npm package: @holdstation/worldchain-ethers-v5
Description: lamlv2305: $#folder:packages help me config yarn workspace, so i want #file:multicall3.ts  can import interface from package @holdstation/worldchain-sdk at #folder:core
Latest version: 4.0.34

lamlv2305: $#folder:packages help me config yarn workspace, so i want #file:multicall3.ts  can import interface from package @holdstation/worldchain-sdk at #folder:core 

GitHub Copilot: To configure Yarn workspaces so that your package in ether-v5 can import interfaces from `@holdstation/worldchain-sdk` in core, follow these steps:

1. **Create a root package.json** (if you don't have one) at worldchain-sdk with a `workspaces` field:

````json
{
  "private": true,
  "workspaces": [
    "packages/*"
  ]
}
````

2. **Update `@holdstation/worldchain-sdk` package name**  
Your package.json already has `"name": "@holdstation/worldchain-sdk"`, which is correct.

3. **Add dependency in `ether-v5`**  
In package.json, add `@holdstation/worldchain-sdk` as a dependency:

````json
{
  // ...existing code...
  "dependencies": {
    "@holdstation/worldchain-sdk": "*"
    // ...other dependencies...
  }
  // ...existing code...
}
````

4. **Install dependencies**  
From your monorepo root, run:
```sh
yarn install
```

5. **Import interfaces**  
Now, in your code (like in packages/ether-v5/src/multicall3.ts), you can import from `@holdstation/worldchain-sdk` as you are already doing.

---

**Summary:**  
- Ensure the root package.json has a `workspaces` field.
- Reference `@holdstation/worldchain-sdk` in your dependent package's package.json.
- Run `yarn install` at the root.
- Use imports as normal.

Let me know if you need help with a specific step!

lamlv2305: do i need to build core before run ?

GitHub Copilot: Yes, you typically need to build `@holdstation/worldchain-sdk` before running or building `@holdstation/worldchain-ethers-v5`, especially if `core` is written in TypeScript or needs a build step to generate output files (like `dist/` or `lib/`).

**Why?**  
When you import from `@holdstation/worldchain-sdk`, your code expects the compiled output (e.g., `.js` and `.d.ts` files) to be present. If you haven't built `core`, those files may not exist, causing import errors.

**Best practice:**  
- Build `core` first.
- Then build or run `ether-v5`.

**Tip:**  
You can automate this with a root-level script using [Yarn workspaces](https://classic.yarnpkg.com/en/docs/workspaces/) or [Lerna](https://lerna.js.org/), or use [yarn workspaces run](https://classic.yarnpkg.com/en/docs/cli/workspaces/) to build all packages in the correct order:

```sh
yarn workspaces run build
```

This will run the `build` script in all your packages, respecting dependency order.

lamlv2305: how to let this package using @holdstation/worldchain-sdk

I'm using yarn workspace

GitHub Copilot: To use `@holdstation/worldchain-sdk` in your `@holdstation/worldchain-ethers-v5` package with Yarn workspaces, follow these steps:

1. **Monorepo structure**  
Your folders should look like:
```
/worldchain-sdk/
  package.json         // <-- root, with "workspaces"
  /packages/
    /core/             // <-- @holdstation/worldchain-sdk
      package.json
    /ether-v5/         // <-- @holdstation/worldchain-ethers-v5
      package.json
```

2. **Root package.json**  
Make sure your root package.json has:
````json
{
  "private": true,
  "workspaces": [
    "packages/*"
  ]
}
````

3. **Dependency in `ether-v5`**  
Your package.json already has:
```json
"dependencies": {
  "@holdstation/worldchain-sdk": "*",
  "ethers": "^5.8.0"
}
```
This is correct.

4. **Install dependencies**  
From the root of your monorepo, run:
```sh
yarn install
```
Yarn will link `@holdstation/worldchain-sdk` from core into node_modules of `ether-v5`.

5. **Build order**  
If `core` needs to be built (e.g., TypeScript), build it first:
```sh
cd packages/core
yarn build
```
Then build `ether-v5`:
```sh
cd ../ether-v5
yarn build
```
Or, from the root, run:
```sh
yarn workspaces run build
```
This will build all packages in dependency order.

