export declare const devStrings: {
    allowSyntheticDefaultImports: () => string;
    target: (name: string) => string;
    reloadEntryOnStylesheet: (value: boolean) => string;
    importFile: (name: any) => string;
    processEnv: (vars: {
        [key: string]: string;
    }) => string;
    setEntry: (name: any) => string;
    openPackage: (name: any, conflicting: {
        [key: string]: string;
    }) => string;
    openFile: (name: string) => string;
    closeFile: () => string;
    closePackage: (entry?: string) => string;
};
export declare function sourceMapsURL(file: string): string;
export declare function sourceMapsCSSURL(file: string): string;