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zelig

v1.0.5

Published

get configuration by env

Downloads

5

Readme

ZELIG 变色龙

根据环境变量 NODE_ENV 的值决定使用哪个配置文件

默认环境为production

一般而言项目的配置文件目录结构形如:

|--config
|    |--profiles
|    |     |--development.EXT
|    |     |--beta.EXT
|    |     |--production.EXT
|    |
|    |--common.EXT
|
|--package.json
|--...

支持的配置文件:

js, yml, yaml, json, coffee, properties, ini; 其中:

  • yml,yaml 需要添加依赖 js-yaml
  • coffee 格式需要添加依赖 coffee-script
  • ini,properties 格式需要添加依赖 properties

配置文件所在路径

默认是项目根目录的 config 目录,如上结构图所示。也可以根据启动函数修改,仅支持绝对路径:

node app.js --configPath=/home/config

优先级(基本用不到)

对于同名但后缀不同的文件,zelig都会对其进行合并,各配置文件中的同名配置项在合并时有优先级。

  • common的优先级最低。如果有多个类型的同名文件,按照js, coffee, yml, yaml, json, ini, properties的顺序优先级递减。
  • 假如 dev.js 和 dev.json 中都对path有定义,那么依据优先级,最终会使用dev.js中的定义

支持underscore模板将配置写入配置,如:

config/common.js

{
    wechat:{
         getCodeUrl:'...?appid=<%= media.wechat.appid %>...'
    }
}

config/profile/local.yaml

media:
    wechat:
         appid: APPID

此时 require('zelig') 将得到:

{
    "wechat": {
        "getCodeUrl": "...?appid=APPID..."
    },
    "media": {
        "wechat": {
            "appid": "APPID"
        }
    }
}

Tip:

  • 内置一个变量:_projectDir , 值为项目根目录。
  • 这带来的坏处是配置的value不能使用<% %>模式的文本配置了,推荐使用mustache风格
_.templateSettings.interpolate = /{{([\s\S]+?)}}/g;