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const fs = require('fs');
const { resolve } = require('path');
const isDev = process.env.NODE_ENV !== 'production';
const parse = src => {
const obj = {};
// convert Buffers before splitting into lines and processing
src
.toString()
.split('\n')
.forEach(line => {
// matching "KEY' and 'VAL' in 'KEY=VAL'
const keyValueArr = line.match(/^\s*([\w.-]+)\s*=\s*(.*)?\s*$/);
// matched?
if (keyValueArr != null) {
const key = keyValueArr[1];
// default undefined or missing values to empty string
let value = keyValueArr[2] || '';
// expand newlines in quoted values
const len = value ? value.length : 0;
if (
len > 0 &&
value.charAt(0) === '"' &&
value.charAt(len - 1) === '"'
) {
value = value.replace(/\\n/gm, '\n');
}
// remove any surrounding quotes and extra spaces
value = value.replace(/(^['"]|['"]$)/g, '').trim();
obj[key] = value;
}
});
return obj;
};
const dotenvPath = [
resolve(process.cwd(), '.env'),
isDev && resolve(process.cwd(), '.env.local'),
].filter(Boolean);
const env = dotenvPath
.filter(path => fs.existsSync(path))
.map(path => parse(fs.readFileSync(path)))
.reduce((envObj, parsed) => Object.assign(envObj, parsed), {});
// eslint-disable-next-line array-callback-return
Object.keys(env).map(key => {
// eslint-disable-next-line no-prototype-builtins
if (!process.env.hasOwnProperty(key)) process.env[key] = env[key];
});