Documentation and string enum.

Author: kinyoklion

packages/shared/common/src/datasource/DataSourceErrorKinds.ts

@@ -1,15 +1,15 @@
 export enum DataSourceErrorKind {
   /// An unexpected error, such as an uncaught exception, further
   /// described by the error message.
-  Unknown,
+  Unknown = 'UNKNOWN',
 
   /// An I/O error such as a dropped connection.
-  NetworkError,
+  NetworkError = 'NETWORK_ERROR',
 
   /// The LaunchDarkly service returned an HTTP response with an error
   /// status, available in the status code.
-  ErrorResponse,
+  ErrorResponse = 'ERROR_RESPONSE',
 
   /// The SDK received malformed data from the LaunchDarkly service.
-  InvalidData,
+  InvalidData = 'INVALID_DATA',
 }

packages/shared/sdk-client/src/api/LDClient.ts

@@ -214,6 +214,9 @@ export interface LDClient {
    *   The callback parameters are the context and an Error object. Errors are also output by
    *   the {@link logger} at the error level.
    *
+   * - `"dataSourceStatus"`: Event indicating that there has been a change in the status of the
+   *   data source. This will include the state of the data source as well any error information.
+   *
    * @param key
    *   The name of the event for which to listen.
    * @param callback

packages/shared/sdk-client/src/datasource/DataSourceStatus.ts

@@ -1,11 +1,11 @@
 import DataSourceStatusErrorInfo from './DataSourceStatusErrorInfo';
 
 export enum DataSourceState {
-  Initializing,
-  Valid,
-  Interrupted,
-  SetOffline,
-  Closed,
+  Initializing = 'INITIALIZING',
+  Valid = 'VALID',
+  Interrupted = 'INTERRUPTED',
+  SetOffline = 'SET_OFFLINE',
+  Closed = 'CLOSED',
   // TODO: SDK-702 - Implement network availability behaviors
   // NetworkUnavailable,
 }