What is the method for exporting a default element from within the script setup block in Vue 3?

Question

What is the method for exporting a default element from within the script setup block in Vue 3?

It appears that the export default statement is not functioning properly within <script setup>.

For example, exporting it in a file called test.vue:

<template>
  <div id="test" class="test">

  </div>
</template>


<script setup>
const x = 5

export default {
    x
}
</script>


<style scoped lang="scss">
</style>

and then trying to import it into another file named blog.vue:

<script setup>
import x from './test'
</script>

This results in a cascade of errors:

app.js?id=3b6365f542826af47b926162803b3ef6:37396 Uncaught Error: Module build failed (from ./node_modules/vue-loader/dist/index.js):
TypeError: Cannot read properties of null (reading 'content')
  ... (error message continues)

javascript vue.js vuejs3 vue-script-setup

Answer 1

Answer №1

To start, you can either create a new file with the extension *.d.ts similar to vue.d.ts, or simply insert the following script into the existing vite-env.d.ts file (which is generated by Vite).

declare module '*.vue' {
  import type { DefineComponent } from 'vue';
  // eslint-disable-next-line @typescript-eslint/no-explicit-any
  const component: DefineComponent<Record<string, unknown>, Record<string, unknown>, any>;
  export default component;
}

After that, you will be able to utilize script setup> without the need for defining two separate script tags.

Answer 2

To start, you can either create a new file with the extension *.d.ts similar to vue.d.ts, or simply insert the following script into the existing vite-env.d.ts file (which is generated by Vite).

declare module '*.vue' {
  import type { DefineComponent } from 'vue';
  // eslint-disable-next-line @typescript-eslint/no-explicit-any
  const component: DefineComponent<Record<string, unknown>, Record<string, unknown>, any>;
  export default component;
}

After that, you will be able to utilize script setup> without the need for defining two separate script tags.

Answer 3

Answer №2

This question doesn't seem to have been answered yet, so I did some research on the same issue:

You can simply use a regular block of code alongside the Vue block and insert your export within it.

For more information, check out this useful documentation: https://vuejs.org/api/sfc-script-setup.html#usage-alongside-normal-script

Answer 4

This question doesn't seem to have been answered yet, so I did some research on the same issue:

You can simply use a regular block of code alongside the Vue block and insert your export within it.

For more information, check out this useful documentation: https://vuejs.org/api/sfc-script-setup.html#usage-alongside-normal-script

Answer 5

Answer №3

Perhaps you could consider utilizing this approach.

<script>
import { defineComponent } from 'vue'
import { ref, reactive, computed } from 'vue'
export default defineComponent({
  name: 'xxxComponent',
})
</script>
<script setup>
    const x = ref(5)
    // computed
    const computedVariable = computed(() => {
        return object.variable
    })
    // methods
    const updateModalCookieInitialOpenMethod = (val) => {
        cookies.updateCookieSettings(val)
        cookies.updateModalCookieInitialOpen()
    }
</script>

Answer 6

Perhaps you could consider utilizing this approach.

<script>
import { defineComponent } from 'vue'
import { ref, reactive, computed } from 'vue'
export default defineComponent({
  name: 'xxxComponent',
})
</script>
<script setup>
    const x = ref(5)
    // computed
    const computedVariable = computed(() => {
        return object.variable
    })
    // methods
    const updateModalCookieInitialOpenMethod = (val) => {
        cookies.updateCookieSettings(val)
        cookies.updateModalCookieInitialOpen()
    }
</script>

Answer 7

Answer №4

If you're facing a similar issue, the solution lies in utilizing the defineOptions method. In my case, I encountered a problem that required me to modify the setup script as shown below:

<script>
import AnotherLayout from "../layouts/Another.vue"
export default {
layout: AnotherLayout
}
</script>

However, with the setup script, you'll need to adopt the following syntax:

<script setup>
import AnotherLayout from "../layouts/Another.vue"
defineOptions({
  layout: Another
})
</script>

For further details, refer to the VueJS Docs at https://vuejs.org/api/sfc-script-setup.html#defineoptions

Answer 8

If you're facing a similar issue, the solution lies in utilizing the defineOptions method. In my case, I encountered a problem that required me to modify the setup script as shown below:

<script>
import AnotherLayout from "../layouts/Another.vue"
export default {
layout: AnotherLayout
}
</script>

However, with the setup script, you'll need to adopt the following syntax:

<script setup>
import AnotherLayout from "../layouts/Another.vue"
defineOptions({
  layout: Another
})
</script>

For further details, refer to the VueJS Docs at https://vuejs.org/api/sfc-script-setup.html#defineoptions

Answer 9

Answer №5

'The use of script setup in components is initially closed' - as stated in their official documentation.

To expose, you must use defineExpose()

<script setup>

const x = 5;

defineExpose({
  x
})
</script>

https://vuejs.org/api/sfc-script-setup.html#defineexpose

Answer 10

'The use of script setup in components is initially closed' - as stated in their official documentation.

To expose, you must use defineExpose()

<script setup>

const x = 5;

defineExpose({
  x
})
</script>

https://vuejs.org/api/sfc-script-setup.html#defineexpose

Answer 11

Answer №6

Hey there, after observing others, I decided to try it out and it worked well for me. Simply include name properties next to script setup and your component will be exported.

<script setup name="Greet">
</script>

This is essentially equivalent to

 export const MyComponent = {
 name: "MyComponent" // I'm not entirely convinced about this part}

Therefore, you can simply insert your code in the parent component like so.

<script setup>
 import Greet from './components/Greet.vue';
</script>

<template>
  <Greet/>
</template>

Answer 12

Hey there, after observing others, I decided to try it out and it worked well for me. Simply include name properties next to script setup and your component will be exported.

<script setup name="Greet">
</script>

This is essentially equivalent to

 export const MyComponent = {
 name: "MyComponent" // I'm not entirely convinced about this part}

Therefore, you can simply insert your code in the parent component like so.

<script setup>
 import Greet from './components/Greet.vue';
</script>

<template>
  <Greet/>
</template>

What is the method for exporting a default element from within the script setup block in Vue 3?

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

Answer №6

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