Mapping of currency symbols to their corresponding currency codes. Several currencies share a symbol (e.g. "$" → USD/SRD, "£" → GBP/GIP/…); the library lists the major currency first, so we keep the first code seen for each symbol ("first wins") to resolve "$" → USD, "£" → GBP, "₩" → KRW.
Currency options (code + symbol) for selectors, sorted alphabetically by code.
Derived from CURRENCY_SYMBOL_MAP so the full set of currencies known to
country-list-js is available.
Mapping of ISO currency codes to their corresponding currency symbols. Sourced from
country-list-js, so the symbols match the library (e.g. CNY → "CN¥", JPY → "¥", INR → "Rs").