/**
 * One warning per deprecated option per process, through Node's own `DeprecationWarning` channel.
 *
 * Going through `process.emitWarning` rather than the console means the platform's switches apply:
 * `--no-deprecation` silences these, `--throw-deprecation` turns them into errors for a CI job that
 * must stay clean, and `process.on('warning')` sees them. Where there is no `process`, such as a
 * browser, the warning goes to `console.warn` instead.
 */
/** Warns once that a deprecated option was used. `code` identifies it, as `NEXUS_DEP_*`. */
export declare function warnDeprecated(code: string, message: string): void;
/** Warns when an option is present, for the options that have never been read. */
export declare function warnUnreadOption(present: boolean, code: string, option: string): void;