6. **Import in code**  
Now you can import from `@holdstation/worldchain-sdk` in your TypeScript files:
```typescript
import { SomeInterface } from "@holdstation/worldchain-sdk";
```

---

**Summary:**  
- Use Yarn workspaces in the root.
- Add `@holdstation/worldchain-sdk` as a dependency.
- Run `yarn install` at the root.
- Build `core` before `ether-v5`.
- Import as normal in your code.

Let me know if you need help with a specific step!

lamlv2305:   decodeFunctionResult(functionFragment: string, data: string): Result {
    const iface = new ethers.utils.Interface([functionFragment]);
    return iface.decodeFunctionResult(functionFragment, data);
  }

  does it correct ?

GitHub Copilot: Your implementation is **almost correct** for simple use cases, but it has a subtle issue:

- `ethers.utils.Interface([functionFragment])` expects an ABI fragment (like a function signature), but when you call `decodeFunctionResult(functionFragment, data)`, the first argument should be the **function name** (not the full fragment/signature).

**If `functionFragment` is a full signature (e.g., `"function balanceOf(address) view returns (uint256)"`),** you should extract the function name (e.g., `"balanceOf"`) when calling `decodeFunctionResult`.

**Example fix:**
````typescript
decodeFunctionResult(functionFragment: string, data: string): Result {
  const iface = new ethers.utils.Interface([functionFragment]);
  // Extract function name from the fragment
  const functionName = iface.fragments[0].name;
  return iface.decodeFunctionResult(functionName, data);
}
````

**Summary:**  
- If you pass a full function fragment, extract the function name for decoding.
- If you already pass just the function name, your original code is fine.

**Recommendation:**  
Use the fix above for robustness.

lamlv2305: review encodeFunctionData 

GitHub Copilot: Your `encodeFunctionData` implementation works if `functionFragment` is a full function fragment (e.g., `"function balanceOf(address) view returns (uint256)"`).  
However, `iface.encodeFunctionData` expects the **function name** (e.g., `"balanceOf"`) as the first argument, not the full fragment.

**Current code:**
````typescript
encodeFunctionData(functionFragment: string, values?: any[]): string {
  const iface = new ethers.utils.Interface([functionFragment]);
  return iface.encodeFunctionData(functionFragment, values);
}
````

**Issue:**  
If you pass the full fragment as both the ABI and the function name, it will throw an error.

**Recommended fix:**  
Extract the function name from the fragment, similar to your `decodeFunctionResult`:

````typescript
encodeFunctionData(functionFragment: string, values?: any[]): string {
  const iface = new ethers.utils.Interface([functionFragment]);
  const functionName = iface.fragments[0].name;
  return iface.encodeFunctionData(functionName, values);
}
````

**Summary:**  
- Extract the function name from the fragment before calling `encodeFunctionData`.
- This makes your method robust for full function fragments.

lamlv2305: make `encodeFunctionData` for viem please 

GitHub Copilot: ````typescript
import { encodeFunctionData as viemEncodeFunctionData, parseAbi } from 'viem'

export class ViemClient implements Client {
  // ...existing code...

  encodeFunctionData(functionFragment: string, values?: any[]): string {
    const abi = parseAbi([functionFragment]);
    const functionName = abi[0].name;
    return viemEncodeFunctionData({
      abi,
      functionName,
      args: values ?? [],
    });
  }

  // ...existing code...
}
````

**Notes:**
- This uses `parseAbi` to parse the function fragment and extract the function name.
- Uses `viem`'s `encodeFunctionData` utility for encoding.
- Assumes `functionFragment` is a full function signature (e.g., `"function balanceOf(address) view returns (uint256)"`).

lamlv2305: you are liar

Property 'name' does not exist on type 'never'

Argument of type '{ abi: never; functionName: any; args: any[]; }' is not assignable to parameter of type 'never'.ts(2345)

GitHub Copilot: Thank you for pointing out the error. The issue is that `parseAbi([functionFragment])` returns `never[]` if the input is not a valid ABI fragment or if the types are not inferred correctly.

**How to fix:**

You should use the correct ABI type for `parseAbi` and ensure the fragment is a valid function signature.  
Here’s a robust way to implement `encodeFunctionData` for Viem:

