interpolateVariables function

String interpolateVariables(
  1. String text,
  2. Map<String, dynamic>? variables
)

Replaces {{ name }} placeholders in text using variables. A matched value is stringified via toString(); an unmatched placeholder collapses to an empty string; a null/empty variables map or a string with no {{ returns text unchanged.

Implementation

String interpolateVariables(String text, Map<String, dynamic>? variables) {
  if (variables == null || variables.isEmpty || !text.contains('{{')) {
    return text;
  }
  return text.replaceAllMapped(
    _identifierPlaceholderPattern,
    (m) => variables[m.group(1)]?.toString() ?? '',
  );
}