/**
 * Options for a call to {@link envOrArg}.
 */
export type EnvOrArgOptions = {
    allowBlank?: boolean;
    argv?: string[];
    env?: Record<string, string | undefined>;
};
/**
 * Value returned from {@link envOrArg} when an arg is present, but
 * it appears to be a flag instead of a param.
 */
export declare const ARG_FLAG = "<flag>";
/**
 * Best-effort attempt to find a configuration arg in both the
 * environment and the command-line, when you don't want to define
 * the entire parameter set.  Tries its best to do what you mean,
 * such as converting `SNAKE_CASE` environment params to `--kebab-case`
 * command line params and vice versa.
 * Returns {@link ARG_FLAG} if it appears the command line param
 * is present, but is actually a flag.
 */
export declare const envOrArg: (nameOrNames: string | string[], options?: EnvOrArgOptions) => string | undefined;
//# sourceMappingURL=env-or-arg.d.ts.map