) {
+    return `should be one of ${rule.values.join(', ')}`;
+  }
+  return null;
+}
+
+function checkCustom(rule, value) {
+  const { custom } = rule;
+  if (typeof custom !== 'function') {
+    throw new Error('custom need function type values');
+  }
+  return custom(rule, value);
+}
+
+const TYPE_MAP = {
+  number: checkNumber,
+  int: checkInt,
+  string: checkString,
+  boolean: checkBoolean,
+  array: checkArray,
+  enum: checkEnum,
+  custom: checkCustom,
+};
+
+const CONVERT_MAP = {
+  number: 'number',
+  int: 'int',
+  string: 'string',
+  boolean: 'boolean',
+  array: 'string',
+  enum: 'string',
+  custom: 'string',
+};
+
+class Parameter {
+  constructor(opts = {}) {
+    this.opts = opts;
+
+    this.convert = this.opts.convert || false;
+    this.strict = this.opts.strict || false;
+  }
+
+  validate(rules, obj, opts = {}) {
+    if (typeof rules !== 'object') {
+      throw new TypeError('need object type rule');
+    }
+    if (typeof obj !== 'object') {
+      throw new TypeError('need object type data');
+    }
+
+    // 严格模式下如果数据中不存在rules中会被过滤掉
+    const isStrict = 'strict' in opts ? opts.strict : this.strict;
+    if (isStrict) {
+      for (const key in obj) {
+        if (key in rules) continue;
+        delete obj[key];
+      }
+    }
+
+    const errors = [];
+
+    for (const key in rules) {
+      const rule = this.formatRule(rules[key]);
+      let value = obj[key];
+
+      if (typeof value === 'string' && rule.trim === true) {
+        obj[key] = value.trim();
+        value = obj[key];
+      }
+
+      // 检查是否可选，设置默认值
+      const isExist = value !== null && value !== undefined;
+      if (!isExist) {
+        if (rule.required !== false) {
+          errors.push({
+            message: 'required',
+            field: key,
+            code: 'missing_field',
+          });
+        }
+        // support default value
+        if ('default' in rule) {
+          obj[key] = rule.default;
+        }
+        continue;
+      }
+
+      // convert
+      const isConvert = 'convert' in rule ? rule.convert : this.convert;
+      if (isConvert) {
+        this.convertValue(rule, obj, key);
+      }
+
+      // 检查参数是否合法
+      const checker = rule.checker || TYPE_MAP[rule.type];
+      if (!checker) {
+        throw new TypeError(`rule type must be one of  ${Object.keys(TYPE_MAP).join(', ')}, but the following type was passed: ${rule.type}`);
+      }
+      const msg = checker.call(this, rule, obj[key], obj);
+      if (msg) {
+        errors.push({
+          message: rule.msg || msg,
+          code: 'invalid',
+          field: key,
+        });
+      }
+    }
+
+    if (errors.length) {
+      return errors;
+    }
+    return null;
+  }
+
+  addRule(type, check) {
+    TYPE_MAP[type] = check;
+  }
+
+  formatRule(rule) {
+    rule = rule || {};
+    if (typeof rule === 'string') {
+      rule = { type: rule };
+    } else if (Array.isArray(rule)) {
+      rule = { type: 'enum', values: rule };
+    } else if (rule instanceof RegExp) {
+      rule = { type: 'string', format: rule };
+    }
+    return rule;
+  }
+
+  convertValue(rule, obj, key) {
+    const value = obj[key];
+
+    // 数组
+    if (Array.isArray(value)) {
+      const itemType = rule.itemType;
+      if (typeof itemType === 'function') {
+        obj[key] = value.map((val) => itemType(val, obj));
+        return;
+      }
+      switch (itemType) {
+        case 'int':
+        case 'number':
+          obj[key] = value.map((val) => Number(val));
+          break;
+        case 'string':
+          obj[key] = value.map((val) => `${val}`);
+          break;
+        default:
+      }
+      return;
+    }
+  
+    const convertType = rule.convertType || CONVERT_MAP[rule.type];
+    if (typeof convertType === 'function') {
