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"TypeError: Reflect.getPrototypeOf called on non-object" with local plugins

See original GitHub issue

Hi,

I’m getting an error during the registration of this plugin with chart.js 3.4.1 and vue 2.6:

TypeError: Reflect.getPrototypeOf called on non-object

For the registration of the plugin I followed the doc here

You can replicate the issue with this sandbox

I’ve opened the issue here because I think that it depends on this plugin (but I’m not sure, correct me if I’im wrong) as If you comment line 9 and line 28 the error does not seems to appear

Issue Analytics

State:
Created 2 years ago
Comments:6 (4 by maintainers)

Top GitHub Comments

3reactions

kurklecommented, Jul 6, 2021

Making the chart non-reactive resolves the problem: https://codesandbox.io/s/headless-wave-p8jpi?file=/src/App.vue

0reactions

etimbergcommented, Jul 17, 2021

I did some digging. This is appears to be due to how Vue observes the chart object. I suspect this would occur with plugins registered globally as well. The error occurs when Vue is trying to observe Chart._plugins._init[6].options. The plugin has no scopes, and as a result this code calls Reflect.getPrototypeOf(undefined). A simple solution here might be to guard the scope passed in as const scope = scopes[0] || {} to ensure that no falsy values get passed.

getPrototypeOf() {
  return Reflect.getPrototypeOf(scopes[0]);
},

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