tryGetString method

@preferInline String? tryGetString(String key, { String? defaultValue, })

Retrieves a String value from the JSON map associated with the given key.

If the value associated with the key is already a String, it returns that value. Otherwise, it returns defaultValue.

Unlike getString, this method does not store the parsed or existing String back into the JSON map.

Returns:

• A String if the value is valid.
• defaultValue if the value is not a valid String.
• null if both the value and defaultValue are null.

Implementation

@preferInline
String? tryGetString(
  String key, {
  String? defaultValue,
}) {
  final value = _json[key];
  if (value is String) {
    return value;
  }
  return defaultValue;
}