+      obj[key] = convertType(value, obj);
+      return;
+    }
+    switch (convertType) {
+      case 'int':
+        obj[key] = parseInt(value, 10);
+        break;
+      case 'string':
+        obj[key] = String(value);
+        break;
+      case 'number':
+        obj[key] = Number(obj[key]);
+        break;
+      case 'boolean':
+        obj[key] = !!value;
+        break;
+      default:
+    }
+  }
+}
+
+module.exports = Parameter;
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..dbabc48
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,911 @@
+{
+  "name": "@c_kai/parameter",
+  "version": "1.0.4",
+  "lockfileVersion": 1,
+  "requires": true,
+  "dependencies": {
+    "ansi-colors": {
+      "version": "3.2.3",
+      "resolved": "https://registry.npm.taobao.org/ansi-colors/download/ansi-colors-3.2.3.tgz",
+      "integrity": "sha1-V9NbhoboUeLMBMQD8cACA5dqGBM=",
+      "dev": true
+    },
+    "ansi-regex": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npm.taobao.org/ansi-regex/download/ansi-regex-3.0.0.tgz",
+      "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+      "dev": true
+    },
+    "ansi-styles": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npm.taobao.org/ansi-styles/download/ansi-styles-3.2.1.tgz",
+      "integrity": "sha1-QfuyAkPlCxK+DwS43tvwdSDOhB0=",
+      "dev": true,
+      "requires": {
+        "color-convert": "^1.9.0"
+      }
+    },
+    "anymatch": {
+      "version": "3.1.1",
+      "resolved": "https://registry.npm.taobao.org/anymatch/download/anymatch-3.1.1.tgz",
+      "integrity": "sha1-xV7PAhheJGklk5kxDBc84xIzsUI=",
+      "dev": true,
+      "requires": {
+        "normalize-path": "^3.0.0",
+        "picomatch": "^2.0.4"
+      }
+    },
+    "argparse": {
+      "version": "1.0.10",
+      "resolved": "https://registry.npm.taobao.org/argparse/download/argparse-1.0.10.tgz",
+      "integrity": "sha1-vNZ5HqWuCXJeF+WtmIE0zUCz2RE=",
+      "dev": true,
+      "requires": {
+        "sprintf-js": "~1.0.2"
+      }
+    },
+    "balanced-match": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npm.taobao.org/balanced-match/download/balanced-match-1.0.0.tgz",
+      "integrity": "sha1-ibTRmasr7kneFk6gK4nORi1xt2c=",
+      "dev": true
+    },
+    "binary-extensions": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npm.taobao.org/binary-extensions/download/binary-extensions-2.0.0.tgz",
+      "integrity": "sha1-I8DfFPaogHf1+YbA0WfsA8PVU3w=",
+      "dev": true
+    },
+    "brace-expansion": {
+      "version": "1.1.11",
+      "resolved": "https://registry.npm.taobao.org/brace-expansion/download/brace-expansion-1.1.11.tgz",
+      "integrity": "sha1-PH/L9SnYcibz0vUrlm/1Jx60Qd0=",
+      "dev": true,
+      "requires": {
+        "balanced-match": "^1.0.0",
+        "concat-map": "0.0.1"
+      }
+    },
+    "braces": {
+      "version": "3.0.2",
+      "resolved": "https://registry.npm.taobao.org/braces/download/braces-3.0.2.tgz",
+      "integrity": "sha1-NFThpGLujVmeI23zNs2epPiv4Qc=",
+      "dev": true,
+      "requires": {
+        "fill-range": "^7.0.1"
+      }
+    },
+    "browser-stdout": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npm.taobao.org/browser-stdout/download/browser-stdout-1.3.1.tgz",
+      "integrity": "sha1-uqVZ7hTO1zRSIputcyZGfGH6vWA=",
+      "dev": true
+    },
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+      "resolved": "https://registry.npm.taobao.org/p-limit/download/p-limit-2.2.2.tgz?cache=0&sync_timestamp=1577904187480&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fp-limit%2Fdownload%2Fp-limit-2.2.2.tgz",
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+      "resolved": "https://registry.npm.taobao.org/readdirp/download/readdirp-3.2.0.tgz?cache=0&sync_timestamp=1575629920252&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Freaddirp%2Fdownload%2Freaddirp-3.2.0.tgz",
