[TypeError]: XDR Write Error: [object Object] is not a ScVal #1285

kalepail · 2024-04-17T15:49:39Z

What version are you using?

https://github.com/stellar/js-stellar-sdk/tree/cf-worker
(this is a fork of master with a custom axios adapter to work with Cloudflare Workers)

What did you do?

Tried to use the TS bindings to call a contract method.

What did you expect to see?

Success.

What did you see instead?

[TypeError]: XDR Write Error: [object Object] is not a ScVal

Extra info

Here's a simple repo showcasing the error
https://github.com/Colorglyph/colorglyph-viewer

The text was updated successfully, but these errors were encountered:

kalepail · 2024-04-17T15:51:42Z

Full unminified error

✘ [ERROR] a [TypeError]: XDR Write Error: [object Object] is not a ScVal

      at p.write
  (file:///Users/tylervanderhoeven/Desktop/Web/Colorglyph-2.0/colorglyph-viewer/node_modules/@stellar/js-xdr/dist/webpack:/XDR/src/union.js:85:13)
      at ve.write
  (file:///Users/tylervanderhoeven/Desktop/Web/Colorglyph-2.0/colorglyph-viewer/node_modules/@stellar/js-xdr/dist/webpack:/XDR/src/var-array.js:43:23)
      at p.write
  (file:///Users/tylervanderhoeven/Desktop/Web/Colorglyph-2.0/colorglyph-viewer/node_modules/@stellar/js-xdr/dist/webpack:/XDR/src/struct.js:31:12)
      at p.write
  (file:///Users/tylervanderhoeven/Desktop/Web/Colorglyph-2.0/colorglyph-viewer/node_modules/@stellar/js-xdr/dist/webpack:/XDR/src/union.js:88:21)
      at p.write
  (file:///Users/tylervanderhoeven/Desktop/Web/Colorglyph-2.0/colorglyph-viewer/node_modules/@stellar/js-xdr/dist/webpack:/XDR/src/struct.js:31:12)
      at p.write
  (file:///Users/tylervanderhoeven/Desktop/Web/Colorglyph-2.0/colorglyph-viewer/node_modules/@stellar/js-xdr/dist/webpack:/XDR/src/union.js:88:21)
      at p.write
  (file:///Users/tylervanderhoeven/Desktop/Web/Colorglyph-2.0/colorglyph-viewer/node_modules/@stellar/js-xdr/dist/webpack:/XDR/src/struct.js:31:12)
      at ve.write
  (file:///Users/tylervanderhoeven/Desktop/Web/Colorglyph-2.0/colorglyph-viewer/node_modules/@stellar/js-xdr/dist/webpack:/XDR/src/var-array.js:43:23)
      at p.write
  (file:///Users/tylervanderhoeven/Desktop/Web/Colorglyph-2.0/colorglyph-viewer/node_modules/@stellar/js-xdr/dist/webpack:/XDR/src/struct.js:31:12)
      at p.toXDR
  (file:///Users/tylervanderhoeven/Desktop/Web/Colorglyph-2.0/colorglyph-viewer/node_modules/@stellar/js-xdr/dist/webpack:/XDR/src/xdr-type.js:57:10)

kalepail · 2024-04-17T16:04:53Z

My best guess is there's a mix between using or bundling a client side / browser version of something with a server / node version of something and that toggle is correct some or even most of the time but in the Cloudflare edge environment it isn't and thus there's some type mismatch.

kalepail · 2024-04-17T16:06:09Z

I will say it's really strange to me that the stellar-sdk works while the TS bindings version, which uses the same stellar-sdk doesn't. That seems odd and possibly a good place to start poking around.

BlaineHeffron · 2024-05-01T12:23:45Z

I've been looking into this bug as well. I'm pretty new to the Stellar ecosystem but I figured I'd post my current findings in case someone with more familiarity with the xdr library might have some insight. I found that simply putting the Hello World sample contract hello method in a front end <script> tag triggers it if you are using the soroban-astro-template (ie following this guide ).