````typescript
import { AbiFunction, parseAbi, encodeFunctionData as viemEncodeFunctionData } from 'viem'

encodeFunctionData(functionFragment: string, values?: any[]): string {
  // parseAbi returns Abi[], so we cast it to AbiFunction[]
  const abi = parseAbi([functionFragment]) as AbiFunction[];
  if (!abi.length || !abi[0].name) {
    throw new Error('Invalid function fragment');
  }
  const functionName = abi[0].name;
  return viemEncodeFunctionData({
    abi,
    functionName,
    args: values ?? [],
  });
}
````

**Key points:**
- Cast the result of `parseAbi` to `AbiFunction[]`.
- Check that the ABI and function name exist.
- Now TypeScript will recognize the `name` property and the types will match.

Let me know if you need further help!

lamlv2305: how about decode ?

GitHub Copilot: Here’s how you can implement `decodeFunctionResult` for Viem using `parseAbi` and `decodeFunctionResult` from `viem`:

````typescript
import { AbiFunction, parseAbi, decodeFunctionResult as viemDecodeFunctionResult } from 'viem'

decodeFunctionResult(abi: string[], functionFragment: string, data: string): Result {
  const parsedAbi = parseAbi(abi) as AbiFunction[];
  if (!parsedAbi.length || !parsedAbi[0].name) {
    throw new Error('Invalid function fragment');
  }
  const functionName = parsedAbi[0].name;
  return viemDecodeFunctionResult({
    abi: parsedAbi,
    functionName,
    data,
  });
}
````

**Notes:**
- This assumes `Result` matches the return type of `viemDecodeFunctionResult`.
- If your `Result` type is different, you may need to adapt the return value accordingly.
- Always ensure the ABI and function name are valid before decoding.

lamlv2305: can u convert to interface Result extends ReadonlyArray<any> {
    readonly [key: string]: any;
}

GitHub Copilot: Certainly! Here’s how you can convert your `Result` type to a TypeScript interface:

````typescript
export interface Result extends ReadonlyArray<any> {
    readonly [key: string]: any;
}
````

**Usage:**  
- This interface allows `Result` to behave like an array, but also have additional named properties (like ethers.js call results).
- You can now import and use `Result` as an interface in your TypeScript code.

If you want to replace the existing type declaration, just swap `interface` for `type` in your code as shown above.

lamlv2305: Type 'unknown' must have a '[Symbol.iterator]()' method that returns an iterator.ts(2488)

GitHub Copilot: The error occurs because Viem's `readContract` return types are not properly typed as iterables for destructuring. Let's fix the `aggregate` method:

````typescript
import { Aggregate, Aggregate3, Multicall3, abi, config } from '@holdstation/worldchain-sdk'
import { createPublicClient, parseAbi } from 'viem'

export class ViemMulticall3 implements Multicall3 {
  private readonly address: `0x${string}`

  constructor(private publicClient: ReturnType<typeof createPublicClient>) {
    this.address = config.multicall3Address as `0x${string}`
  }

  async aggregate(calls: Aggregate['request'][]): Promise<Aggregate['response']> {
    const result = await this.publicClient.readContract({
      address: this.address,
      abi: parseAbi(abi.MULTICALL3_ABI),
      functionName: 'aggregate',
      args: [calls],
    });
    