+      "integrity": "sha1-wwwzNSsSyW37S4lUIaSf1alZODk=",
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+      "requires": {
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+    "require-directory": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npm.taobao.org/require-directory/download/require-directory-2.1.1.tgz",
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+    },
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+      "version": "2.0.0",
+      "resolved": "https://registry.npm.taobao.org/require-main-filename/download/require-main-filename-2.0.0.tgz",
+      "integrity": "sha1-0LMp7MfMD2Fkn2IhW+aa9UqomJs=",
+      "dev": true
+    },
+    "semver": {
+      "version": "5.7.1",
+      "resolved": "https://registry.npm.taobao.org/semver/download/semver-5.7.1.tgz",
+      "integrity": "sha1-qVT5Ma66UI0we78Gnv8MAclhFvc=",
+      "dev": true
+    },
+    "set-blocking": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npm.taobao.org/set-blocking/download/set-blocking-2.0.0.tgz",
+      "integrity": "sha1-BF+XgtARrppoA93TgrJDkrPYkPc=",
+      "dev": true
+    },
+    "sprintf-js": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npm.taobao.org/sprintf-js/download/sprintf-js-1.0.3.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fsprintf-js%2Fdownload%2Fsprintf-js-1.0.3.tgz",
+      "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=",
+      "dev": true
+    },
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+      "integrity": "sha1-q5Pyeo3BPSjKyBXEYhQ6bZASrp4=",
+      "dev": true,
+      "requires": {
+        "is-fullwidth-code-point": "^2.0.0",
+        "strip-ansi": "^4.0.0"
+      }
+    },
+    "string.prototype.trimleft": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npm.taobao.org/string.prototype.trimleft/download/string.prototype.trimleft-2.1.1.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fstring.prototype.trimleft%2Fdownload%2Fstring.prototype.trimleft-2.1.1.tgz",
+      "integrity": "sha1-m9uKxqvW1gKxek7TIYcNL43O/HQ=",
+      "dev": true,
+      "requires": {
+        "define-properties": "^1.1.3",
+        "function-bind": "^1.1.1"
+      }
+    },
+    "string.prototype.trimright": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npm.taobao.org/string.prototype.trimright/download/string.prototype.trimright-2.1.1.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fstring.prototype.trimright%2Fdownload%2Fstring.prototype.trimright-2.1.1.tgz",
+      "integrity": "sha1-RAMUsVmWyGbOigNBiU1FGGIAxdk=",
+      "dev": true,
+      "requires": {
+        "define-properties": "^1.1.3",
+        "function-bind": "^1.1.1"
+      }
+    },
+    "strip-ansi": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npm.taobao.org/strip-ansi/download/strip-ansi-4.0.0.tgz?cache=0&sync_timestamp=1573280577145&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fstrip-ansi%2Fdownload%2Fstrip-ansi-4.0.0.tgz",
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+      "dev": true,
+      "requires": {
+        "ansi-regex": "^3.0.0"
+      }
+    },
+    "strip-json-comments": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npm.taobao.org/strip-json-comments/download/strip-json-comments-2.0.1.tgz",
+      "integrity": "sha1-PFMZQukIwml8DsNEhYwobHygpgo=",
+      "dev": true
+    },
+    "supports-color": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npm.taobao.org/supports-color/download/supports-color-6.0.0.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fsupports-color%2Fdownload%2Fsupports-color-6.0.0.tgz",
+      "integrity": "sha1-ds/nQs8fQbubHCmtAwaMBbTA5Ao=",
+      "dev": true,
+      "requires": {
+        "has-flag": "^3.0.0"
