feat: base

frontend/node_modules/computeds/out/computed.js

@@ -0,0 +1,21 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.computed = void 0;
+const tracker_1 = require("./tracker");
+const system_1 = require("./system");
+const dep_1 = require("./dep");
+function computed(getter) {
+    let oldValue;
+    const tracker = new tracker_1.Tracker(() => (0, system_1.trigger)(dep, 1 /* DirtyLevels.ComputedValueMaybeDirty */));
+    const fn = () => {
+        (0, system_1.track)(dep);
+        if (tracker.dirty
+            && !Object.is(oldValue, oldValue = tracker.track(() => getter(oldValue)))) {
+            (0, system_1.trigger)(dep, 2 /* DirtyLevels.ComputedValueDirty */);
+        }
+        return oldValue;
+    };
+    const dep = new dep_1.Dep(fn);
+    return fn;
+}
+exports.computed = computed;