init

index.js

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+/*
+var colors = require('colors') // require后，字符串被添加了一系列方法： str.white, str.inverse, ...
+// colors.styles: bold,italic,underline,inverse,yellow,cyan,white,magenta,green,red,grey,blue,rainbow,zebra,random
+// 自定义的 themes：
+colors.setTheme({
+  logprompt: 'inverse',
+  logok:'green',
+  logerror: 'red',
+  logwarn: 'magenta',
+  logtitle: 'cyan'
+})
+*/
+
+const bunyan = require('bunyan')
+const PrettyStream = require('bunyan-pretty-colors')
+const path = require('path')
+
+var prettyStdOut = new PrettyStream()
+prettyStdOut.pipe(process.stdout)
+
+var logger = function (option) {
+  option = option || {}
+  return bunyan.createLogger({
+    name: "log", 
+    src: false,
+    streams: [
+      {
+        level: 'info',
+        stream: prettyStdOut
+      },
+      {
+        level: 'info',
+        type: 'rotating-file',
+        path: path.join(option.root || 'data.log/', '/', option.file || 'info.log'),
+        period: '1d',   // daily rotation
+        count: 30       // keep 30 days
+      }
+    ]
+  })
+}
+
+module.exports=logger // trace, debug, info, warn, error, fatal

package.json

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+{
+  "name": "so.base",
+  "version": "0.1.0",
+  "private": true,
+  "dependencies": {
+    "bunyan": "^1.8.12",
+    "bunyan-pretty-colors": "^0.1.7"
+  },
+  "devDependencies": {},
+  "scripts": {
+    "setup": "npm install"
+  },
+  "author": ""
+}