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node_modules/rxjs/_esm5/internal/observable/fromEventPattern.js

@@ -0,0 +1,32 @@
+/** PURE_IMPORTS_START _Observable,_util_isArray,_util_isFunction,_operators_map PURE_IMPORTS_END */
+import { Observable } from '../Observable';
+import { isArray } from '../util/isArray';
+import { isFunction } from '../util/isFunction';
+import { map } from '../operators/map';
+export function fromEventPattern(addHandler, removeHandler, resultSelector) {
+    if (resultSelector) {
+        return fromEventPattern(addHandler, removeHandler).pipe(map(function (args) { return isArray(args) ? resultSelector.apply(void 0, args) : resultSelector(args); }));
+    }
+    return new Observable(function (subscriber) {
+        var handler = function () {
+            var e = [];
+            for (var _i = 0; _i < arguments.length; _i++) {
+                e[_i] = arguments[_i];
+            }
+            return subscriber.next(e.length === 1 ? e[0] : e);
+        };
+        var retValue;
+        try {
+            retValue = addHandler(handler);
+        }
+        catch (err) {
+            subscriber.error(err);
+            return undefined;
+        }
+        if (!isFunction(removeHandler)) {
+            return undefined;
+        }
+        return function () { return removeHandler(handler, retValue); };
+    });
+}
+//# sourceMappingURL=fromEventPattern.js.map