It works fine when the hello method is put in the front matter of the Astro page, ie when its run server side. When run client side, the error occurs due to the if (!(value instanceof this)) in union.js. It looks like the element it is trying to write extends Enum instead of Union. Perhaps something with the client environment is different in the way the transaction object is being parsed into XDR?

BlaineHeffron · 2024-05-07T19:20:38Z

Bug Reproduction Steps

Run commands:

mkdir xdr-write-error && cd xdr-write-error

soroban contract init . -w increment --frontend-template https://github.com/stellar/soroban-astro-template

cp .env.example .env

npm install

Open src/pages/index.astro
Locate the second --- line and add the following script just below it:

<script>
import helloWorld from "../contracts/hello_world";
const { result } = await helloWorld.hello({ to: "you" });
console.log(result);
</script>

Run the following command:

npm run dev

Navigate to http://localhost:4321/

janewang · 2024-05-07T20:20:50Z

Could be a sdk bug...

janewang · 2024-05-07T20:24:47Z

@Shaptic We are quite blocked on this. Would you be able to take a look in this or pair with @BlaineHeffron on this? Thanks in advance :)

Shaptic · 2024-05-07T22:08:36Z

There's likely a stellar-base somewhere that there shouldn't be, or an SDK version mismatch. Can you please give it another go with v12.0.0-rc2 to see if the issue persists?

kalepail · 2024-05-07T23:26:15Z

Just tried here: Colorglyph/colorglyph-viewer@ad6ecab
No dice.
If @BlaineHeffron has a more basic repro though that's likely a better place to test as I'm also combining the event source one with an axios patch all to work on CF

Shaptic · 2024-05-07T23:53:47Z

The astro template has outdated dependencies which might be causing this, but I can't find a similar issue in colorglyph 😕

I wonder if, for some reason, exporting the SDK as part of the generated client somehow creates a copy that conflicts with the built-ins.... or if this is another instance of this bug and that bridge needs to be crossed now.

kalepail · 2024-05-08T01:02:26Z

Updated the astro site with all the latest stuff
https://github.com/kalepail/xdr-write-error

You have to spin up a local docker network before running npm run dev.
Make sure you're running the latest p21 docker image.

docker run --rm -i \
    -p "8000:8000" \
    --name stellar \
    stellar/quickstart:testing \
    --local \
    --limits unlimited \
    --enable-soroban-rpc \
    --enable-soroban-diagnostic-events \
    --enable rpc,horizon

kalepail · 2024-05-08T01:05:12Z

kalepail · 2024-05-08T01:07:36Z

I'm also using the latest CLI version right from the main branch.
cargo install --git https://github.com/stellar/soroban-cli soroban-cli --features opt which currently is this commit 9bc48fd

kalepail · 2024-05-08T16:30:59Z

Another instance of this bug stellar/js-soroban-client#124

kalepail · 2024-05-08T17:36:19Z

@chadoh did we confirm this was fixed in the 12rc2? My tests indicated it did not

Shaptic · 2024-05-08T18:40:49Z

Probably an auto-close via GitHub, I'll reopen

chadoh · 2024-05-08T18:43:00Z

I think GitHub did that because I have this in the description:

Known limitations

Still haven't fixed #1285

Shaptic · 2024-05-08T18:44:11Z

me github, me description.find("fixed #") != -1, me close issue

Shaptic · 2024-05-09T20:50:03Z

I've opened stellar/js-xdr#122 as an attempt to patch this due to its urgency and our (my) inability to root cause this quickly, please give it a look!

BlaineHeffron · 2024-05-09T21:21:18Z

@Shaptic It still fails the new check. Uncaught TypeError: XDR Write Error: [object Object] is r2, not ScVal Apparently it is in the same spot as before (Union.js, checking the hello payload).

