Breaking Changes

SDK from Version 0.3.0 to 0.4.0

Summary of Changes:

• New Methods:
  • poolAssetOnDestination, poolAssetOnDestinationWithHook, transfer, and transferWithHook replace the old getSolution and getCallSolution methods.
• Simplified API: Each method now has a focused purpose, making it easier to understand and use.
• Parameter Renaming: whitelistedSourceChains has been renamed to sourceChains for clarity.

1. Method Refactoring

Old API:

Previously, there were two primary methods:

• getSolution: Used for both balance aggregation and contract calls.
• getCallSolution: Focused on bridging with contract calls.

These methods were generalized, accepting complex and multifaceted parameters, which often led to confusion about the exact functionality.

New API:

The methods have been separated and simplified to offer more clarity and specialization. Now, there are four distinct methods:

1. poolAssetOnDestination:

   • Used to aggregate token balances from multiple chains without contract interaction.

2. poolAssetOnDestinationWithHook:

   • Used to aggregate balances and perform a contract call on the destination chain.

3. transfer:

   • Focuses on a single-hop token transfer from one chain to another, without any contract call.

4. transferWithHook:

   • Transfers tokens with an additional contract call on the destination chain.

Impact:

• Simpler API: Users no longer need to handle complex or overloaded methods like getSolution or getCallSolution. Now, they can choose the right method for their needs.

Example Change:

• Old usage (getSolution):

  sprinter.getSolution({
    account: "0xYourAddressHere",
    destinationChain: 11155111,
    token: "USDC",
    amount: 1000000,
    contractCall: {
      callData: "0xabcdef",
      contractAddress: "0xContractAddress",
      gasLimit: 21000,
    },
  });

• New usage (poolAssetOnDestinationWithHook):

  sprinter.poolAssetOnDestinationWithHook({
    account: "0xYourAddressHere",
    destinationChain: 11155111,
    token: "USDC",
    amount: 1000000,
    contractCall: {
      callData: "0xabcdef",
      contractAddress: "0xContractAddress",
      gasLimit: 21000,
    },
  });

2. Parameter Name Changes

Old API:

• whitelistedSourceChains: A parameter that allowed users to specify which source chains were eligible for the solution.

New API:

• sourceChains: The same functionality has been retained but with a simpler, cleaner name.

Impact:

• No change in functionality: The purpose of this parameter remains the same.
• Migration Tip: Users should simply update the parameter name in their code.

Example Change:

• Old usage (whitelistedSourceChains):

  sprinter.getSolution({
    account: "0xYourAddressHere",
    destinationChain: 11155111,
    token: "USDC",
    amount: 1000000,
    whitelistedSourceChains: [84532, 137],
  });

• New usage (sourceChains):

  sprinter.poolAssetOnDestination({
    account: "0xYourAddressHere",
    destinationChain: 11155111,
    token: "USDC",
    amount: 1000000,
    sourceChains: [84532, 137],
  });

---

React SDK Refactor: From Version 0.2.1 to 0.3.0

Summary of Changes:

• New Methods:
  • getTransfer, getTransferWithHook, getPoolAssetOnDestination, and getPoolAssetOnDestinationWithHook replace the old getSolution and getCallSolution methods.
• Parameter Structure: Methods now accept a single object as a parameter, instead of individual arguments.
• Parameter Renaming: whitelistedSourceChains has been renamed to sourceChains.
• SDK as Peer Dependency: The @chainsafe/sprinter-sdk is now a peer dependency, simplifying updates.

1. Method Refactoring

Old API:

Previously, there were two primary methods in the React SDK:

• getSolution: Used for both balance aggregation and contract calls.
• getCallSolution: Focused on bridging with contract calls.

These methods were generalized, requiring multiple parameters, leading to confusion about their exact purpose.

New API:

The methods have been split into specialized methods to clarify their purpose:

1. getPoolAssetOnDestination:

   • Handles balance aggregation from multiple chains without contract interaction.

2. getPoolAssetOnDestinationWithHook:

   • Handles balance aggregation from multiple chains with a contract call on the destination chain.

3. getTransfer:

   • Used for single-hop transfers between chains without any contract call.

4. getTransferWithHook:

   • Used for single-hop transfers with a contract call on the destination chain.

Impact:

• Simplified API: Users no longer need to manage overloaded methods. Instead, each method has a clear, focused purpose, reducing complexity.

Example Change:

• Old usage (getSolution):

  getSolution(account, destinationChain, token, amount, threshold, whitelistedSourceChains);

• New usage (getTransferWithHook):

  getTransferWithHook({
    account,
    destinationChain,
    token,
    amount,
    threshold,
    sourceChains,
  });

2. Parameter Structure Changes

Old API:

In previous versions, parameters were passed individually for each method:

getSolution(
  account: Address,
  destinationChain: ChainID,
  token: TokenSymbol,
  amount: number,
  threshold?: number,
  whitelistedSourceChains?: ChainID[]
)

New API:

Now, methods accept a single object as an argument (e.g., settings). This aligns with the SDK design, making it easier to manage and extend.

getTransfer({
  account,
  destinationChain,
  token,
  amount,
  threshold,
  sourceChains,
});

Impact:

• Migration Tip: Instead of passing individual parameters, pass a single object that encapsulates all the necessary values.

Example Change:

• Old Usage:

  getSolution(account, destinationChain, token, amount, threshold, whitelistedSourceChains);

• New Usage:

  getTransfer({
    account,
    destinationChain,
    token,
    amount,
    threshold,
    sourceChains,
  });

3. Parameter Renaming

Old API:

• whitelistedSourceChains: This parameter allowed users to specify the source chains for bridging.

New API:

• sourceChains: The functionality remains the same, but the name has been simplified for clarity.

Impact:

• No change in functionality: Users just need to update their code to use the new parameter name.

Example Change:

• Old usage:

  getSolution({
    account: "0xYourAddressHere",
    destinationChain: 11155111,
    token: "USDC",
    amount: 1000000,
    whitelistedSourceChains: [84532, 137],
  });

• New usage:

  getTransfer({
    account: "0xYourAddressHere",
    destinationChain: 11155111,
    token: "USDC",
    amount: 1000000,
    sourceChains: [84532, 137],
  });

4. SDK as Peer Dependency

Old Setup:

Previously, the React SDK bundled the @chainsafe/sprinter-sdk as a regular dependency. This meant that updating the SDK required updating the React SDK at the same time.

New Setup:

@chainsafe/sprinter-sdk is now a peer dependency, which allows independent updates to the SDK without needing to update the React SDK.

Impact:

• Migration Tip: Ensure that @chainsafe/sprinter-sdk is installed as a dependency in your project.

Example (package.json):

{
  "peerDependencies": {
    "@chainsafe/sprinter-sdk": "^0.4.0"
  }
}