+      }
+    },
+    "to-regex-range": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npm.taobao.org/to-regex-range/download/to-regex-range-5.0.1.tgz",
+      "integrity": "sha1-FkjESq58jZiKMmAY7XL1tN0DkuQ=",
+      "dev": true,
+      "requires": {
+        "is-number": "^7.0.0"
+      }
+    },
+    "which": {
+      "version": "1.3.1",
+      "resolved": "https://registry.npm.taobao.org/which/download/which-1.3.1.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fwhich%2Fdownload%2Fwhich-1.3.1.tgz",
+      "integrity": "sha1-pFBD1U9YBTFtqNYvn1CRjT2nCwo=",
+      "dev": true,
+      "requires": {
+        "isexe": "^2.0.0"
+      }
+    },
+    "which-module": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npm.taobao.org/which-module/download/which-module-2.0.0.tgz",
+      "integrity": "sha1-2e8H3Od7mQK4o6j6SzHD4/fm6Ho=",
+      "dev": true
+    },
+    "wide-align": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npm.taobao.org/wide-align/download/wide-align-1.1.3.tgz",
+      "integrity": "sha1-rgdOa9wMFKQx6ATmJFScYzsABFc=",
+      "dev": true,
+      "requires": {
+        "string-width": "^1.0.2 || 2"
+      }
+    },
+    "wrap-ansi": {
+      "version": "5.1.0",
+      "resolved": "https://registry.npm.taobao.org/wrap-ansi/download/wrap-ansi-5.1.0.tgz?cache=0&sync_timestamp=1573488536792&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fwrap-ansi%2Fdownload%2Fwrap-ansi-5.1.0.tgz",
+      "integrity": "sha1-H9H2cjXVttD+54EFYAG/tpTAOwk=",
+      "dev": true,
+      "requires": {
+        "ansi-styles": "^3.2.0",
+        "string-width": "^3.0.0",
+        "strip-ansi": "^5.0.0"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npm.taobao.org/ansi-regex/download/ansi-regex-4.1.0.tgz",
+          "integrity": "sha1-i5+PCM8ay4Q3Vqg5yox+MWjFGZc=",
+          "dev": true
+        },
+        "string-width": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npm.taobao.org/string-width/download/string-width-3.1.0.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fstring-width%2Fdownload%2Fstring-width-3.1.0.tgz",
+          "integrity": "sha1-InZ74htirxCBV0MG9prFG2IgOWE=",
+          "dev": true,
+          "requires": {
+            "emoji-regex": "^7.0.1",
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^5.1.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npm.taobao.org/strip-ansi/download/strip-ansi-5.2.0.tgz?cache=0&sync_timestamp=1573280577145&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fstrip-ansi%2Fdownload%2Fstrip-ansi-5.2.0.tgz",
+          "integrity": "sha1-jJpTb+tq/JYr36WxBKUJHBrZwK4=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^4.1.0"
+          }
+        }
+      }
+    },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npm.taobao.org/wrappy/download/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
+      "dev": true
+    },
+    "y18n": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npm.taobao.org/y18n/download/y18n-4.0.0.tgz",
+      "integrity": "sha1-le+U+F7MgdAHwmThkKEg8KPIVms=",
+      "dev": true
+    },
+    "yargs": {
+      "version": "13.3.0",
+      "resolved": "https://registry.npm.taobao.org/yargs/download/yargs-13.3.0.tgz?cache=0&sync_timestamp=1577940861093&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fyargs%2Fdownload%2Fyargs-13.3.0.tgz",
+      "integrity": "sha1-TGV6VeB+Xyz5R/ijZlZ8BKDe3IM=",
+      "dev": true,
+      "requires": {
+        "cliui": "^5.0.0",
+        "find-up": "^3.0.0",
+        "get-caller-file": "^2.0.1",
+        "require-directory": "^2.1.1",
+        "require-main-filename": "^2.0.0",
+        "set-blocking": "^2.0.0",
+        "string-width": "^3.0.0",
+        "which-module": "^2.0.0",
+        "y18n": "^4.0.0",
+        "yargs-parser": "^13.1.1"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "4.1.0",
