diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..d7e9ceb
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,8 @@
+# 以'#'开始的行，被视为注释.                                                                                                                          
+node_modules
+package-lock.json
+.vscode
+.svn
+~*
+.gitattributes
+dump.rdb
diff --git a/.prettierrc.js b/.prettierrc.js
new file mode 100644
index 0000000..e001ecd
--- /dev/null
+++ b/.prettierrc.js
@@ -0,0 +1,16 @@
+/* 
+对 VSCode Prettier 有效；建议一直要有本配置文件，否则不同版本的 Prettier 的默认配置会不同，例如 TrailingComma
+对 VSCode Prettier Standard 无效，似乎是集成了不能修改的配置。
+*/
+module.exports = {
+  printWidth: 160, // default 80
+  tabWidth: 2, // default 2
+  useTabs: false,
+  semi: false, // default true
+  singleQuote: true, // default false
+  trailingComma: 'es5', // none (default in v 1.*), es5 (default in v2.0.0), all
+  bracketSpacing: true, // default true
+  jsxBracketSameLine: false, // default false
+  arrowParens: 'always', // avoid (default in v1.9.0), always (default since v2.0.0)
+  quoteProps: 'as-needed', // as-needed (default), consistent, preserve
+}
diff --git a/README.md b/README.md
index 97ec0a3..0933520 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,2 @@
-# sol.util
+# sol.tool
 
diff --git a/index.js b/index.js
new file mode 100644
index 0000000..083a840
--- /dev/null
+++ b/index.js
@@ -0,0 +1,25 @@
+/* 基础小工具，可通用于服务端和用户端
+ */
+
+module.exports = {
+  sleep: (ms) => new Promise((resolve, reject) => setTimeout(resolve, ms)),
+  parseJsonPossible(value) {
+    try {
+      return JSON.parse(value)
+    } catch (e) {
+      return value
+    }
+  },
+  sortAndFilterJson({ fields, entity, exclude = [] } = {}) {
+    const newEntity = {}
+    for (let key of Object.keys(fields).sort()) {
+      if (typeof (entity[key] !== 'undefined') && !Number.isNaN(entity[key]) && entity[key] !== Infinity) {
+        newEntity[key] = entity[key]
+      }
+    }
+    for (let exkey of exclude) {
+      delete newEntity[exkey]
+    }
+    return JSON.stringify(newEntity)
+  },
+}
\ No newline at end of file
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..4f16640
--- /dev/null
+++ b/package.json
@@ -0,0 +1,13 @@
+{
+  "name": "sol.tool",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+  },
+  "devDependencies": {
+  },
+  "scripts": {
+    "setup": "npm install"
+  },
+  "author": ""
+}