When using requirejs and vue.js together, the error message "Vue is not defined" may be encountered

My code snippet looks like this:

<script type="text/javascript" src="../../node_modules/requirejs/require.js"></script>
<script type="text/javascript" src="../../node_modules/vue/dist/vue.js"></script>
<script>console.log(Vue)</script>

This results in the following error:

Uncaught ReferenceError: Vue is not defined

To resolve this issue, I found that the following code works correctly:

<script type="text/javascript" src="../../node_modules/vue/dist/vue.js"></script>
<script>console.log(Vue)</script>

In addition, this alternative code also functions properly:

<script type="text/javascript" src="../../node_modules/requirejs/require.js"></script>
<script>
  requirejs(["../../node_modules/vue/dist/vue.js"], (Vue) => {
    window.Vue = Vue;
    console.log(Vue)
  })
</script>

I am curious why using requirejs causes window.Vue to be null. Is there a way to import Vue with requirejs that behaves the same as importing Vue without requirejs?

Answer №1

One solution I discovered is to import vue.js before requirejs.

<script type="text/javascript" src="../../node_modules/vue/dist/vue.js"></script>
<script type="text/javascript" src="../../node_modules/requirejs/require.js"></script>
<script>
  console.log(Vue)
</script>

It seems that requirejs may be overriding a function that vue init requires, causing window.Vue not to initialize properly.

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