import { ExpoConfig } from '@expo/config';
import { DefinePlugin } from 'webpack';
import { Environment, Mode } from '../types';
export interface ClientEnv {
    __DEV__: boolean;
    'process.env': {
        [key: string]: string;
    };
}
export declare function createClientEnvironment(mode: Mode, publicPath: string, nativeAppManifest: ExpoConfig): ClientEnv;
/**
 * Required for `expo-constants` https://docs.expo.io/versions/latest/sdk/constants/
 * This surfaces the `app.json` (config) as an environment variable which is then parsed by `expo-constants`.
 */
export default class ExpoDefinePlugin extends DefinePlugin {
    static createClientEnvironment: typeof createClientEnvironment;
    static fromEnv: (env: Pick<Environment, "mode" | "projectRoot" | "config" | "locations">) => ExpoDefinePlugin;
    constructor({ mode, publicUrl, productionManifestPath, config, }: {
        mode: Mode;
        publicUrl: string;
        productionManifestPath: string;
        config: ExpoConfig;
    });
}