Optimize directive work

src/directive.ts

@@ -7,13 +7,18 @@ const masks = new WeakMap<HTMLInputElement, MaskInput>()
 
 export const vMaska: MaskaDirective = (el, binding) => {
   const input = el instanceof HTMLInputElement ? el : el.querySelector('input')
+  const opts = { ...(binding.arg as MaskInputOptions) } ?? {}
+
   if (input == null) return
 
-  if (masks.get(input) != null) {
+  const existed = masks.get(input)
-    masks.get(input)?.destroy()
+  if (existed != null) {
-  }
+    if (!existed.needUpdate(input, opts)) {
+      return
+    }
 
-  const opts = { ...(binding.arg as MaskInputOptions) } ?? {}
+    existed.destroy()
+  }
 
   if (binding.value != null) {
     const binded = binding.value
@@ -32,4 +37,11 @@ export const vMaska: MaskaDirective = (el, binding) => {
   }
 
   masks.set(input, new MaskInput(input, opts))
+
+  // check initial value for v-model
+  setTimeout(() => {
+    if (input.value !== '') {
+      input.dispatchEvent(new InputEvent('input'))
+    }
+  })
 }

src/mask-input.ts

@@ -22,12 +22,16 @@ export class MaskInput {
     target: string | NodeListOf<HTMLInputElement> | HTMLInputElement,
     readonly options: MaskInputOptions = {}
   ) {
-    const { onMaska, preProcess, postProcess, ...opts } = options
-
     if (typeof target === 'string') {
-      this.init(Array.from(document.querySelectorAll(target)), opts)
+      this.init(
+        Array.from(document.querySelectorAll(target)),
+        this.getMaskOpts(options)
+      )
     } else {
-      this.init('length' in target ? Array.from(target) : [target], opts)
+      this.init(
+        'length' in target ? Array.from(target) : [target],
+        this.getMaskOpts(options)
+      )
     }
   }
 
@@ -39,6 +43,19 @@ export class MaskInput {
     this.items.clear()
   }
 
+  needUpdate (input: HTMLInputElement, opts: MaskInputOptions): boolean {
+    const mask = this.items.get(input) as Mask
+    const maskNew = new Mask(parseInput(input, this.getMaskOpts(opts)))
+
+    return JSON.stringify(mask.opts) !== JSON.stringify(maskNew.opts)
+  }
+
+  private getMaskOpts (options: MaskInputOptions): MaskOptions {
+    const { onMaska, preProcess, postProcess, ...opts } = options
+
+    return opts
+  }
+
   private init (inputs: HTMLInputElement[], defaults: MaskOptions): void {
     for (const input of inputs) {
       const mask = new Mask(parseInput(input, defaults))

test/components/Custom.vue

@@ -0,0 +1,13 @@
+<script setup lang="ts">
+import { ref } from 'vue'
+
+import { vMaska } from '../../src'
+import CustomInput from './CustomInput.vue'
+
+const value = ref('')
+</script>
+
+<template>
+  <CustomInput v-maska data-maska="#-#" data-maska-eager v-model="value" />
+  <div>{{ value }}</div>
+</template>

test/components/CustomInput.vue

@@ -0,0 +1,11 @@
+<script setup>
+defineProps(['modelValue'])
+defineEmits(['update:modelValue'])
+</script>
+
+<template>
+  <input
+    :value="modelValue"
+    @input="$emit('update:modelValue', $event.target.value)"
+  />
+</template>

test/components/Model.vue

@@ -0,0 +1,11 @@
+<script setup lang="ts">
+import { ref } from 'vue'
+import { vMaska } from '../../src'
+
+const value = ref('123')
+</script>
+
+<template>
+  <input v-maska data-maska="#-#" data-maska-eager v-model="value" />
+  <div>{{ value }}</div>
+</template>

