Uncaught TypeError: Cannot read properties of undefined (reading 'prototype') at dd-gridstack.js:369:23

[mengyu987]

An error is displayed after the VUE project is packaged
Uncaught TypeError: Cannot read properties of undefined (reading 'prototype') at dd-gridstack.js:139

[adumesny]

you don't say what rev you are using, so the line number don't line up, but I assume the first one, and what you include.

GridStack.prototype._setupAcceptWidget = ...

https://github.com/gridstack/gridstack.js#extend-library
should work. closing.

[mengyu987]

Some files cannot be found due to a bug after Vite2.0 is built，
led to Uncaught TypeError: Cannot read properties of undefined (reading 'prototype')
thank you for your reply
拴Q

[leiyaguang]

same problem

[mengyu987]

同样的问题

你用的是vite来构建嘛，我将我的vite2升级为vite3就没问题了，我想可能是vite的问题

[leiyaguang]

是用vite2构建的，我更换了导入的地址后可以了。

// @ts-ignore
import GridStack from 'gridstack/dist/es5/gridstack-all';

[mengyu987]

这样也可以，不过升级下vite也可以，2的bug太多了

[adumesny]

read the doc - https://github.com/gridstack/gridstack.js#include - wrong include way (gridstack-all.js is only packaged for html include). use

import { GridStack } from 'gridstack';

[mengyu987]

阅读文档 - https://github.com/gridstack/gridstack.js#include - 错误的包含方式（gridstack-all.js 仅打包用于 html 包含）。利用

import { GridStack } from 'gridstack';

This error is generated after referencing builds like this in VitE2 at GridStack ^6.0.1.

[adumesny]

and please write content in english as I cannot translate it. You need to provide a running example showing it is a lib issue as I don't have bandwidth to debug other people issues.

[Ninita1]

I had the same problem. Locally everything works fine, but in production I had this ""Potentially unhandled rejection [3] TypeError: Cannot read properties of undefined (reading 'prototype')" error.
After some investigation I found that the problem was with the gridstack dependency.

I replaced import from "gridstack" to "gridstack/dist/es5/gridstack-all" and now it works fine in production.

[adumesny]

ha thanks for the hint... I see those methods I extracted out to different file (from when I supported static smaller bundle) and could remove that now..