Truffle Decoder cannot be imported in the browser

I think this has something to do with the way it’s being webpacked and published. It’s not outputting a module compatible with ES6 import statements. The following fails:

import Decoder from "@truffle/decoder";
console.log(Decoder) // undefined

If you change it to CommonJS require statements, then it works:

const Decoder = require("@truffle/decoder")
console.log(Decoder) // {ContractDecoder: ƒ ...}

But both of the above cases should work properly.

[haltman-at]

Another workaround would be to configure webpack to not attempt to import fs-extra, as mentioned here: https://github.com/jprichardson/node-fs-extra/issues/261

[haltman-at]

For now you can downgrade to the previous decoder version (4.1.0); you won’t lose much functionality (just some stuff involving internal function pointers which I don’t think you’re currently handling anyway). But yeah will have to do something about this…