BlaineHeffron · 2024-05-09T21:28:22Z

Some more info, the JSON stringify value of what fails is {"_switch":{"name":"scvSymbol","value":15},"_arm":"sym","_armType":{"_maxLength":32},"_value":"you"}

The prototype is as follows for server build:

{
  constructor: class extends Union {},
  scvBool: function set(value) {
          return this.set(aSwitch, value);
        },
  scvVoid: function set(value) {
          return this.set(aSwitch, value);
        },
  scvError: function set(value) {
          return this.set(aSwitch, value);
        },
  scvU32: function set(value) {
          return this.set(aSwitch, value);
        },
  scvI32: function set(value) {
          return this.set(aSwitch, value);
        },
  scvU64: function set(value) {
          return this.set(aSwitch, value);
        },
  scvI64: function set(value) {
          return this.set(aSwitch, value);
        },
  scvTimepoint: function set(value) {
          return this.set(aSwitch, value);
        },
  scvDuration: function set(value) {
          return this.set(aSwitch, value);
        },
  scvU128: function set(value) {
          return this.set(aSwitch, value);
        },
  scvI128: function set(value) {
          return this.set(aSwitch, value);
        },
  scvU256: function set(value) {
          return this.set(aSwitch, value);
        },
  scvI256: function set(value) {
          return this.set(aSwitch, value);
        },
  scvBytes: function set(value) {
          return this.set(aSwitch, value);
        },
  scvString: function set(value) {
          return this.set(aSwitch, value);
        },
  scvSymbol: function set(value) {
          return this.set(aSwitch, value);
        },
  scvVec: function set(value) {
          return this.set(aSwitch, value);
        },
  scvMap: function set(value) {
          return this.set(aSwitch, value);
        },
  scvAddress: function set(value) {
          return this.set(aSwitch, value);
        },
  scvContractInstance: function set(value) {
          return this.set(aSwitch, value);
        },
  scvLedgerKeyContractInstance: function set(value) {
          return this.set(aSwitch, value);
        },
  scvLedgerKeyNonce: function set(value) {
          return this.set(aSwitch, value);
        },
  b: function get() {
            return this.get(armsName);
          },
  error: function get() {
            return this.get(armsName);
          },
  u32: function get() {
            return this.get(armsName);
          },
  i32: function get() {
            return this.get(armsName);
          },
  u64: function get() {
            return this.get(armsName);
          },
  i64: function get() {
            return this.get(armsName);
          },
  timepoint: function get() {
            return this.get(armsName);
          },
  duration: function get() {
            return this.get(armsName);
          },
  u128: function get() {
            return this.get(armsName);
          },
  i128: function get() {
            return this.get(armsName);
          },
  u256: function get() {
            return this.get(armsName);
          },
  i256: function get() {
            return this.get(armsName);
          },
  bytes: function get() {
            return this.get(armsName);
          },
  str: function get() {
            return this.get(armsName);
          },
  sym: function get() {
            return this.get(armsName);
          },
  vec: function get() {
            return this.get(armsName);
          },
  map: function get() {
            return this.get(armsName);
          },
  address: function get() {
            return this.get(armsName);
          },
  nonceKey: function get() {
            return this.get(armsName);
          },
  instance: function get() {
            return this.get(armsName);
          },
}

