const fs = require('fs');

const readline = require('readline');

function readAllLines(path) {

return new Promise((resolve, reject) => {

// Test file access directly, so that we can fail fast.

// Otherwise, an ENOENT is thrown in the global scope by the readline internals.

try {

fs.accessSync(path, fs.constants.R_OK);

} catch (err) {

reject(err);

}

let lines = [];

const reader = readline.createInterface({

input: fs.createReadStream(path),

crlfDelay: Infinity

});

reader

.on('line', (line) => lines.push(line))

.on('close', () => resolve(lines));

});

}

exports.configFromPath = async function configFromPath(path) {

const lines = await readAllLines(path);

return lines

.filter((line) => !/^\s*$|^\s*?#/.test(line)) // ignore comments and whitespace-only lines

.map((line) => line

.split(/=(.*)/) // the (.*) group causes split only on the first occurrence since values can contain equals signs

.map((s) => s.trim())

)

.reduce((config, [k, v]) => {

config[k] = v;

return config;

}, {});

};