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load-config-file

v2.0.0

Published

Load the config file as a plain object. The config file format can be registered.

Downloads

4,706

Readme

load-config-file npm

Build Status Code Climate Test Coverage downloads license

Load the config file as a plain object.

  • The config file format can be registered.
  • The registered file format order is the search order.
  • the virtual file system can be specfied: loadConfig.setFileSystem(fs)
    • fs.path = require('path.js/lib/path').path for the virtual POSIX path.
      • you must set the path first before call setFileSystem.

Usage

import { Config as loadConfig } from 'load-config-file'
import { parse as parseYaml } from 'yaml'
import * as cson from 'cson';

loadConfig.register(['.yaml', '.yml'], parseYaml); //first search.
loadConfig.register('.cson', cson.parseCSONString.bind(cson)); //second search
loadConfig.register('.json', JSON.parse); //third search.

//Synchronously load config from file.
//it will search config.yaml, config.yml, config.cson, config.json in the current folder.
//the first exist file will be loaded.
//the default encoding is "utf8" if no encoding.
//loadConfig('config', {encoding: 'ascii'})
//the non-enumerable "$cfgPath" property added.
console.log(loadConfig('config'));

const result = await loadConfig('config')
//Asynchronously load config from file
loadConfig('config', function(err, result){
  if (err) {
    console.log('error:', err);
  } else {
    console.log(result);
  }
})

API

var config = require('load-config-file');
  • config.register(extensionNames, parserFunc): register the configuration file format to load. return the configurators if successful.
    • extensionNames (Sting|ArrayOf String): the configuration file extension name(s) with dot.
    • parserFunc Function(context): the configuration context parser function:
      • parse the configuration context and return the plain object.
  • config.setFileSystem(fs): set your favour file system. defaults to 'fs'.
    • the "file system" must implement readFile(path[, options], done) and readFileSync(path[, options])
  • load(path, options, done): Asynchronously load config from file
    • options
      • raiseError (Boolean): raise error if nothing loaded defaults to false.
      • exclude (String|ArrayOf String): excludes some files.
      • encoding (String): the file encoding name. defaults to 'utf8'.
    • return the plain object and the $cfgPath property added if successful.
  • loadSync(path, options): Synchronously load config from file
    • return the plain object and the $cfgPath property added if successful.

Changes

v0.2

  • raiseError option to load function asynchronously.

  • add the $cfgPath(String) non-enumerable property to the result.

  • add object usage supports:

    var cfgObj = new Config(aPath, aOptions) //create a configuration object.
    result = cfgObj.loadSync()

TODO

  • ! how to use the specified promise library via any-promise?
    • currently use the bluebird by default.

License

MIT