function escapeCode( name ) {
	if ( hasOwnProp( ANSI_ESCAPE_CODES, name ) ) {
		return ANSI_ESCAPE_CODES[ name ];
	}
	return null;
}
Returns the ANSI escape code corresponding to a provided escape code name.

@private
@param {string} name - ANSI escape code name
@returns {(string|null)} escape code