    // Cast the result to the expected tuple type
    const resultArray = result as [bigint, { returnData: string }[]];
    const blockNumber = resultArray[0];
    const returnStructs = resultArray[1];

    return [blockNumber, returnStructs.map((c) => c.returnData)];
  }

  async aggregate3(calls: Aggregate3['request'][]): Promise<Aggregate3['response'][]> {
    const results = await this.publicClient.readContract({
      address: this.address,
      abi: parseAbi(abi.MULTICALL3_ABI),
      functionName: 'aggregate3',
      args: [calls],
    }) as { success: boolean, returnData: string }[];

    return results.map((item) => ({
      blockNumber: 0n, // Multicall3 aggregate3 usually does not return blockNumber
      returnData: item.returnData,
      success: item.success,
      error: item.success ? undefined : 'Call failed',
    }));
  }
}
````

**The key changes:**
1. Don't use array destructuring directly on the result
2. Cast the result to the expected type
3. Access the tuple elements by index
4. Then extract and map the data as needed

This ensures TypeScript knows the shape of the data and can verify the operations are valid.

lamlv2305:   async aggregate3(calls: Aggregate3["request"][]): Promise<Aggregate3["response"][]> {
    const [block, data] = await this.contract.aggregate3(calls);

    return data.map((item: any) => {
      return {
        blockNumber: block,
        returnData: item.returnData,
        success: item.success,
        error: item.error,
      };
    });
  }

  is this true for multicall3, i think they do not return block

GitHub Copilot: You're correct. For `aggregate3` in Multicall3, the contract doesn't return a block number - it only returns an array of result objects.

Let's fix your implementation:

````typescript
async aggregate3(calls: Aggregate3["request"][]): Promise<Aggregate3["response"][]> {
  // Multicall3.aggregate3 only returns the results array, not a block number
  const results = await this.contract.aggregate3(calls);

  return results.map((item: any) => {
    return {
      blockNumber: 0, // No block number from aggregate3
      returnData: item.returnData,
      success: item.success,
      error: item.success ? undefined : "Call failed", // Only include error if success is false
    };
  });
}
````

**Important changes:**
1. `aggregate3` returns only the results array, not a tuple with block number
2. We've added a default block number of `0`
3. Added logic to only include error when success is false

You might want to get the current block number separately if needed in your implementation.

lamlv2305: why i got error when pass publicClient to `new ViemMulticall3(publicClient)`

GitHub Copilot: The error occurs because the `ViemMulticall3` constructor expects a specific type for `publicClient`, but you might be passing a slightly different type. This is likely due to how the `createPublicClient` function is typed in Viem.

Here are a few ways to fix it:

1. **Fix the constructor type declaration:**

````typescript
import { type PublicClient } from 'viem'

export class ViemMulticall3 implements Multicall3 {
  private readonly address: `0x${string}`

  constructor(private publicClient: PublicClient) {
    this.address = config.multicall3Address as `0x${string}`
  }
  
  // ...rest of the code
}
````

2. **Add a type cast in the test:**

````typescript
import { type PublicClient } from 'viem'

it('call balance on chain', async () => {
  const multicall = new ViemMulticall3(publicClient as PublicClient)
})
````

The issue is likely that your constructor is using `ReturnType<typeof createPublicClient>`, but you're creating the client with specific options like `batch` and `cacheTime` which might be narrowing the type.

Using the `PublicClient` type directly (rather than `ReturnType<typeof createPublicClient>`) is generally more reliable for this use case.

lamlv2305: Index signature in type 'Result' only permits reading.

GitHub Copilot: The error occurs because you're trying to modify the `Result` type, but its index signature is defined as `readonly`. Let's fix the `toResult` method:

````typescript
import { Result } from '@holdstation/worldchain-sdk'
import { Abi, decodeFunctionResult, encodeFunctionData as viemEncode } from 'viem'

export class ViemCodec implements AbiCodec {
  constructor(private abi: Abi) {}

  encodeFunctionData(fnName: string, args: unknown[] = []): string {
    return viemEncode({ abi: this.abi, functionName: fnName, args })
  }

  decodeFunctionData(fnName: string, data: string): Result {
    const fn = this.abi.find((f) => f.type === 'function' && f.name === fnName)
    if (!fn || !('outputs' in fn)) {
      throw new Error(`Function ${fnName} not found in ABI`)
    }

    const { result } = decodeFunctionResult({
      abi: this.abi,
      functionName: fnName as any,
      data: data as `0x${string}`,
    })

    const keys = fn.outputs?.map((o) => o.name || '') ?? []
    return this.toResult(result as any[], keys)
  }

  private toResult(values: any[], keys: string[]): Result {
    // Create a new object with both array-like and named properties
    const resultObj: Record<string | number, any> = {}
    
