/** Shorter cap for names built from two config values, keeping the whole readable. */
export declare const COMPOSITE_VALUE_LENGTH = 14;
/**
 * Normalize a config value for use inside a default name: collapse whitespace
 * (names are rendered on one line), strip control characters, and truncate.
 * Returns an empty string for values that carry no signal, so callers can fall
 * back to the bare type name.
 */
export declare function describeGraderValue(value: unknown, maxLength?: number): string;
/**
 * Normalize a `string[]` config value (tool names, skill names) into a short
 * comma-joined description. Non-array or empty values yield an empty string so
 * callers fall back to the bare type name.
 */
export declare function describeGraderList(value: unknown, maxLength?: number): string;
/**
 * Join a grader type with its config-derived discriminators, skipping parts
 * that carried no signal. Returns the bare type when nothing discriminates —
 * a grader whose config can't distinguish instances (e.g. `completed`) should
 * not be decorated with noise.
 */
export declare function graderNameFrom(type: string, ...parts: string[]): string;
/** Warning name for a `defaultName` the resolver had to reject. */
export declare const DEFAULT_NAME_WARNING = "VallyGraderDefaultNameWarning";
/**
 * Resolve a grader type's config-derived default name, or `undefined` when the
 * type doesn't supply one (or supplies an unusable one).
 *
 * Returning `undefined` rather than falling back to the type name lets callers
 * preserve their own existing fallbacks — notably the name a grader sets on its
 * `GraderResult`, which must keep winning over the bare type for graders that
 * have not opted into `defaultName`.
 *
 * `defaultName` is arbitrary plugin code, so every rejection is non-fatal and
 * reported via `process.emitWarning` — silently degrading would leave a plugin
 * author with no signal that their naming function never ran. A value is
 * rejected when it throws, is not a string (including a Promise from an
 * accidentally `async` implementation), or normalizes to empty.
 */
export declare function resolveDefaultGraderName(defaultName: ((config: Record<string, unknown>) => string) | undefined, config: Record<string, unknown>): string | undefined;
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