Amazon-cognito-identity-js: [RequireJS issue] - `TypeError: punycode.toASCII is not a function`

[mgoria]

After updating to latest aws-cognito-sdk.js version, which seems to "rely" on AWS SDK v2.3.14, I'm running into below error:

TypeError: punycode.toASCII is not a function

It seems to be an AWS SDK issue (ref. https://github.com/aws/aws-sdk-js/issues/999) that is fixed in v2.3.16.

Is there a way to rebuild aws-cognito-sdk.js with AWS SDK v2.3.16 or greater ?

[itrestian]

Let me look into this today.

[itrestian]

I updated to the newest version of the AWS SDK. Can you check?

[mgoria]

I've checked and unfortunately it doesn't work.

With aws-sdk-2.4.12.js it works but with latest aws-cognito-sdk.js it throws the same error (see attached screenshot)

[mojojr]

Seeing the same issue. Any ideas?

Thanks

[IveGotThePawa]

Same error with the SDK in my big projet. Works fine on a project with (almost) just the SDK included in the html page.

Seems something in my code is interfering with punycode, making it undefined. I didn't find what yet.

EDIT: Seem to be a race condition?

var punycode = require('punycode');

Seems to be evaluated before

punycode = {
    'version': '1.4.1',
    'ucs2': {
        'decode': ucs2decode,
        'encode': ucs2encode
    },
    'decode': decode,
    'encode': encode,
    'toASCII': toASCII,
    'toUnicode': toUnicode
};

This seems quite recent as an older SDK don't have this problem.

[AlexanderC]

Guys,

It turned out that the Punycode library can conflict with different bundle systems (FYI we're using Webpack).

I've managed to fix the bug by patching the aws-sdk-2.4.14.js sources (non minified!) at line 28126:

                module.exports = punycode;
                // if (
                //     typeof define == 'function' &&
                //     typeof define.amd == 'object' &&
                //     define.amd
                // ) {
                //     define('punycode', function() {
                //         return punycode;
                //     });
                // } else if (freeExports && freeModule) {
                //     if (module.exports == freeExports) {
                //         freeModule.exports = punycode;
                //     } else {
                //         for (key in punycode) {
                //             punycode.hasOwnProperty(key) && (freeExports[key] = punycode[key]);
                //         }
                //     }
                // } else {
                //     root.punycode = punycode;
                // }

[itrestian]

Thanks @AlexanderC!

Does this solve it for everyone?

[IveGotThePawa]

Yes, that fix works for me