test/components/Multiple.vue

@@ -0,0 +1,44 @@
+<script setup lang="ts">
+import { reactive, ref } from 'vue'
+import { vMaska } from '../../src'
+
+const emit = defineEmits(['mask1', 'mask2'])
+
+const isEager = ref(false)
+
+const value1 = ref('123')
+const value2 = ref('321')
+
+const options = reactive({
+  eager: isEager,
+  onMaska: () => null
+})
+
+const onMaska1 = () => {
+  emit('mask1')
+}
+
+const onMaska2 = () => {
+  emit('mask2')
+}
+</script>
+
+<template>
+  <input id="checkbox" type="checkbox" v-model="isEager" />
+  <input
+    id="input1"
+    v-maska:[options]
+    data-maska="#-#"
+    v-model="value1"
+    @maska="onMaska1"
+  />
+  <input
+    id="input2"
+    v-maska
+    data-maska="#-#"
+    v-model="value2"
+    @maska="onMaska2"
+  />
+  <div id="value1">{{ value1 }}</div>
+  <div id="value2">{{ value2 }}</div>
+</template>

test/directive.test.ts

@@ -8,10 +8,13 @@ import BindUnmasked from './components/BindUnmasked.vue'
 import Callbacks from './components/Callbacks.vue'
 import Completed from './components/Completed.vue'
 import Config from './components/Config.vue'
+import Custom from './components/Custom.vue'
 import DataAttr from './components/DataAttr.vue'
 import Dynamic from './components/Dynamic.vue'
 import Events from './components/Events.vue'
 import Hooks from './components/Hooks.vue'
+import Model from './components/Model.vue'
+import Multiple from './components/Multiple.vue'
 import Options from './components/Options.vue'
 import Parent from './components/Parent.vue'
 import Simple from './components/Simple.vue'
@@ -103,6 +106,67 @@ test('bind completed', async () => {
   expect(wrapper.get('div').element.textContent).toBe('Completed')
 })
 
+test('v-model', async () => {
+  const wrapper = mount(Model)
+  const input = wrapper.get('input')
+
+  await new Promise((r) => setTimeout(r))
+
+  expect(input.element.value).toBe('1-2')
+  expect(wrapper.get('div').element.textContent).toBe('1-2')
+
+  await input.setValue('1')
+  expect(input.element.value).toBe('1-')
+  expect(wrapper.get('div').element.textContent).toBe('1-')
+
+  await input.setValue('123')
+  expect(input.element.value).toBe('1-2')
+  expect(wrapper.get('div').element.textContent).toBe('1-2')
+})
+
+test('custom component', async () => {
+  const wrapper = mount(Custom)
+  const input = wrapper.get('input')
+
+  await input.setValue('1')
+  expect(input.element.value).toBe('1-')
+  expect(wrapper.get('div').element.textContent).toBe('1-')
+
+  await input.setValue('123')
+  expect(input.element.value).toBe('1-2')
+  expect(wrapper.get('div').element.textContent).toBe('1-2')
+})
+
+test('multiple inputs', async () => {
+  const wrapper = mount(Multiple)
+  const input = wrapper.get<HTMLInputElement>('#input1')
+  const checkbox = wrapper.get<HTMLInputElement>('#checkbox')
+
+  await new Promise((r) => setTimeout(r))
+
+  expect(wrapper.get('#value1').element.textContent).toBe('1-2')
+  expect(wrapper.get('#value2').element.textContent).toBe('3-2')
+
+  expect(wrapper.emitted()).toHaveProperty('mask1')
+  expect(wrapper.emitted()).toHaveProperty('mask2')
+  expect(wrapper.emitted('mask1')).toHaveLength(1)
+  expect(wrapper.emitted('mask2')).toHaveLength(1)
+
+  await input.setValue('1')
+  expect(input.element.value).toBe('1')
+  expect(wrapper.get('#value1').element.textContent).toBe('1')
+  expect(wrapper.emitted()).toHaveProperty('mask1')
+  expect(wrapper.emitted('mask1')).toHaveLength(2)
+  expect(wrapper.emitted('mask2')).toHaveLength(1)
+
+  await checkbox.setValue()
+  expect(checkbox.element).toBeChecked()
+
+  expect(input.element.value).toBe('1-')
+  expect(wrapper.emitted('mask1')).toHaveLength(3)
+  expect(wrapper.emitted('mask2')).toHaveLength(1)
+})
+
 test('config and bind', async () => {
   const wrapper = mount(Config)
   const input = wrapper.get('input')