/**
 * The regular express (regex) pattern matches a string that represents
 * a hexadecimal color code in the form of #RRGGBB or #RRGGBBAA
 *
 * `^`: Matches the beginning of the string.
 *
 * `#`: Matches the "#" character that should appear at the beginning of a hexadecimal color code.
 *
 * `([0-9a-f]{6})`: Matches a six-digit hexadecimal value represented by
 * the [0-9a-f] character class that matches any hexadecimal digit (0-9, a-f).
 *
 * The `{6}` quantifier specifies that the character class should be matched exactly six times.
 *
 * `{1,2}`: Specifies that the previous group (([0-9a-f]{6})) can occur one or two times.
 * This allows the regular expression to match both the six-digit (#RRGGBB)
 * and eight-digit (#RRGGBBAA) color code formats.
 *
 * `$`: Matches the end of the string.
 *
 * `/i`: Indicates that the regular expression is case-insensitive, so it will match both uppercase and lowercase letters.
 *
 * Example:
 *
 * #FFA500 - This is a valid hexadecimal color code that represents the color orange.
 *
 * #aabbccdd - This is also a valid hexadecimal color code that represents a semi-transparent shade of gray. The regular
 * expression matches this code because of the {1,2} quantifier.
 *
 * #12345 - This is not a valid hexadecimal color code because it has fewer than six digits.
 *
 * #ZZZZZZ - This is not a valid hexadecimal color code because it contains non-hexadecimal characters.
 * The regular expression will fail to match this code.
 */
export declare const hexadecimalColorTest: RegExp;
