ConfigurableEnvironment class abstract

A configurable extension of the Environment interface that allows mutation of environment internals such as active profiles and property sources.

This interface exposes:

• propertySources: the mutable stack of PropertySources used for resolving properties.
• setActiveProfiles: to explicitly set the profiles considered active during configuration.
• setDefaultProfiles: to define fallback profiles when no active profiles are provided.

It is typically implemented by core environment types like AbstractEnvironment and StandardEnvironment.

Example usage:

final env = StandardEnvironment();

env.setActiveProfiles(['dev']);
env.setDefaultProfiles(['default']);

env.propertySources.addLast(
  MapPropertySource('app', {'debug': 'true'}),
);

print(env.getProperty('debug')); // true

Use this interface when building frameworks or apps that require profile-based configuration or dynamic property source injection.