feat: bridge adapter

[ankitboghra]

No description provided.

[Copilot]

Pull Request Overview

This PR introduces a new bridge adapter feature to enable custom ERC20 token bridging functionality. The implementation provides an alternative bridging mechanism through a dedicated bridge adapter contract interface.

Key changes:

• Adds new BridgeAdapter class with custom ERC20 bridging capabilities
• Introduces BridgeTokenParams interface for bridge adapter operations
• Integrates bridge adapter functionality into existing ERC20 class

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
src/types/bridge.ts	Adds BridgeTokenParams interface for bridge adapter parameters
src/lxly/tokens/erc20.ts	Integrates bridgeToken method using the new bridge adapter
src/lxly/index.ts	Exports the new BridgeAdapter class
src/lxly/bridge/index.ts	Creates centralized export point for bridge functionality
src/lxly/bridge/bridge-adapter.ts	Implements the main BridgeAdapter class with token bridging logic
src/lxly/bridge/abi/index.ts	Centralizes bridge-related ABI exports
src/lxly/bridge/abi/bridge-adapter.ts	Defines the bridge adapter contract ABI

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[Copilot]

The amount parameter is validated as a string but directly converted to BigInt without error handling. Consider adding validation to ensure the string is a valid numeric format before conversion, or handle potential conversion errors.

Suggested change

	BigInt(params.amount),
	(() => {
	// Ensure params.amount is a valid non-negative integer string
	if (!/^\d+$/.test(params.amount)) {
	throw new Error(`Amount must be a valid non-negative integer string, got: "${params.amount}"`);
	}
	try {
	return BigInt(params.amount);
	} catch (e) {
	throw new Error(`Failed to convert amount to BigInt: ${e instanceof Error ? e.message : String(e)}`);
	}
	})(),

[Copilot]

The ABI defines destinationNetworkId as uint32 but the TypeScript interface uses number. Consider using a more specific type or adding validation to ensure the number fits within uint32 range (0 to 4,294,967,295).