import { Env, EnvActions, EnvFactoryOpts, EnvImpl } from "../sys-env.js";
export declare class CFEnvActions implements EnvActions {
    readonly injectOnRegister: Record<string, string>;
    readonly cfEnv: Map<string, string>;
    readonly opts: Partial<EnvFactoryOpts>;
    env?: EnvImpl;
    static new(opts?: Partial<EnvFactoryOpts>): EnvActions;
    static inject(o: Record<string, string>): void;
    private constructor();
    active(): boolean;
    register(env: Env): Env;
    get(key: string): string | undefined;
    set(key: string, value?: string): void;
    delete(key: string): void;
    keys(): string[];
}
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