replace method

String replace([
  1. Map<String, Object?> args = const {}
]) 
final inp = '{IS_LOADING ? "Loading..." : "{COUNT > 1 ? "COUNT items" : "{COUNT == 1 ? "One item" : "No items"}"}"}';
TextReplacer.replace(inp, {'COUNT': 1, 'IS_LOADING': true});  // Loading...
TextReplacer.replace(inp, {'COUNT': 0, 'IS_LOADING': false}); // No items
TextReplacer.replace(inp, {'COUNT': 1, 'IS_LOADING': false}); // One item
TextReplacer.replace(inp, {'COUNT': 2, 'IS_LOADING': false}); // 2 items

final inp1 = "There {NUMBER > 1 ? \"are NUMBER items\" : \"is an item\"} in stock";
inp1.replace({'NUMBER': 1}); // There is an item in stock
inp1.replace({'NUMBER': 2}); // There are 2 items in stock

final inp2 = "Status: {STATUS == active ? \"activated!\" : \"canceled!\"}";
inp2.replace({'STATUS': "active"}); // Status: activated!
inp2.replace({'STATUS': "inactive"}); // Status: canceled!

final inp3 = "Status: {IS_ACTIVATED ? \"activated!\" : \"inactivated!\"}";
inp3.replace({'IS_ACTIVATED': true}); // Status: activated!
inp3.replace({'IS_ACTIVATED': false}); // Status: inactivated!

final inp4 = "Last seen: {TIME: {a:now, b:3 min ago}}";
inp4.replace({"TIME": "a"}); // Last seen: now
inp4.replace({"TIME": "b"}); // Last seen: 3 min ago

Implementation

String replace([
  Map<String, Object?> args = const {},
]) {
  return TextReplacer.replace(this, args);
}