    // Add array indices
    values.forEach((val, i) => {
      resultObj[i] = val
    })
    
    // Add named properties
    keys.forEach((key, i) => {
      if (key) { // Only add if key name exists
        resultObj[key] = values[i]
      }
    })
    
    // Add length property
    resultObj.length = values.length
    
    // Use Object.assign to cast to Result
    return Object.assign(values.slice(), resultObj) as unknown as Result;
  }
}
````

**Key changes:**
1. Instead of modifying the array directly, we:
   - Create a copy of the array using `slice()`
   - Use `Object.assign` to add the named properties
   - Cast the result to `Result`

This approach creates a new array with the desired properties, avoiding the issue with the readonly index signature.

lamlv2305: Property 'result' does not exist on type 'unknown'.

GitHub Copilot: The error occurs because the return value of `decodeFunctionResult` in Viem doesn't have a guarantee that it contains a `result` property. Let's fix the `decodeFunctionData` method:

````typescript
import { AbiCodec, Result } from '@holdstation/worldchain-sdk'
import { Abi, decodeFunctionResult, encodeFunctionData as viemEncode } from 'viem'

export class ViemCodec implements AbiCodec {
  constructor(private abi: Abi) {}

  encodeFunctionData(fnName: string, args: unknown[] = []): string {
    return viemEncode({ abi: this.abi, functionName: fnName, args })
  }

  decodeFunctionData(fnName: string, data: string): Result {
    const fn = this.abi.find((f) => f.type === 'function' && f.name === fnName)
    if (!fn || !('outputs' in fn)) {
      throw new Error(`Function ${fnName} not found in ABI`)
    }

    const decoded = decodeFunctionResult({
      abi: this.abi,
      functionName: fnName as any,
      data: data as `0x${string}`,
    })

    // Viem doesn't return {result}, it returns the result directly
    const values = decoded as any[]
    const keys = fn.outputs?.map((o) => o.name || '') ?? []
    return this.toResult(values, keys)
  }

  private toResult(values: any[], keys: string[]): Result {
    // Create a new object with both array-like and named properties
    const resultObj: Record<string | number, any> = {}

    // Add array indices
    values.forEach((val, i) => {
      resultObj[i] = val
    })

    // Add named properties
    keys.forEach((key, i) => {
      if (key) {
        // Only add if key name exists
        resultObj[key] = values[i]
      }
    })

    // Add length property
    resultObj.length = values.length

    // Use Object.assign to cast to Result
    return Object.assign(values.slice(), resultObj) as unknown as Result
  }
}
````

**Key changes:**
1. Removed the destructuring of `{ result }` from `decodeFunctionResult`
2. Cast the return value directly to `any[]`
3. Use that as your values array

Viem's `decodeFunctionResult` returns the decoded value directly, not an object with a `result` property.

lamlv2305:  However, Jest was able to find:
        './react.d.ts'

    You might want to include a file extension in your import, or update your 'moduleFileExtensions', which is currently ['js', 'mjs', 'cjs', 'jsx', 'ts', 'tsx', 'json', 'node'].

    See https://jestjs.io/docs/configuration#modulefileextensions-arraystring

    > 1 | 'use strict';var ethers=require('ethers'),asyncMutex=require('async-mutex'),idb=require('idb'),minikitJs=require('@worldcoin/minikit-js'),D=require('bignumber.js');function _interopDefault(e){return e&&e.__esModule?e:{default:e}}var D__default=/*#__PURE__*/_interopDefault(D);var L=Object.defineProperty;var F=(l,e)=>{for(var t in e)L(l,t,{get:e[t],enumerable:true});};var I={};F(I,{DEX_ABI:()=>f,MULTICALL3_ABI:()=>R,erc20:()=>d,uniswapQuoterV2ABI:()=>N,uniswapRouterV2ABI:()=>W,uniswapRouterV3ABI:()=>Q,viewQuoterv3ABI:()=>X});var f=[{type:"receive",stateMutability:"payable"},{type:"function",name:"fillQuoteEthToToken",inputs:[{name:"buyTokenAddress",type:"address",internalType:"address"},{name:"target",type:"address",internalType:"address payable"},{name:"swapCallData",type:"bytes",internalType:"bytes"},{name:"f

    when i run jest, and fail, they log whole my library source code, how to prevent it /

GitHub Copilot: The issue is that Jest is failing to import modules and then showing your bundled source code in the error. To prevent Jest from showing your source code when tests fail, you can configure Jest to provide cleaner error messages.

Here's how to solve the issues:

1. **Fix the immediate import error**

Jest can't find the modules because you need to update your `jest.config.js` file.

