ConfigurationBuilder class final

Assembles a ConfigurationRoot from one or more ConfigurationSources.

Sources are evaluated in registration order; the last source added always wins when multiple sources define the same key.

final config = ConfigurationBuilder()
    .addInMemory({'app:name': 'Orders', 'app:version': '1.0'})
    .addJsonFile('appsettings.json')
    .addJsonFile('appsettings.production.json', optional: true)
    .addEnvironmentVariables(prefix: 'APP_')
    .build();

print(config['app:name']);

Constructors

ConfigurationBuilder()
Creates a ConfigurationBuilder with no initial sources.

Properties

hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
sources → List<ConfigurationSource>
The read-only list of sources added so far.
no setter

Methods

add(ConfigurationSource source) → ConfigurationBuilder
Adds a ConfigurationSource directly.
addEnvironmentVariables({String prefix = ''}) → ConfigurationBuilder
Adds an EnvironmentConfigurationSource.
addInMemory(Map<String, String?> initialData) → ConfigurationBuilder
Adds key-value pairs from an in-memory Map<String, String?>.
addJsonFile(String filePath, {bool optional = false, bool reloadOnChange = false}) → ConfigurationBuilder
Adds a JsonFileConfigurationSource that loads from filePath.
addJsonString(String jsonContent) → ConfigurationBuilder
Adds a JsonStringConfigurationSource that parses jsonContent directly.
addMap(Map<String, dynamic> map) → ConfigurationBuilder
Adds a generic Map<String, dynamic> provider.
build() → ConfigurationRoot
Builds and returns a ConfigurationRoot from the registered sources.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited