34 lines
1.3 KiB
TypeScript
34 lines
1.3 KiB
TypeScript
import { resolve } from 'path'
|
|
import { config } from 'dotenv'
|
|
|
|
// resolve config file
|
|
const envFilePath = resolve(process.cwd(), '.env')
|
|
const ipValidate: RegExp = /^((25[0-5]|(2[0-4]|1\d|[1-9]|)\d)\.?\b){4}$/
|
|
|
|
// set current environment variable file
|
|
config({ path: envFilePath })
|
|
|
|
/**
|
|
* Method to validate if environment variables found in file utils/env.ts
|
|
*
|
|
* @param name Name of the environment variable in .env
|
|
* @param fallback fallback value to set if environment variable is not set (used manually in src/keys.ts)
|
|
* @returns environment variable value
|
|
*/
|
|
export function getEnvVar(name: string, fallback?: string): string {
|
|
const value = process.env[name] ?? fallback
|
|
if (!value)
|
|
throw new Error(`Environment variable ${name} is not set.`)
|
|
|
|
// validate User-Generated Discord Application Tokens
|
|
if (name === "CLIENT_TOKEN" && value.length > 72)
|
|
throw new Error(`The "CLIENT_TOKEN" provided is not of at least length 72.
|
|
This is probably an invalid token unless Discord updated their token policy. Please provide a valid token.`)
|
|
|
|
// validate IPv4 address found in environment variables
|
|
if ((name.endsWith("_IP") || name.endsWith("_ADDRESS")) && !ipValidate.test(value))
|
|
throw new Error(`Environment variable ${name} does not follow IPv4 formatting.`)
|
|
|
|
// return env variable
|
|
return value
|
|
} |