Replace Vue's mixin function

Question

Replace Vue's mixin function

Is it possible to overwrite one of npm's mixins that is used within a component with a local mixin?

I have a component from an npm package located in

node_modules/somePackageName/components/footer.vue

which uses a mixin from

node_modules/somePackageName/mixins/popup.js

The popup.js file contains the following method:

methods: {
  setPopupActiveStatus (val, blur = true) {
    const isVisible = false
  }
},

And I am trying to override this behavior from my App.vue file where I use the footer.vue component like so:

methods: {
  setPopupActiveStatus (val, blur = true) {
    const isVisible = true
  }
},

However, my attempt to override the mixin is not working as intended.

==== UPDATE ====

Here is how I managed to resolve my issue based on the solution provided by @Estradiaz:

https://i.sstatic.net/w7TWR.png

javascript vue.js

Answer 1

Answer №1

When merging mixin and component options:

When a mixin and the component both have overlapping options, they will be combined using specific strategies:

Data objects are merged recursively, giving priority to the component's data in case of conflicts.

Hook functions with the same name are merged into an array so that all of them are executed. Mixin hooks precede the component's own hooks.

Methods, Components, and Directives are merged into the same object. Conflicting keys in these objects prioritize the component's options.

Here is an example of a method provided by both a component and a mixin:

var mixin = {
  methods: {
    foo: function () {
      console.log('Mixin Message')
    },
  }
}

var vm = new Vue({
  mixins: [mixin],
  methods: {
    foo: function () {
      console.log('Component Message')
    },
  }
})

vm.foo() // => "Component Message"

And here is an example on codesandbox

Therefore, you can effectively "override" the mixin by simply providing a method with the same name on the component as it will take precedence

Answer 2

When merging mixin and component options:

When a mixin and the component both have overlapping options, they will be combined using specific strategies:

Data objects are merged recursively, giving priority to the component's data in case of conflicts.

Hook functions with the same name are merged into an array so that all of them are executed. Mixin hooks precede the component's own hooks.

Methods, Components, and Directives are merged into the same object. Conflicting keys in these objects prioritize the component's options.

Here is an example of a method provided by both a component and a mixin:

var mixin = {
  methods: {
    foo: function () {
      console.log('Mixin Message')
    },
  }
}

var vm = new Vue({
  mixins: [mixin],
  methods: {
    foo: function () {
      console.log('Component Message')
    },
  }
})

vm.foo() // => "Component Message"

And here is an example on codesandbox

Therefore, you can effectively "override" the mixin by simply providing a method with the same name on the component as it will take precedence

Answer 3

Answer №2

Expanding Vue Functionality

If you're looking to enhance your current Vue component with a custom method, you can achieve this using the Vue.extend function. Vue simplifies the process of cloning/extending components by utilizing the extends option:

Option/ Composition - extends

import SourceComponent from 'node_modules/somePackageName/components/footer.vue'
export default {
   name: "override",
   extends: SourceComponent,
   methods: {
      thatActualMethodBehaviour(){}
   }
}

Vue.extend

// This can be either a Function or an Object
import SourceComponent from 'node_modules/somePackageName/components/footer.vue'
if(typeof SourceComponent === 'function'){
  export default SourceComponent.extend({
      methods: {thatActualMethodBehaviour(){}}
  })
} else {
  export default Vue.extend(SourceComponent).extend({
      methods: {thatActualMethodBehaviour(){}}
  })  
}

Option/ Composition - mixins

// Mixins must be an Object
import SourceComponentOption from 'node_modules/somePackageName/components/footer.vue'
if(typeof SourceComponent !== 'function'){
  export default Vue.extend({
      mixins: [SourceComponentOption],
      methods: {thatActualMethodBehaviour(){}}
  })
}

The Path to Expansion

import SourceComponentOption from 'node_modules/somePackageName/components/footer.vue'
export default Object.assign({}, SourceComponentOption, {methods: Object.assign({}, SourceComponentOption.methods, {thatActualMethodBehaviour: function(){}}))

TypeScript Integration: vue-property-decorator

import {Vue, Component} from 'vue-property-decorator'
import SourceComponent from 'node_modules/somePackageName/components/footer.vue'
@Component<CustomComponent>({...hooks})
export default class CustomComponent extends SourceComponent{
   methods: thatActualMethodBehaviour(){}
}

Answer 4

Expanding Vue Functionality

If you're looking to enhance your current Vue component with a custom method, you can achieve this using the Vue.extend function. Vue simplifies the process of cloning/extending components by utilizing the extends option:

Option/ Composition - extends

import SourceComponent from 'node_modules/somePackageName/components/footer.vue'
export default {
   name: "override",
   extends: SourceComponent,
   methods: {
      thatActualMethodBehaviour(){}
   }
}

Vue.extend

// This can be either a Function or an Object
import SourceComponent from 'node_modules/somePackageName/components/footer.vue'
if(typeof SourceComponent === 'function'){
  export default SourceComponent.extend({
      methods: {thatActualMethodBehaviour(){}}
  })
} else {
  export default Vue.extend(SourceComponent).extend({
      methods: {thatActualMethodBehaviour(){}}
  })  
}

Option/ Composition - mixins

// Mixins must be an Object
import SourceComponentOption from 'node_modules/somePackageName/components/footer.vue'
if(typeof SourceComponent !== 'function'){
  export default Vue.extend({
      mixins: [SourceComponentOption],
      methods: {thatActualMethodBehaviour(){}}
  })
}

The Path to Expansion

import SourceComponentOption from 'node_modules/somePackageName/components/footer.vue'
export default Object.assign({}, SourceComponentOption, {methods: Object.assign({}, SourceComponentOption.methods, {thatActualMethodBehaviour: function(){}}))

TypeScript Integration: vue-property-decorator

import {Vue, Component} from 'vue-property-decorator'
import SourceComponent from 'node_modules/somePackageName/components/footer.vue'
@Component<CustomComponent>({...hooks})
export default class CustomComponent extends SourceComponent{
   methods: thatActualMethodBehaviour(){}
}

Replace Vue's mixin function

Answer №1

When merging mixin and component options:

Answer №2

Expanding Vue Functionality

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