nestingPattern function
Implementation
RegExp nestingPattern(I18NextOptions options) {
final prefix = RegExp.escape(options.nestingPrefix ?? r'$t(');
final suffix = RegExp.escape(options.nestingSuffix ?? ')');
final separator = RegExp.escape(options.nestingSeparator ?? ',');
return RegExp(
'$prefix'
'(?<key>.*?)'
'($separator\\s*(?<variables>.*?)\\s*)?'
'$suffix',
);
}