feat: add isEqual to ValueRef

Author: Jack-Works

src/DOM/LiveSelector.ts

@@ -435,13 +435,6 @@ export class LiveSelector<T, SingleMode extends boolean = false> {
         if (this.isSingleMode) return (arr.filter(nonNull) as T[])[0] as any
         return (arr.filter(nonNull) as T[]) as any
     }
-    /**
-     * {@inheritdoc LiveSelector.evaluate}
-     * @deprecated Use `evaluate()` instead, it's shorter. Will removed at 0.6.0
-     */
-    evaluateOnce(): SingleMode extends true ? (T | undefined) : T[] {
-        return this.evaluate()
-    }
     //#endregion
     /**
      * Call this function to enhance the debug experience in the Chrome DevTools

src/util/ValueRef.spec.ts

@@ -27,6 +27,12 @@ describe('ValueRef', () => {
         ref.value = ref.value
         done()
     })
+    it('isEqual should work', done => {
+        const ref = new ValueRef({ a: 1 }, (a, b) => JSON.stringify(a) === JSON.stringify(b))
+        ref.addListener(() => done('bad call'))
+        ref.value = { a: 1 }
+        done()
+    })
     it('remove the listener', done => {
         const ref = new ValueRef(symb)
         const f = () => done('bad call')

src/util/ValueRef.ts

@@ -24,7 +24,7 @@ export class ValueRef<T> {
     /** Set current value */
     set value(newVal: T) {
         const oldVal = this._value
-        if (newVal === oldVal) return
+        if (this.isEqual(newVal, oldVal)) return
         this._value = newVal
         for (const fn of this.watcher) {
             try {
@@ -36,7 +36,7 @@ export class ValueRef<T> {
     }
     /** All watchers */
     private watcher = new Set<(newVal: T, oldVal: T) => void>()
-    constructor(private _value: T) {}
+    constructor(private _value: T, private isEqual: (a: T, b: T) => boolean = (a, b) => a === b) {}
     /**
      * Add a listener. This will return a remover.
      * @example