feat: initial commit

node_modules/rxjs/_esm2015/internal/Subscription.js

@@ -0,0 +1,137 @@
+import { isArray } from './util/isArray';
+import { isObject } from './util/isObject';
+import { isFunction } from './util/isFunction';
+import { UnsubscriptionError } from './util/UnsubscriptionError';
+export class Subscription {
+    constructor(unsubscribe) {
+        this.closed = false;
+        this._parentOrParents = null;
+        this._subscriptions = null;
+        if (unsubscribe) {
+            this._ctorUnsubscribe = true;
+            this._unsubscribe = unsubscribe;
+        }
+    }
+    unsubscribe() {
+        let errors;
+        if (this.closed) {
+            return;
+        }
+        let { _parentOrParents, _ctorUnsubscribe, _unsubscribe, _subscriptions } = this;
+        this.closed = true;
+        this._parentOrParents = null;
+        this._subscriptions = null;
+        if (_parentOrParents instanceof Subscription) {
+            _parentOrParents.remove(this);
+        }
+        else if (_parentOrParents !== null) {
+            for (let index = 0; index < _parentOrParents.length; ++index) {
+                const parent = _parentOrParents[index];
+                parent.remove(this);
+            }
+        }
+        if (isFunction(_unsubscribe)) {
+            if (_ctorUnsubscribe) {
+                this._unsubscribe = undefined;
+            }
+            try {
+                _unsubscribe.call(this);
+            }
+            catch (e) {
+                errors = e instanceof UnsubscriptionError ? flattenUnsubscriptionErrors(e.errors) : [e];
+            }
+        }
+        if (isArray(_subscriptions)) {
+            let index = -1;
+            let len = _subscriptions.length;
+            while (++index < len) {
+                const sub = _subscriptions[index];
+                if (isObject(sub)) {
+                    try {
+                        sub.unsubscribe();
+                    }
+                    catch (e) {
+                        errors = errors || [];
+                        if (e instanceof UnsubscriptionError) {
+                            errors = errors.concat(flattenUnsubscriptionErrors(e.errors));
+                        }
+                        else {
+                            errors.push(e);
+                        }
+                    }
+                }
+            }
+        }
+        if (errors) {
+            throw new UnsubscriptionError(errors);
+        }
+    }
+    add(teardown) {
+        let subscription = teardown;
+        if (!teardown) {
+            return Subscription.EMPTY;
+        }
+        switch (typeof teardown) {
+            case 'function':
+                subscription = new Subscription(teardown);
+            case 'object':
+                if (subscription === this || subscription.closed || typeof subscription.unsubscribe !== 'function') {
+                    return subscription;
+                }
+                else if (this.closed) {
+                    subscription.unsubscribe();
+                    return subscription;
+                }
+                else if (!(subscription instanceof Subscription)) {
+                    const tmp = subscription;
+                    subscription = new Subscription();
+                    subscription._subscriptions = [tmp];
+                }
+                break;
+            default: {
+                throw new Error('unrecognized teardown ' + teardown + ' added to Subscription.');
+            }
+        }
+        let { _parentOrParents } = subscription;
+        if (_parentOrParents === null) {
+            subscription._parentOrParents = this;
+        }
+        else if (_parentOrParents instanceof Subscription) {
+            if (_parentOrParents === this) {
+                return subscription;
+            }
+            subscription._parentOrParents = [_parentOrParents, this];
+        }
+        else if (_parentOrParents.indexOf(this) === -1) {
+            _parentOrParents.push(this);
+        }
+        else {
+            return subscription;
+        }
+        const subscriptions = this._subscriptions;
+        if (subscriptions === null) {
+            this._subscriptions = [subscription];
+        }
+        else {
+            subscriptions.push(subscription);
+        }
+        return subscription;
+    }
+    remove(subscription) {
+        const subscriptions = this._subscriptions;
+        if (subscriptions) {
+            const subscriptionIndex = subscriptions.indexOf(subscription);
+            if (subscriptionIndex !== -1) {
+                subscriptions.splice(subscriptionIndex, 1);
+            }
+        }
+    }
+}
+Subscription.EMPTY = (function (empty) {
+    empty.closed = true;
+    return empty;
+}(new Subscription()));
+function flattenUnsubscriptionErrors(errors) {
+    return errors.reduce((errs, err) => errs.concat((err instanceof UnsubscriptionError) ? err.errors : err), []);
+}
+//# sourceMappingURL=Subscription.js.map