configuratoror

Simple module to load inheritable configs from folder

From the folder path you specify configuratoror loads all config files in memory, parses them and returns a config loader that in turn returns a config for your env.

install

npm i configuratoror

usage

folder structure

etc/
  common.js
  production.js
  development.js
  whatever.js

config files

common.js:

module.exports = {
    database: {
        uri: 'http://localhost:1338',
        username: 'admin'
    }
}

production.js:

module.exports = {
    _extends: 'common',
    database: {
        name: 'production',
        password: 'michaeljordan',
    }
}

load config

var options = {
    folder: './etc', // path from pwd to folder where configs are stored
};
var env = 'production'; // it's up to you how to determine what environment you're running in, e.g. process.env.NODE_ENV
var config = require('configuratoror')(options)(env);

console.log(config);

output

{
    database: {
        uri: 'http://localhost:1338',
        username: 'admin'
        name: 'production',
        password: 'michaeljordan',
    },
}

details

• the config files must end in .js and are loaded using NodeJS require, so they need to use module.exports to export the configuration object.
• to determine which config files are present in options.folder, fs.readdirSync is used. This removes the need for callbacks, but introduces a sync step. If you absolutely want the shortest boot time, don't use this module (although I doubt you'll notice the difference).
• a config can extend another config by specifying _extends: '<name of other config>'. Properties in the extending config overwrite properties in the extended config. There's no maximum to the amount of inheritance levels.
• configs are deeply merged using lodash.merge.
• this module throws errors because your process should die when it fails to load its configuration. If you disagree (for your specific use case), don't use this module or try-catch your way out of it.