next-env.d.ts

/// <reference types="next" />
/// <reference types="next/types/global" />
// For CSS
declare module "*.module.css" {
  const classes: { [key: string]: string };
  export default classes;
}

// For LESS
declare module "*.module.less" {
  const classes: { [key: string]: string };
  export default classes;
}

// For SCSS
declare module "*.module.scss" {
  const classes: { [key: string]: string };
  export default classes;
}

declare namespace NodeJS {
  interface ProcessEnv {
    [key: string]: string | undefined;
    NODE_ENV?: "development" | "production" | "test";
  }
}