React Native: undefined is not a function (evaluating 'Namespace.extend(Type)')

[vanekt]

protobuf.js version: <6.1.0>

How to reproduce

Just import protobuf.js in ReactNative:

import Protobuf from 'protobufjs'

After rebuild the app it shows:

undefined is not a function (evaluating 'Namespace.extend(Type)')

<unknown>
type.js:8

loadModuleImplementation
require.js:170

guardedLoadModule
require.js:122

_require
require.js:106

<unknown>
namespace.js:9

loadModuleImplementation
require.js:170

guardedLoadModule
require.js:122

_require
require.js:106

<unknown>
root.js:4

loadModuleImplementation
require.js:170

guardedLoadModule
require.js:122

_require
require.js:106

<unknown>
parse.js:5

loadModuleImplementation
require.js:170

guardedLoadModule
require.js:122

_require
require.js:106

<unknown>
index.js:78

loadModuleImplementation
require.js:170

guardedLoadModule
require.js:122

_require
require.js:106

<unknown>
index.android.js:4

loadModuleImplementation
require.js:170

guardedLoadModule
require.js:122

_require
require.js:106

global code
require-0.js:1

[dcodeIO]

Relevant line

Unfortunately, I have practically no experience with React Native, so I have to guess:

1. The sources make heavy use of cyclic require calls, which might be causing errors in non-node environments
2. This might be an issue with the extend implementation

One possible workaround could be to use a prebuilt bundle from dist/. These are made for browser environments, though, and do not really support require / import.

If you have additional information or an idea, let me know!

[dcodeIO]

This now moved the extend implementation around which might or might not help with your issue, depending on what exactly is failing where. Please give it a try.

If this doesn't resolve your issue, yet, a more general approach could still be examined.

[vanekt]

Unfortunately this does not solve the problem

[dcodeIO]

Please try again. If it raises another error now, please paste it here.

[vanekt]

It works! Great, thank you!

[dcodeIO]

Feel free to reopen if necessary!

[develand]

Can anyone confirm if this works with react-native?

[vanekt]

The 6.5.0 version works fine with React Native