Unable to successfully import data from vue using vue-chartjs

Encountering an error in my Vue 2 project after compilation:

Failed to compile.

./node_modules/vue-chartjs/dist/index.js 85:11-26
"export 'defineComponent' was not found in 'vue'

The specific line in the above file triggering this issue is:

import { defineComponent, shallowRef, ref, watch, onMounted, onBeforeUnmount, toRaw, h, isProxy } from 'vue';

All imports like these are causing the same error. The problem arose after upgrading vue-chartjs from version 3.5.1 to version 4.1.1 (it worked fine before). Seeking insights into the potential cause of this.

The dependencies versions being used are:

- "chart.js": "^3.8.0"
- "vue": "^2.6.14"
- "vue-chartjs": "^4.1.1"

Unfortunately, unable to provide a code snippet as it's occurring only in a work project. When tested on a clean project, compilation is successful. There seems to be limited information available online regarding Vue issues, so any ideas or suggestions would be greatly appreciated.

If you have any thoughts on what could potentially be causing this, please share. Even the smallest suggestion could prove helpful, as I've been struggling with this for days without finding a solution. Upgrading chart.js seemed like a simple task, but it has turned into a lengthy ordeal, quite frustrating!

javascriptvue.jsvuejs2chart.jsvue-chartjs

Answer №1

Are you attempting to import the library in this manner?

import { Bar } from 'vue-chartjs'

This approach may not work for you if you are using Vue2. To utilize the Vue wrapper with Vue2, it is necessary to import from 'vue-chartjs/legacy'. This version provides support for Vue V2 and should allow your application to compile correctly.

The correct import statement should be:

import { Bar } from 'vue-chartjs/legacy'

Refer to their readme for more information.

Answer №2

The issue typically arises from using a version of Vue3. According to this explanation: "export 'default' (imported as 'Vue') was not found in 'vue'

If we look at the release notes for vue-chartjs, we can see that v4.0.0 included a significant change by switching to Vue3: https://github.com/apertureless/vue-chartjs/releases/tag/v4.0.0

This is why version 4 is causing issues. If you are using Vue2, it is recommended to stick with v3.5.1 (August 22, 2020) or an earlier version.

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