/**
 * The `ignore` search filter: path patterns whose chunks a search leaves out.
 *
 * The index keeps everything; ignoring happens at query time, as a Milvus
 * filter expression on `file_path`, so changing what is ignored needs no
 * reindex. A project can set a default in `.codesearchrc.json`
 * (`searchIgnore`), which applies whenever a request doesn't pass `ignore`;
 * `ignore: []` searches everything.
 *
 * Patterns are relative to the workspace root:
 *   docs/          a folder (trailing slash)
 *   docs           a folder, or a file with exactly that path
 *   *.md           a wildcard: `*` matches any run of characters, `/` included
 *   server/**\/README.md   `**` is the same as `*`
 *
 * Milvus `like` treats `%` and `_` as wildcards, so both are escaped and match
 * literally (`__tests__/` means that folder, not any 9-character name).
 */
export declare const MAX_IGNORE_PATTERNS = 20;
export declare const MAX_IGNORE_PATTERN_LENGTH = 200;
export type IgnoreSource = 'request' | 'config' | 'none';
export interface ResolvedIgnore {
    patterns: string[];
    source: IgnoreSource;
}
/** One pattern as a Milvus expression that MATCHES the paths it names. */
export declare function patternToMatchExpr(raw: string): string;
/** The expression that excludes every pattern, or undefined for none. */
export declare function buildIgnoreExpr(patterns: readonly string[]): string | undefined;
/**
 * Validate a request's `ignore` value. `undefined` means "not given" (the
 * config default applies); an array, even empty, is the caller's choice.
 */
export declare function parseIgnore(value: unknown): {
    ok: true;
    patterns: string[] | undefined;
} | {
    ok: false;
    error: string;
};
/** The request's patterns if it gave any (even none), else the config default. */
export declare function resolveIgnore(requested: string[] | undefined, configDefault: readonly string[] | undefined): ResolvedIgnore;
/** One line for a response, so a caller knows what it didn't see. */
export declare function describeIgnore(r: ResolvedIgnore): string | undefined;