The client version (webpack build) prototype

{
  constructor: class extends X {
                },
  scvBool: function(t6) {
                      return this.set(e6, t6);
                    },
  scvVoid: function(t6) {
                      return this.set(e6, t6);
                    },
  scvError: function(t6) {
                      return this.set(e6, t6);
                    },
  scvU32: function(t6) {
                      return this.set(e6, t6);
                    },
  scvI32: function(t6) {
                      return this.set(e6, t6);
                    },
  scvU64: function(t6) {
                      return this.set(e6, t6);
                    },
  scvI64: function(t6) {
                      return this.set(e6, t6);
                    },
  scvTimepoint: function(t6) {
                      return this.set(e6, t6);
                    },
  scvDuration: function(t6) {
                      return this.set(e6, t6);
                    },
  scvU128: function(t6) {
                      return this.set(e6, t6);
                    },
  scvI128: function(t6) {
                      return this.set(e6, t6);
                    },
  scvU256: function(t6) {
                      return this.set(e6, t6);
                    },
  scvI256: function(t6) {
                      return this.set(e6, t6);
                    },
  scvBytes: function(t6) {
                      return this.set(e6, t6);
                    },
  scvString: function(t6) {
                      return this.set(e6, t6);
                    },
  scvSymbol: function(t6) {
                      return this.set(e6, t6);
                    },
  scvVec: function(t6) {
                      return this.set(e6, t6);
                    },
  scvMap: function(t6) {
                      return this.set(e6, t6);
                    },
  scvAddress: function(t6) {
                      return this.set(e6, t6);
                    },
  scvContractInstance: function(t6) {
                      return this.set(e6, t6);
                    },
  scvLedgerKeyContractInstance: function(t6) {
                      return this.set(e6, t6);
                    },
  scvLedgerKeyNonce: function(t6) {
                      return this.set(e6, t6);
                    },
  b: function() {
                      return this.get(t6);
                    },
  error: function() {
                      return this.get(t6);
                    },
  u32: function() {
                      return this.get(t6);
                    },
  i32: function() {
                      return this.get(t6);
                    },
  u64: function() {
                      return this.get(t6);
                    },
  i64: function() {
                      return this.get(t6);
                    },
  timepoint: function() {
                      return this.get(t6);
                    },
  duration: function() {
                      return this.get(t6);
                    },
  u128: function() {
                      return this.get(t6);
                    },
  i128: function() {
                      return this.get(t6);
                    },
  u256: function() {
                      return this.get(t6);
                    },
  i256: function() {
                      return this.get(t6);
                    },
  bytes: function() {
                      return this.get(t6);
                    },
  str: function() {
                      return this.get(t6);
                    },
  sym: function() {
                      return this.get(t6);
                    },
  vec: function() {
                      return this.get(t6);
                    },
  map: function() {
                      return this.get(t6);
                    },
  address: function() {
                      return this.get(t6);
                    },
  nonceKey: function() {
                      return this.get(t6);
                    },
  instance: function() {
                      return this.get(t6);
                    },
}

Note that X is Enum

These are from my notes so they aren't from your PR on js-xdr.

BlaineHeffron · 2024-05-09T21:35:29Z

I also checked the logic around line 150 of union.js. I printed out statements regarding which class it decided on for the children. These were identical in both builds. I ultimately determined the problem isn't within js-xdr because I used the server build of js-xdr and the error still occurred.

Shaptic · 2024-05-09T22:35:09Z

Great notes, thank you 🙏

I think if we can figure out where the heck r2 is coming from (in the error message, which is the constructor name of the value getting passed to Union::write), we might make progress 🕵️

BlaineHeffron · 2024-05-10T00:43:40Z

Here is the json stringify and prototype with the new js-xdr code:

