wip: value()

packages/observer/src/value.ts

@@ -0,0 +1,27 @@
+import { track, trigger } from './effect'
+import { OperationTypes } from './operations'
+
+const knownValues = new WeakSet()
+
+export interface Value<T> {
+  value: T
+}
+
+export function value<T>(raw: T): Value<T> {
+  const v = {
+    get value() {
+      track(v, OperationTypes.GET, '')
+      return raw
+    },
+    set value(newVal) {
+      raw = newVal
+      trigger(v, OperationTypes.SET, '')
+    }
+  }
+  knownValues.add(v)
+  return v
+}
+
+export function isValue(v: any): boolean {
+  return knownValues.has(v)
+}