````javascript
module.exports = {
  // Transform TypeScript files
  transform: {
    '^.+\\.(ts|tsx)$': 'ts-jest',
  },
  // Tell Jest to look for test files with these extensions
  moduleFileExtensions: ['js', 'mjs', 'cjs', 'jsx', 'ts', 'tsx', 'json', 'node'],
  // Prevent verbose error reporting
  verbose: false,
  // Customize test reporters to reduce output
  reporters: [
    'default',
    ['jest-silent-reporter', { useDots: true, showWarnings: true }]
  ],
  // Limit stack trace detail
  testEnvironment: 'node',
  // Reduce console output
  silent: false,
  // Don't print full error details
  noStackTrace: true,
  // Don't output full source when tests fail
  testFailureExitCode: 1
};
````

2. **Install the silent reporter**

```bash
yarn add --dev jest-silent-reporter
```

3. **Fix the import in your test file**

Make sure file extensions match exactly and the file exists. For example, check if `mutilcall3.ts` should be `multicall3.ts`:

````typescript
// Fix import path if needed
import { ViemMulticall3 } from './multicall3'; // or './mutilcall3' if that's correct
````

4. **Run Jest with minimal output**

```bash
yarn jest --silent
```

These changes should help reduce the verbose error output and prevent your entire source code from being displayed when tests fail.

lamlv2305:   ● Test suite failed to run

    Cannot find module 'react' from 'node_modules/zustand/index.js'

    Require stack:
      node_modules/zustand/index.js
      node_modules/@worldcoin/idkit-core/build/index.cjs
      node_modules/@worldcoin/minikit-js/build/index.cjs
      packages/core/dist/index.js
      packages/viem/src/multicall3.test.ts


    However, Jest was able to find:
        './react.d.ts'

    You might want to include a file extension in your import, or update your 'moduleFileExtensions', which is currently ['js', 'mjs', 'cjs', 'jsx', 'ts', 'tsx', 'json', 'node'].

    See https://jestjs.io/docs/configuration#modulefileextensions-arraystring

     why i got that error

GitHub Copilot: The error shows that Jest is trying to load React when running your tests, even though your test shouldn't need React. This is happening because of dependencies in your import chain:

```
multicall3.test.ts → core/dist/index.js → @worldcoin/minikit-js → @worldcoin/idkit-core → zustand → react
```

When Jest tries to resolve the React module in zustand, it can't find it because:

1. React is not installed in your project
2. The test environment is set up for Node.js, not for React

## Here's how to fix it:

1. **Install React as a dev dependency**
   ```bash
   yarn add --dev react react-dom
   ```

2. **Create a mock for React in your Jest config**
   ```javascript
   // filepath: /Volumes/hs/work/worldchain-sdk/jest.config.js
   module.exports = {
     // ... other config
     moduleNameMapper: {
       '^react$': '<rootDir>/node_modules/react',
       '^react-dom$': '<rootDir>/node_modules/react-dom'
     },
     // For Node.js environment
     testEnvironment: 'node',
   }
   ```

3. **Alternatively, mock the dependencies**
   ```javascript
   // filepath: /Volumes/hs/work/worldchain-sdk/jest.config.js
   module.exports = {
     // ... other config
     moduleNameMapper: {
       '@worldcoin/minikit-js': '<rootDir>/__mocks__/minikit-js.js',
     }
   }
   ```

4. **Create the mock file**
   ```javascript
   // filepath: /Volumes/hs/work/worldchain-sdk/__mocks__/minikit-js.js
   // Mock only what's needed by your tests
   module.exports = {}
   ```

Choose the approach that makes the most sense for your project. Option 1 adds React, while Option 3+4 mocks the dependency that's causing the issue.

lamlv2305:   TypeError: abi.filter is not a function

GitHub Copilot: This error suggests that in your code, something is expecting `abi` to be an array (so it can call `filter` on it), but it's actually another type.

The issue is likely in your `ViemMulticall3` class when you're using `parseAbi(abi.MULTICALL3_ABI)`. 

Let's fix it:

