Decoupled Starknet.js - Experimental Braavos wallet 0.0.2

[PhilippeR26]

@avimak @tabaktoni @ivpavici

Linked to #194

My test DAPP has been updated for the experimental Braavos wallet v0.0.2, and is available here : https://cairo1-js-git-testbraavos002-philipper26.vercel.app/
The results of my tests :

1. subscription to events :

It's working fine for subscription / unsubscription.
At change of network, both account and network events are well occurring.

But I have still unexpected account change events, at each new block.

2. wallet_getPermissions :

It works.

• Return accounts string, in an array of one item.
• If the user declines the permission, the response is an empty array.

3. wallet_requestAccounts :

It works.
Returns an array of hex string ; just use first element.

Still not a fan of this type of response ; I think it's not a good idea to use an array to hold just one account address. It encourages abusing this accounts array to pass arbitrary data. It's a way for security issue.

4. wallet_watchAsset :

It works. The result is true.

The optional parameters are useless, as they are automatically recovered from the blockchain. Whatever you provide, only the blockchain data are used.

• If the address is not an ERC20, the result is false.
• If the token is already displayed, the result is true.

If the user decline the request, the function throw an error. Impossible to differentiate with an internal browser problem.

5. wallet_addStarknetChain :

Not supported by Braavos wallet 002.

6. wallet_switchStarknetChain :

Not supported by Braavos wallet 002.

7. wallet_requestChainId :

It works.

• response is string encoded of SN_MAIN, SN_GOERLI or SN_SEPOLIA.

8. wallet_deploymentData :

This new function is always throwing an error, even just after starknet_addDeployAccountTransaction.

9. starknet_addInvokeTransaction :

It works.

If the user declines to sign, the function throw an error. Impossible to differentiate with an internal browser problem.

10. starknet_addDeclareTransaction :

The problem encountered in 001 is still there : #196 (comment)

11. starknet_addDeployAccountTransaction :

It works.

• The address of deployment is not the one expected with the universal deployer. Ex :

const decClassHash = "0x2bfd9564754d9b4a326da62b2f22b8fea7bbeffd62da4fcaea986c323b7aeb"; // OZ cairo v2.1.0
const starkKeyPub = "0x03cb804773b6a237db952b1d4b651a90ee08651fbe74b5b05f8fabb2529acb45";
// calculate address
const OZaccountConstructorCallData = CallData.compile([starkKeyPub]);
const OZcontractAddress = hash.calculateContractAddressFromHash(starkKeyPub, decClassHash, OZaccountConstructorCallData, 0);

Expected address is 0x360ccaecfd9fb321de0b70da56bc9b96510b75a6ee21e8e9b547f4710ad007f
But the function is returning :

transaction_hash: 0x1aca7fffb34c41d28ad365de6d353111c96a520120275935296f30ca3b012f9 
contract_address:[0x4e892bb64e39cef7363151cfb2aae45216ea3ea6c4200da6ac9c37cf9e14dac]

• The response type is not conform to AddDeployAccountTransactionResult.contract_address: FELT

request starknet_addDeployAccountTransaction resp = {
    transaction_hash: '0x1aca7fffb34c41d28ad365de6d353111c96a520120275935296f30ca3b012f9', contract_address: Array(1)}
        contract_address: Array(1)
            0: "0x4e892bb64e39cef7363151cfb2aae45216ea3ea6c4200da6ac9c37cf9e14dac"
        length: 1
        [[Prototype]]: Array(0)
        transaction_hash: "0x1aca7fffb34c41d28ad365de6d353111c96a520120275935296f30ca3b012f9"[[Prototype]]: Object , 
    crash = false

The address is in fact an array. Same comment than wallet_requestAccounts.

• If the user decline the request, the function throw an error. Impossible to differentiate with an internal browser problem.

12. starknet_signTypedData :

It works.

• It returns an array of hex string.

If the user declines to sign, the function throw an error. Impossible to differentiate with an internal browser problem.

13. starknet_supportedSpecs :

It works.

• The response is an array of strings. Each string is the version of a supported starknet API version. Includes only the 2 main digits ; example : 0.5