crypto is not defined

[its-dibo]

I got this error

 ReferenceError: crypto is not defined
0|mobarmegeen-backend  |     at hmac (node_modules/aws4fetch/dist/aws4fetch.cjs.js:223:21)
0|mobarmegeen-backend  |     at AwsV4Signer.signature (node_modules/aws4fetch/dist/aws4fetch.cjs.js:185:27)
0|mobarmegeen-backend  |     at AwsV4Signer.authHeader (node_modules/aws4fetch/dist/aws4fetch.cjs.js:177:34)
0|mobarmegeen-backend  |     at AwsV4Signer.sign (node_modules/aws4fetch/dist/aws4fetch.cjs.js:164:52)
0|mobarmegeen-backend  |     at AwsClient.sign (node_modules/aws4fetch/dist/aws4fetch.cjs.js:56:57)
0|mobarmegeen-backend  |     at AwsClient.fetch (node_modules/aws4fetch/dist/aws4fetch.cjs.js:69:40)
0|mobarmegeen-backend  |     at FilesCloudflareService.save (/apps/src/api/files/fs-providers/files.cloudflare.service.ts:54:8)
0|mobarmegeen-backend  |     at /apps/src/api/posts/posts.service.ts:135:10
0|mobarmegeen-backend  |     at matcher (/apps/src/api/files/files.utils.ts:47:14)
0|mobarmegeen-backend  |     at replaceAsync (/apps/src/api/files/files.utils.ts:90:9)
0|mobarmegeen-backend  |     at extractInlineData (/apps/src/api/files/files.utils.ts:52:7)
0|mobarmegeen-backend  |     at PostsService.saveFiles (/apps/src/api/posts/posts.service.ts:121:29)
0|mobarmegeen-backend  |     at PostsService.updateById (/apps/src/api/posts/posts.service.ts:45:17)
0|mobarmegeen-backend  |     at PostsController.update (/apps/src/api/posts/posts.controller.ts:104:25)
0|mobarmegeen-backend  |     at node_modules/@nestjs/core/router/router-execution-context.js:38:29
0|mobarmegeen-backend  |     at processTicksAndRejections (node:internal/process/task_queues:95:5)
0|mobarmegeen-backend  |     at async node_modules/@nestjs/core/router/router-execution-context.js:46:28
0|mobarmegeen-backend  |     at async Object.<anonymous> (node_modules/@nestjs/core/router/router-proxy.js:9:17)

the code:

let client = new AwsClient({
      accessKeyId: ***,
      secretAccessKey: ***!,
    });

let baseUrl =  `https://${accountId}.r2.cloudflarestorage.com`

client
      .fetch(`${baseUrl}/file.txt`, {
        method: 'put',
        body: 'test',
      })

I don't use crypto anywhere in my code
even installing crypto doesn't help npm i crypto

[mhart]

Where are you running this? As the README says, this is "for environments that support fetch and SubtleCrypto"

[its-dibo]

Where are you running this? As the README says, this is "for environments that support fetch and SubtleCrypto"

in a Nodejs app which supports fetch

[mhart]

Which Node.js version? Which OS? Sent from Gmail Mobile

…

On Mon, 29 Jan 2024 at 7:30 pm, Dibo ***@***.***> wrote: AwsClient in a Nodejs app which supports fetch — Reply to this email directly, view it on GitHub <#61 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AACZ2QDN2NCCD2BFITRRBOTYQ5MY5AVCNFSM6AAAAABCBBRG2GVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMYTSMJUGE4TMNBZGI> . You are receiving this because you commented.Message ID: ***@***.***>

[its-dibo]

Which Node.js version? Which OS?

Node v20
OS: ubuntu 22

[mhart]

Not sure what's wrong with your env – it's defined for me:

$ node
Welcome to Node.js v20.11.0.
Type ".help" for more information.
> typeof crypto
'object'

[sino1641]

HI
I tried adding const crypto = require('crypto'); to the top of the code then it works.
I am day1 on nodejs using fedora with node output:

$ node
Welcome to Node.js v18.18.2.
Type ".help" for more information.
> typeof crypto
'object'

May it wouldbe of help.

[its-dibo]

I tried adding const crypto = require('crypto');

this wo'nt work here because aws4fetch is an external package and we cannot modify its code base

[zdmc23]

@its-dibo , try adding the Vercel Edge Runtime Polyfill (https://edge-runtime.vercel.app/packages/ponyfill) package:

pnpm add @edge-runtime/ponyfill

then to use it:

import { crypto } from '@edge-runtime/ponyfill'

[luizzappa]

In case anyone is having this problem running Nuxt locally, you can create a plugin as follows:

export default defineNuxtPlugin(() => {
  const config = useRuntimeConfig();

  if (process.server && config.public.env.toLocaleLowerCase() !== 'prod') {
    const crypto = require('crypto');
    global.crypto = crypto;
  }
})

[1rwilson]

I tried adding const crypto = require('crypto');

I am experiencing the same issue on both my local node.js environment and also when deploying on google cloud functions:

Simply adding const crypto = require('crypto'); to the beginning of aws4fetch.cjs.js fixes the problem on my local environment. But I can't do this when deploying to GCF. Could this one line be added as per aws4.js ?

[duinness]

I hit this error while using vercel ai sdk and tracked the error to aws4fetch.
I resolved the issue by moving my service from Node 18 to Node 20.17.0

[mhart]

Yeah, as the README says, this project is for modern JS environments. The https://github.com/mhart/aws4 project supports all Node.js environments. Sent from Gmail Mobile

…

On Thu, 20 Feb 2025 at 8:03 am, Dennis Anderson ***@***.***> wrote: I hit this error while using vercel ai sdk and tracked the error to aws4fetch. I resolved the issue by moving my service from Node 18 to Node 20.17.0 — Reply to this email directly, view it on GitHub <#61 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AACZ2QAUSRFAH4HIJ7G7KDT2QTWSFAVCNFSM6AAAAABXPFGEHCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMNRZG42TGNBSHA> . You are receiving this because you commented.Message ID: ***@***.***> [image: duinness]*duinness* left a comment (mhart/aws4fetch#61) <#61 (comment)> I hit this error while using vercel ai sdk and tracked the error to aws4fetch. I resolved the issue by moving my service from Node 18 to Node 20.17.0 — Reply to this email directly, view it on GitHub <#61 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AACZ2QAUSRFAH4HIJ7G7KDT2QTWSFAVCNFSM6AAAAABXPFGEHCVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDMNRZG42TGNBSHA> . You are receiving this because you commented.Message ID: ***@***.***>