/**
 * @fileoverview Input shapes for World Bank identifiers. Each pattern admits the
 * shape real identifiers take and nothing wider, since an ID that escapes into a
 * path upstream can't route answers with an error page rather than the
 * invalid-value envelope. The `all` collection keyword fits the country and
 * indicator shapes, so it is refused in the handlers, where the rejection carries
 * a declared reason and recovery hint a schema rejection cannot.
 * @module services/worldbank/identifiers
 */
/**
 * One country or aggregate code. Every entity `/country` lists has a
 * three-character ID and a two-character ISO2 code of letters and digits
 * (`USA`/`US`, `WLD`/`1W`).
 */
export declare const COUNTRY_CODE: RegExp;
export declare const COUNTRY_CODE_MESSAGE = "Pass one ISO2, ISO3, or aggregate code of 2\u20133 letters or digits, not a list of codes. Use worldbank_list_countries to browse countries, or worldbank_get_data to query several at once.";
/**
 * A `countries` value that holds at least one code: some character that is
 * neither whitespace nor one of the separators {@link splitCountryCodes} splits
 * on. The schema pattern of the tools that require a code.
 */
export declare const COUNTRY_LIST_CONTENT: RegExp;
/**
 * Split a `countries` value, a string or every element of an array, into codes.
 * Comma, semicolon, and pipe all separate codes, since no country or aggregate
 * code contains any of them; surrounding whitespace and blank segments drop out.
 */
export declare function splitCountryCodes(value: string | readonly string[]): string[];
/**
 * One indicator ID. All 29,544 catalog IDs use only letters, digits, `.`, `_`,
 * and `-` (`NY.GDP.PCAP.CD`, `CoCA_fexp`, `3.0.Rate75-25`). Anything else is
 * either a list, or a character that escapes into a path upstream answers with
 * HTTP 404 (`/`, `%`) or 403 (`?`).
 */
export declare const INDICATOR_ID: RegExp;
export declare const INDICATOR_ID_MESSAGE = "Pass one indicator ID made of letters, digits, \".\", \"_\", or \"-\" (e.g. NY.GDP.PCAP.CD), not a list of IDs. Use worldbank_search_indicators to find indicator IDs.";
/** True for the `all` keyword, which selects a whole collection rather than one item. */
export declare function isAllSelector(value: string): boolean;
/**
 * A topic or source ID filter. All 21 topics and 71 sources have numeric IDs.
 * Blank and surrounding whitespace pass because form clients submit every field
 * and the handler trims, reading blank as no filter.
 */
export declare const CATALOG_FILTER_ID: RegExp;
export declare const TOPIC_ID_MESSAGE = "topic_id is a numeric topic ID (e.g. \"3\"). Use worldbank_list_topics to browse valid IDs.";
export declare const SOURCE_ID_MESSAGE = "source_id is a numeric source ID (e.g. \"2\"). Use worldbank_list_sources to browse valid IDs.";
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