value is {"_switch":{"name":"scvSymbol","value":15},"_arm":"sym","_armType":{"_maxLength":32},"_value":"you"} union.js:95:14
prototype is {
  constructor: class extends $ {
                },
  scvBool: function(t6) {
                      return this.set(e6, t6);
                    },
  scvVoid: function(t6) {
                      return this.set(e6, t6);
                    },
  scvError: function(t6) {
                      return this.set(e6, t6);
                    },
  scvU32: function(t6) {
                      return this.set(e6, t6);
                    },
  scvI32: function(t6) {
                      return this.set(e6, t6);
                    },
  scvU64: function(t6) {
                      return this.set(e6, t6);
                    },
  scvI64: function(t6) {
                      return this.set(e6, t6);
                    },
  scvTimepoint: function(t6) {
                      return this.set(e6, t6);
                    },
  scvDuration: function(t6) {
                      return this.set(e6, t6);
                    },
  scvU128: function(t6) {
                      return this.set(e6, t6);
                    },
  scvI128: function(t6) {
                      return this.set(e6, t6);
                    },
  scvU256: function(t6) {
                      return this.set(e6, t6);
                    },
  scvI256: function(t6) {
                      return this.set(e6, t6);
                    },
  scvBytes: function(t6) {
                      return this.set(e6, t6);
                    },
  scvString: function(t6) {
                      return this.set(e6, t6);
                    },
  scvSymbol: function(t6) {
                      return this.set(e6, t6);
                    },
  scvVec: function(t6) {
                      return this.set(e6, t6);
                    },
  scvMap: function(t6) {
                      return this.set(e6, t6);
                    },
  scvAddress: function(t6) {
                      return this.set(e6, t6);
                    },
  scvContractInstance: function(t6) {
                      return this.set(e6, t6);
                    },
  scvLedgerKeyContractInstance: function(t6) {
                      return this.set(e6, t6);
                    },
  scvLedgerKeyNonce: function(t6) {
                      return this.set(e6, t6);
                    },
  b: function() {
                      return this.get(t6);
                    },
  error: function() {
                      return this.get(t6);
                    },
  u32: function() {
                      return this.get(t6);
                    },
  i32: function() {
                      return this.get(t6);
                    },
  u64: function() {
                      return this.get(t6);
                    },
  i64: function() {
                      return this.get(t6);
                    },
  timepoint: function() {
                      return this.get(t6);
                    },
  duration: function() {
                      return this.get(t6);
                    },
  u128: function() {
                      return this.get(t6);
                    },
  i128: function() {
                      return this.get(t6);
                    },
  u256: function() {
                      return this.get(t6);
                    },
  i256: function() {
                      return this.get(t6);
                    },
  bytes: function() {
                      return this.get(t6);
                    },
  str: function() {
                      return this.get(t6);
                    },
  sym: function() {
                      return this.get(t6);
                    },
  vec: function() {
                      return this.get(t6);
                    },
  map: function() {
                      return this.get(t6);
                    },
  address: function() {
                      return this.get(t6);
                    },
  nonceKey: function() {
                      return this.get(t6);
                    },
  instance: function() {
                      return this.get(t6);
                    },
} union.js:96:14
Uncaught TypeError: XDR Write Error: [object Object] is r2, not ScVal
    n errors.js:3
    write union.js:97
    write var-array.js:43
    write struct.js:31
    write union.js:103
    write struct.js:31
    write union.js:103
    write struct.js:31
    write var-array.js:43
    write struct.js:31
    toXDR xdr-type.js:57
    toXDR xdr-type.js:12
    toEnvelope transaction.js:303
    toXDR transaction_base.js:244
    _callee13$ server.js:416
    tryCatch server.js:24
    node_modules @stellar_stellar-sdk_lib_contract_client_index__js.js:34771
    node_modules @stellar_stellar-sdk_lib_contract_client_index__js.js:34711
    asyncGeneratorStep server.js:25
    _next server.js:26
    node_modules @stellar_stellar-sdk_lib_contract_client_index__js.js:34954
    node_modules @stellar_stellar-sdk_lib_contract_client_index__js.js:34946
    _simulateTransaction server.js:429
    _callee12$ server.js:396
    tryCatch server.js:24
    node_modules @stellar_stellar-sdk_lib_contract_client_index__js.js:34771
    node_modules @stellar_stellar-sdk_lib_contract_client_index__js.js:34711
    asyncGeneratorStep server.js:25
    _next server.js:26
    node_modules @stellar_stellar-sdk_lib_contract_client_index__js.js:34954
    node_modules @stellar_stellar-sdk_lib_contract_client_index__js.js:34946
    simulateTransaction server.js:404
    _callee$ assembled_transaction.js:61
    tryCatch assembled_transaction.js:33
    node_modules @stellar_stellar-sdk_lib_contract_client_index__js.js:48129
    node_modules @stellar_stellar-sdk_lib_contract_client_index__js.js:48069
    asyncGeneratorStep assembled_transaction.js:34
    _next assembled_transaction.js:35
    node_modules @stellar_stellar-sdk_lib_contract_client_index__js.js:48312
    node_modules @stellar_stellar-sdk_lib_contract_client_index__js.js:48304
    _callee7$ assembled_transaction.js:440
    tryCatch assembled_transaction.js:33
    node_modules @stellar_stellar-sdk_lib_contract_client_index__js.js:48129
    node_modules @stellar_stellar-sdk_lib_contract_client_index__js.js:48069
    asyncGeneratorStep assembled_transaction.js:34
    _next assembled_transaction.js:35
    promise callback*asyncGeneratorStep assembled_transaction.js:34
    _next assembled_transaction.js:35
    node_modules @stellar_stellar-sdk_lib_contract_client_index__js.js:48312
    node_modules @stellar_stellar-sdk_lib_contract_client_index__js.js:48304
    build assembled_transaction.js:450
    assembleTransaction2 client.js:39
    <anonymous> index.astro:11
errors.js:3:4

