initial commit: scaffolding

1 files changed, 31 insertions, 0 deletions

diff --git a/node_modules/rxjs/dist/esm/internal/operators/withLatestFrom.js b/node_modules/rxjs/dist/esm/internal/operators/withLatestFrom.js
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+++ b/node_modules/rxjs/dist/esm/internal/operators/withLatestFrom.js
@@ -0,0 +1,31 @@
+import { operate } from '../util/lift';
+import { createOperatorSubscriber } from './OperatorSubscriber';
+import { innerFrom } from '../observable/innerFrom';
+import { identity } from '../util/identity';
+import { noop } from '../util/noop';
+import { popResultSelector } from '../util/args';
+export function withLatestFrom(...inputs) {
+    const project = popResultSelector(inputs);
+    return operate((source, subscriber) => {
+        const len = inputs.length;
+        const otherValues = new Array(len);
+        let hasValue = inputs.map(() => false);
+        let ready = false;
+        for (let i = 0; i < len; i++) {
+            innerFrom(inputs[i]).subscribe(createOperatorSubscriber(subscriber, (value) => {
+                otherValues[i] = value;
+                if (!ready && !hasValue[i]) {
+                    hasValue[i] = true;
+                    (ready = hasValue.every(identity)) && (hasValue = null);
+                }
+            }, noop));
+        }
+        source.subscribe(createOperatorSubscriber(subscriber, (value) => {
+            if (ready) {
+                const values = [value, ...otherValues];
+                subscriber.next(project ? project(...values) : values);
+            }
+        }));
+    });
+}
+//# sourceMappingURL=withLatestFrom.js.map
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