````typescript
import { Aggregate, Aggregate3, Multicall3, abi, config } from '@holdstation/worldchain-sdk'
import { parseAbi, type PublicClient } from 'viem'

export class ViemMulticall3 implements Multicall3 {
  private readonly address: `0x${string}`
  private readonly parsedAbi: any

  constructor(private publicClient: PublicClient) {
    this.address = config.multicall3Address as `0x${string}`
    // Check what type is abi.MULTICALL3_ABI
    if (Array.isArray(abi.MULTICALL3_ABI)) {
      // It's already an array, so use it directly
      this.parsedAbi = abi.MULTICALL3_ABI
    } else {
      // It's a string or other format, so parse it
      this.parsedAbi = parseAbi(abi.MULTICALL3_ABI)
    }
  }

  async aggregate(calls: Aggregate['request'][]): Promise<Aggregate['response']> {
    const result = await this.publicClient.readContract({
      address: this.address,
      abi: this.parsedAbi,
      functionName: 'aggregate',
      args: [calls],
    })

    // Cast the result to the expected tuple type
    const resultArray = result as [bigint, { returnData: string }[]]
    const blockNumber = Number(resultArray[0])
    const returnStructs = resultArray[1]

    return [blockNumber, returnStructs.map((c) => c.returnData)]
  }

  async aggregate3(calls: Aggregate3["request"][]): Promise<Aggregate3["response"][]> {
    const results = await this.publicClient.readContract({
      address: this.address,
      abi: this.parsedAbi, 
      functionName: 'aggregate3',
      args: [calls],
    }) as { success: boolean; returnData: string }[]

    return results.map((item) => ({
      blockNumber: 0n, // No block number from aggregate3
      returnData: item.returnData,
      success: item.success,
      error: item.success ? undefined : "Call failed"
    }));
  }
}
````

**Key changes:**
1. Parse the ABI only once in the constructor
2. Check if `abi.MULTICALL3_ABI` is already an array before parsing
3. Use the parsed ABI in both methods

This should fix the "abi.filter is not a function" error.

lamlv2305: i made mistake, i want to function similar with `decodeFunctionResult` of ethers@5.8.0, not `decodeFunctionData`

GitHub Copilot: You're right - the function you implemented as `decodeFunctionData` should actually be named `decodeFunctionResult` to match ethers.js v5.8.0 naming.

Here's the correct implementation:

````typescript
import { AbiCodec, Result } from '@holdstation/worldchain-sdk'
import { Abi, decodeFunctionResult as viemDecodeFunctionResult, encodeFunctionData as viemEncode } from 'viem'

export class ViemCodec implements AbiCodec {
  constructor(private abi: Abi) {}

  encodeFunctionData(fnName: string, args: unknown[] = []): string {
    return viemEncode({ abi: this.abi, functionName: fnName, args })
  }

  decodeFunctionResult(fnName: string, data: string): Result {
    const fn = this.abi.find((f) => f.type === 'function' && f.name === fnName)
    if (!fn || !('outputs' in fn)) {
      throw new Error(`Function ${fnName} not found in ABI`)
    }

    const decoded = viemDecodeFunctionResult({
      abi: this.abi,
      functionName: fnName as any,
      data: data as `0x${string}`,
    })

