提供一种在 Terminal 环境下对代码位置的执行堆栈进行跟踪，并提供nodejs版本提供核心模型中提供的方法github库上的链接访问，该插件主要用于对源代码研究和代码执行逻辑的学习及跟踪的需要。
安装
npm install --save code-tracer
使用
在--debug模式下将启用日志打印功能
var tracer = require('code-tracer');
// 打印当前的信息，类似console.log
tracer.log('I am watching');
// 打印当前位置的代码堆栈信息
tracer.stack('What is stacks?');
tracer.log 输出结果
[Thu Apr 27 2017 18:07:11 GMT+0800 (CST)] 🚀
Platform: darwin
Pid: 36241
NodeJS: v7.9.0
Info: I am watching
↘︎⎼ HomeController.index [7:14] app/controller/home.js
tracer.stack 输出结果
[Thu Apr 27 2017 18:03:32 GMT+0800 (CST)] 🚀
Platform: darwin
Pid: 34024
NodeJS: v7.9.0
Info: 'What is stacks?'
1 ➜ HomeController.index [7:14] app/controller/home.js
2 ➜ ↘︎⎼ Object.classControllerMiddleware [77:32] node_modules/egg-core/lib/loader/mixin/controller.js
3 ➜ ↘︎⎼ <method> [<line>:<pos>] at classControllerMiddleware.next (<anonymous>)
4 ➜ ↘︎⎼ Object.dispatch [339:14] node_modules/koa-router/lib/router.js
5 ➜ ↘︎⎼ <method> [<line>:<pos>] at dispatch.next (<anonymous>)
6 ➜ ↘︎⎼ onFulfilled [69:19] node_modules/co/index.js
7 ➜ ↘︎⎼ Object.co [52:10] node_modules/co/index.js
8 ➜ ↘︎⎼ Object.toPromise [124:63] node_modules/co/index.js
9 ➜ ↘︎⎼ next [105:29] node_modules/co/index.js
10 ➜ ↘︎⎼ onFulfilled [74:7] node_modules/co/index.js
11 ➜ ↘︎⎼ Object.co [52:10] node_modules/co/index.js
12 ➜ ↘︎⎼ Object.toPromise [124:63] node_modules/co/index.js
13 ➜ ↘︎⎼ next [105:29] node_modules/co/index.js
14 ➜ ↘︎⎼ onFulfilled [74:7] node_modules/co/index.js
15 ➜ ↘︎⎼ Object.co [52:10] node_modules/co/index.js
16 ➜ ↘︎⎼ Object.toPromise [124:63] node_modules/co/index.js
17 ➜ ↘︎⎼ next [105:29] node_modules/co/index.js
18 ➜ ↘︎⎼ onFulfilled [74:7] node_modules/co/index.js
19 ➜ ↘︎⎼ Object.co [52:10] node_modules/co/index.js
20 ➜ ↘︎⎼ Object.toPromise [124:63] node_modules/co/index.js
21 ➜ ↘︎⎼ next [105:29] node_modules/co/index.js
22 ➜ ↘︎⎼ onFulfilled [74:7] node_modules/co/index.js
23 ➜ ↘︎⎼ Object.co [52:10] node_modules/co/index.js
24 ➜ ↘︎⎼ Object.toPromise [124:63] node_modules/co/index.js
25 ➜ ↘︎⎼ next [105:29] node_modules/co/index.js
26 ➜ ↘︎⎼ onFulfilled [74:7] node_modules/co/index.js
27 ➜ ↘︎⎼ Object.co [52:10] node_modules/co/index.js
28 ➜ ↘︎⎼ Object.toPromise [124:63] node_modules/co/index.js
29 ➜ ↘︎⎼ next [105:29] node_modules/co/index.js
30 ➜ ↘︎⎼ onFulfilled [74:7] node_modules/co/index.js
31 ➜ ↘︎⎼ Object.co [52:10] node_modules/co/index.js
32 ➜ ↘︎⎼ Object.toPromise [124:63] node_modules/co/index.js
33 ➜ ↘︎⎼ next [105:29] node_modules/co/index.js
34 ➜ ↘︎⎼ onFulfilled [74:7] node_modules/co/index.js
35 ➜ ↘︎⎼ Object.co [52:10] node_modules/co/index.js
36 ➜ ↘︎⎼ Object.toPromise [124:63] node_modules/co/index.js
37 ➜ ↘︎⎼ next [105:29] node_modules/co/index.js
38 ➜ ↘︎⎼ onFulfilled [74:7] node_modules/co/index.js
39 ➜ ↘︎⎼ Object.co [52:10] node_modules/co/index.js
40 ➜ ↘︎⎼ Object.toPromise [124:63] node_modules/co/index.js
41 ➜ ↘︎⎼ next [105:29] node_modules/co/index.js
42 ➜ ↘︎⎼ onFulfilled [74:7] node_modules/co/index.js
43 ➜ ↘︎⎼ process._tickCallback [109:7] internal/process/next_tick.js 🔗 https://github.com/nodejs/node/blob/v7.x/lib/internal/process/next_tick.js#L109
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