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node_modules/rxjs/_esm2015/internal/operators/pluck.js

@@ -0,0 +1,25 @@
+import { map } from './map';
+export function pluck(...properties) {
+    const length = properties.length;
+    if (length === 0) {
+        throw new Error('list of properties cannot be empty.');
+    }
+    return (source) => map(plucker(properties, length))(source);
+}
+function plucker(props, length) {
+    const mapper = (x) => {
+        let currentProp = x;
+        for (let i = 0; i < length; i++) {
+            const p = currentProp != null ? currentProp[props[i]] : undefined;
+            if (p !== void 0) {
+                currentProp = p;
+            }
+            else {
+                return undefined;
+            }
+        }
+        return currentProp;
+    };
+    return mapper;
+}
+//# sourceMappingURL=pluck.js.map