/**
 * @fileoverview The four economies the Projects portfolio files under a legacy
 * code rather than the ISO2 code the World Bank country index holds. Measured
 * across all 28,153 projects on 2026-09-25: `countrycode_exact` on the ISO2 code
 * matches nothing for each of them, while the legacy code matches the economy's
 * whole portfolio. Every other economy in the portfolio is keyed on its ISO2.
 * @module services/projects/portfolio-country-codes
 */
/** The code to search the portfolio with for an uppercase two-character code. */
export declare function toPortfolioCode(code: string): string;
/** The WDI ISO2 code for a code the portfolio publishes, so it chains into the Indicators tools. */
export declare function toWdiIso2(code: string): string;
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