BlaineHeffron · 2024-05-10T01:19:07Z

I printed out the prototypes in var-array, union, and struct and everything is identical to the server build up until that scvSymbol.

This is very odd, in the old build I could trace the symbol back to it being a child of Enum. But in this case the $ is stumping me. So I added some debug text in the Enum class, and it seems to be called 'k' in this build. So either I was mistaken before and it wasn't a child of Enum or something in some changes caused its inheritance to change...

janewang · 2024-05-14T20:12:44Z

Fixes stellar/js-stellar-sdk#962

kalepail added the bug Something isn't working label Apr 17, 2024

chadoh assigned BlaineHeffron May 3, 2024

chadoh mentioned this issue May 6, 2024

feat: update TS Bindings stellar-sdk dep to 12rc2 #1314

Merged

chadoh closed this as completed in #1314 May 8, 2024

Shaptic reopened this May 8, 2024

Shaptic mentioned this issue May 9, 2024

Add a robustier instanceof alternative to allow cross-package compatibility. stellar/js-xdr#122

Merged

janewang assigned chadoh and unassigned BlaineHeffron May 14, 2024

chadoh mentioned this issue May 14, 2024

feat(ts-bindings): use upcoming stellar-sdk@12rc3 #1326

Merged

chadoh closed this as completed in #1326 May 16, 2024

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[TypeError]: XDR Write Error: [object Object] is not a ScVal #1285

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[TypeError]: XDR Write Error: [object Object] is not a ScVal #1285

[TypeError]: XDR Write Error: [object Object] is not a ScVal #1285

Comments

kalepail commented Apr 17, 2024

What version are you using?

What did you do?

What did you expect to see?

What did you see instead?

Extra info

kalepail commented Apr 17, 2024

kalepail commented Apr 17, 2024

kalepail commented Apr 17, 2024

BlaineHeffron commented May 1, 2024

BlaineHeffron commented May 7, 2024 • edited Loading

Bug Reproduction Steps

janewang commented May 7, 2024

janewang commented May 7, 2024

Shaptic commented May 7, 2024

kalepail commented May 7, 2024

Shaptic commented May 7, 2024

kalepail commented May 8, 2024

kalepail commented May 8, 2024

kalepail commented May 8, 2024

kalepail commented May 8, 2024

kalepail commented May 8, 2024

Shaptic commented May 8, 2024

chadoh commented May 8, 2024

Shaptic commented May 8, 2024

Shaptic commented May 9, 2024 • edited Loading

BlaineHeffron commented May 9, 2024

BlaineHeffron commented May 9, 2024

BlaineHeffron commented May 9, 2024 • edited Loading

Shaptic commented May 9, 2024

BlaineHeffron commented May 10, 2024

BlaineHeffron commented May 10, 2024

janewang commented May 14, 2024

BlaineHeffron commented May 7, 2024 •

edited

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Shaptic commented May 9, 2024 •

edited

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BlaineHeffron commented May 9, 2024 •

edited

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