import { rcFile } from "rc-config-loader"

function loadRcFile(rcFileName){
    try {
        const results = rcFile(rcFileName);
        // Not Found
        if (!results) {
            return {};
        }
        return results.config;
    } catch (error) {
        // Found it, but it is parsing error
        return {} ; // default value
    }
}
// load config
const config = loadRcFile("your-application");
console.log(config); // => rcfile content

"use strict";
import { rcFile } from "rc-config-loader"
// load .eslintrc from current dir
console.log(rcFile("eslint"));

// load .eslintrc from specific path
console.log(rcFile("eslint", {
    configFileName: `${__dirname}/test/fixtures/.eslintrc`
}));
/*
config: { extends: 'standard',
  rules:
   { 'comma-dangle': [ 2, 'always-multiline' ],
     'arrow-parens': [ 2, 'as-needed' ] } }
filePath: ${__dirname}/test/fixtures/.eslintrc
 */

// load property from pacakge.json
console.log(rcFile("rc-config-loader", {
    packageJSON: {
        fieldName: "directories"
    }
}));
/*
config: { test: 'test' }
filePath: /path/to/package.json
 */

// load .eslintrc from specific dir
console.log(rcFile("eslint", {
    cwd: `${__dirname}/test/fixtures`
}));

// load specific filename from current dir
console.log(rcFile("travis", {configFileName: ".travis"}));
/*
config: { sudo: false, language: 'node_js', node_js: 'stable' }
filePath: /path/to/.travis
 */

// try to load as .json, .yml, js
console.log(rcFile("bar", {
    configFileName: `${__dirname}/test/fixtures/.barrc`,
    defaultExtension: [".json", ".yml", ".js"]
}));

// try to load as foobar, but .foobarrc is not found
console.log(rcFile("foorbar")); // => undefined

// try to load as .json, but it is not json
// throw SyntaxError
try {
    rcFile("unknown", {
        // This is not json
        configFileName: `${__dirname}/test/fixtures/.unknownrc`,
        defaultExtension: ".json"
    })
} catch (error) {
    console.log(error);
    /*
    SyntaxError: Cannot read config file: /test/fixtures/.unknownrc
    */
}