+          "resolved": "https://registry.npm.taobao.org/ansi-regex/download/ansi-regex-4.1.0.tgz",
+          "integrity": "sha1-i5+PCM8ay4Q3Vqg5yox+MWjFGZc=",
+          "dev": true
+        },
+        "string-width": {
+          "version": "3.1.0",
+          "resolved": "https://registry.npm.taobao.org/string-width/download/string-width-3.1.0.tgz?cache=0&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fstring-width%2Fdownload%2Fstring-width-3.1.0.tgz",
+          "integrity": "sha1-InZ74htirxCBV0MG9prFG2IgOWE=",
+          "dev": true,
+          "requires": {
+            "emoji-regex": "^7.0.1",
+            "is-fullwidth-code-point": "^2.0.0",
+            "strip-ansi": "^5.1.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "5.2.0",
+          "resolved": "https://registry.npm.taobao.org/strip-ansi/download/strip-ansi-5.2.0.tgz?cache=0&sync_timestamp=1573280577145&other_urls=https%3A%2F%2Fregistry.npm.taobao.org%2Fstrip-ansi%2Fdownload%2Fstrip-ansi-5.2.0.tgz",
+          "integrity": "sha1-jJpTb+tq/JYr36WxBKUJHBrZwK4=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^4.1.0"
+          }
+        }
+      }
+    },
+    "yargs-parser": {
+      "version": "13.1.1",
+      "resolved": "https://registry.npm.taobao.org/yargs-parser/download/yargs-parser-13.1.1.tgz",
+      "integrity": "sha1-0mBYUyqgbTZf4JH2ofwGsvfl7KA=",
+      "dev": true,
+      "requires": {
+        "camelcase": "^5.0.0",
+        "decamelize": "^1.2.0"
+      }
+    },
+    "yargs-unparser": {
+      "version": "1.6.0",
+      "resolved": "https://registry.npm.taobao.org/yargs-unparser/download/yargs-unparser-1.6.0.tgz",
+      "integrity": "sha1-7yXCx2n/a9CeSw+dfGBfsnhG6p8=",
+      "dev": true,
+      "requires": {
+        "flat": "^4.1.0",
+        "lodash": "^4.17.15",
+        "yargs": "^13.3.0"
+      }
+    }
+  }
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..27cf3de
--- /dev/null
+++ b/package.json
@@ -0,0 +1,20 @@
+{
+  "name": "@ckpack/parameter",
+  "version": "2.0.0",
+  "description": "用于参数验证",
+  "main": "index.js",
+  "scripts": {
+    "test": "mocha"
+  },
+  "keywords": [
+    "parameter",
+    "verify"
+  ],
+  "author": "chenkai",
+  "license": "ISC",
+  "dependencies": {},
+  "repository": "https://github.com/ckpack/parameter",
+  "devDependencies": {
+    "mocha": "^7.0.0"
+  }
+}
diff --git a/test/parameter.js b/test/parameter.js
new file mode 100644
index 0000000..24e86f1
--- /dev/null
+++ b/test/parameter.js
@@ -0,0 +1,49 @@
+let assert = require('assert');
+let Parameter = require('../index');
+
+let parameter = new Parameter();
+
+describe('parameter', function () {
+    it('验证通过', function () {
+
+        var data = {
+            name: 'foo',
+            age: 24,
+            gender: 'male'
+        };
+        var rule = {
+            name: 'string',
+            age: {
+                type: 'int',
+                min: 1,
+                msg: '需要是一个大于1的整数',
+                convertType: 'int'
+            },
+            gender: ['male', 'female', 'unknown']
+        };
+
+        let errors = parameter.validate(rule, data);
+        assert.equal(errors, null)
+    });
+    it('验证msg提示', function () {
+
+        var data = {
+            name: 'foo',
+            age: -24,
+            gender: 'male'
+        };
+        var rule = {
+            name: 'string',
+            age: {
+                type: 'int',
+                min: 1,
+                msg: '需要是一个大于1的整数',
+                convertType: 'int'
+            },
+            gender: ['male', 'female', 'unknown']
+        };
+
+        let errors = parameter.validate(rule, data);
+        assert.equal(errors[0].message, '需要是一个大于1的整数')
+    });
+});
\ No newline at end of file