NodeJS application configuration files loader

• NodeJS, Typescript
• Config chaining (hierarchy)
• Multiple environments support, local overwrites
• JSON/JS configs, JS is to use environment variables
• Validation using class-validator library
• Configs are typed

Usage

Load config:

    const configSource = new ConfigFileChain(
      path.resolve(__dirname, '../config'),
      process.env.PROJECT_ENV as string,
    );
    const configFactory = new ConfigFactory(configSource);

    const serverConfig = await configFactory.create<ServerConfig>(ServerConfig);

Create your own config type:

export class ExampleConfig extends Config {
  @IsNotEmpty()
  public value!: string;

  public getName(): string {
    return 'example';
  }
}