Vue2-dragula can't support IE browser , and cause these errors.

[appliqiang]

[Vue warn]: Error in directive dragula inserted hook: "TypeError: 对象不支持“find”属性或方法"

[object Error]{description: "对象不支持“find”...", message: "对象不支持“find”...", name: "TypeError", number: -2146827850, stack: "TypeError: ..."}

[kristianmandrup]

I don't have IE and I don't read Chinese. You are welcome to debug and submit a patch with a PR.
Also, demo is missing :key on lists to work smoothly with Vue 2.2+

[razh]

@appliqiang You need an Array.prototype.find polyfill.

There are a few on npm, as well as this version on MDN:

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/find#Polyfill