initial commit - far from runnable

node_modules/rxjs/src/internal/config.ts

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+import { Subscriber } from './Subscriber';
+import { ObservableNotification } from './types';
+
+/**
+ * The {@link GlobalConfig} object for RxJS. It is used to configure things
+ * like how to react on unhandled errors.
+ */
+export const config: GlobalConfig = {
+  onUnhandledError: null,
+  onStoppedNotification: null,
+  Promise: undefined,
+  useDeprecatedSynchronousErrorHandling: false,
+  useDeprecatedNextContext: false,
+};
+
+/**
+ * The global configuration object for RxJS, used to configure things
+ * like how to react on unhandled errors. Accessible via {@link config}
+ * object.
+ */
+export interface GlobalConfig {
+  /**
+   * A registration point for unhandled errors from RxJS. These are errors that
+   * cannot were not handled by consuming code in the usual subscription path. For
+   * example, if you have this configured, and you subscribe to an observable without
+   * providing an error handler, errors from that subscription will end up here. This
+   * will _always_ be called asynchronously on another job in the runtime. This is because
+   * we do not want errors thrown in this user-configured handler to interfere with the
+   * behavior of the library.
+   */
+  onUnhandledError: ((err: any) => void) | null;
+
+  /**
+   * A registration point for notifications that cannot be sent to subscribers because they
+   * have completed, errored or have been explicitly unsubscribed. By default, next, complete
+   * and error notifications sent to stopped subscribers are noops. However, sometimes callers
+   * might want a different behavior. For example, with sources that attempt to report errors
+   * to stopped subscribers, a caller can configure RxJS to throw an unhandled error instead.
+   * This will _always_ be called asynchronously on another job in the runtime. This is because
+   * we do not want errors thrown in this user-configured handler to interfere with the
+   * behavior of the library.
+   */
+  onStoppedNotification: ((notification: ObservableNotification<any>, subscriber: Subscriber<any>) => void) | null;
+
+  /**
+   * The promise constructor used by default for {@link Observable#toPromise toPromise} and {@link Observable#forEach forEach}
+   * methods.
+   *
+   * @deprecated As of version 8, RxJS will no longer support this sort of injection of a
+   * Promise constructor. If you need a Promise implementation other than native promises,
+   * please polyfill/patch Promise as you see appropriate. Will be removed in v8.
+   */
+  Promise?: PromiseConstructorLike;
+
+  /**
+   * If true, turns on synchronous error rethrowing, which is a deprecated behavior
+   * in v6 and higher. This behavior enables bad patterns like wrapping a subscribe
+   * call in a try/catch block. It also enables producer interference, a nasty bug
+   * where a multicast can be broken for all observers by a downstream consumer with
+   * an unhandled error. DO NOT USE THIS FLAG UNLESS IT'S NEEDED TO BUY TIME
+   * FOR MIGRATION REASONS.
+   *
+   * @deprecated As of version 8, RxJS will no longer support synchronous throwing
+   * of unhandled errors. All errors will be thrown on a separate call stack to prevent bad
+   * behaviors described above. Will be removed in v8.
+   */
+  useDeprecatedSynchronousErrorHandling: boolean;
+
+  /**
+   * If true, enables an as-of-yet undocumented feature from v5: The ability to access
+   * `unsubscribe()` via `this` context in `next` functions created in observers passed
+   * to `subscribe`.
+   *
+   * This is being removed because the performance was severely problematic, and it could also cause
+   * issues when types other than POJOs are passed to subscribe as subscribers, as they will likely have
+   * their `this` context overwritten.
+   *
+   * @deprecated As of version 8, RxJS will no longer support altering the
+   * context of next functions provided as part of an observer to Subscribe. Instead,
+   * you will have access to a subscription or a signal or token that will allow you to do things like
+   * unsubscribe and test closed status. Will be removed in v8.
+   */
+  useDeprecatedNextContext: boolean;
+}