detect-environment/lib/readEnvFile.js

Detect environments in JavaScript similar to the way Laravel does

'use strict';

var
    //
    fs = require('fs'),

    //
    createPathsArray = require('./createPathsArray'),

    /**
     *
     */
    readEnvFile = function readEnvFile (options, envName) {

        //
        if (options.strict !== true) {
            options.strict = false;
        }

        //
        if (!envName || typeof envName !== 'string') {
            throw new TypeError('readEnvFile:');
        }

        var
            //
            pathsArr = createPathsArray(options, envName),

            //
            path = pathsArr.shift();

        //
        while (path) {

            //
            if (fs.existsSync(path)) {
                return fs.readFileSync(path).toString();
            }

            //
            path = pathsArr.shift();

        }

        //
        if (options.strict) {
            throw new Error('readEnvFile:');
        }

        //
        return '';

    };

// Expose to node.js
module.exports = readEnvFile;