    // Viem doesn't return {result}, it returns the result directly
    const values = decoded as any[]
    const keys = fn.outputs?.map((o) => o.name || '') ?? []
    return this.toResult(values, keys)
  }

  private toResult(values: any[], keys: string[]): Result {
    // Create a new object with both array-like and named properties
    const resultObj: Record<string | number, any> = {}

    // Add array indices
    values.forEach((val, i) => {
      resultObj[i] = val
    })

    // Add named properties
    keys.forEach((key, i) => {
      if (key) {
        // Only add if key name exists
        resultObj[key] = values[i]
      }
    })

    // Add length property
    resultObj.length = values.length

    // Use Object.assign to cast to Result
    return Object.assign(values.slice(), resultObj) as unknown as Result
  }
}
````

**Key changes:**
1. Changed the method name from `decodeFunctionData` to `decodeFunctionResult`
2. Renamed the imported function from viem to `viemDecodeFunctionResult` for clarity
3. Kept the implementation logic the same since it was already using `decodeFunctionResult` from viem

This matches ethers.js v5.8.0's interface more closely, where:
- `encodeFunctionData` encodes function calls with arguments
- `decodeFunctionResult` decodes the returned data from function calls

lamlv2305: update my publish.yml to work with new yarn workspaces.

I want to build whole packages. If any fail, please stop, after that, publish these packages to npm

GitHub Copilot: Here's an updated GitHub workflow for publishing your Yarn workspace packages:

````yaml
name: Publish to npm

on:
  push:
    tags:
      - 'v*.*.*'  # Trigger only on version tags like v1.2.3

jobs:
  publish:
    name: Publish npm packages
    runs-on: ubuntu-latest

    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: Use Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'  # Using LTS version
          registry-url: 'https://registry.npmjs.org'

      - name: Install dependencies
        run: yarn install --frozen-lockfile

      - name: Build packages
        run: yarn workspaces run build
        # This will build all packages in the workspace in the correct dependency order
        # If any package build fails, the whole workflow will fail

      - name: Publish packages
        run: |
          echo "//registry.npmjs.org/:_authToken=${NPM_TOKEN}" > .npmrc
          # Loop through each package in packages directory
          for dir in packages/*; do
            if [ -f "$dir/package.json" ]; then
              echo "Publishing $dir"
              cd $dir
              # Check if the package is private
              IS_PRIVATE=$(node -p "require('./package.json').private")
              if [ "$IS_PRIVATE" != "true" ]; then
                npm publish --access public
                echo "✅ Published $dir"
              else
                echo "⏭️ Skipping private package $dir"
              fi
              cd ../../
            fi
          done
        env:
          NPM_TOKEN: ${{ secrets.NPM_TOKEN }}
````

**Key improvements:**

1. **Uses Node.js LTS** (v20) instead of the unstable Node 23

2. **Builds all workspace packages in dependency order** using `yarn workspaces run build`
   - If any package build fails, the workflow will stop

3. **Intelligently publishes all non-private packages** by:
   - Looping through each package directory
   - Checking if the package is private
   - Publishing only non-private packages
   - Using `--access public` for scoped packages

4. **Better organization** with separate steps for building and publishing

This workflow ensures all your packages are built together, dependencies are respected, and only publishable packages are sent to npm.

lamlv2305: hexZeroPad for ethers@v6

GitHub Copilot: The `hexZeroPad` method in your `EthersClient` needs to be updated for ethers.js v6. In v6, the utility functions have been reorganized, and `hexZeroPad` is now accessed differently than in v5.

Here's the updated implementation for ethers.js v6:

````typescript
import { AbiCodec, Client, FilterLogs, logger, OnchainTransaction, Result } from "@holdstation/worldchain-sdk";
import { ethers } from "ethers";
import { EthersCodec } from "./codec";

export class EthersClient implements Client {
  // ...existing code...

  hexZeroPad(value: string, length: number): string {
    // In ethers v6, hexZeroPad is now in the ethers.zeroPadValue function
    // The signature has changed to take a BytesLike and return a "0x"-prefixed string
    let hexValue = value;
    
    // Make sure the value has '0x' prefix
    if (!hexValue.startsWith('0x')) {
      hexValue = '0x' + hexValue;
    }
    
    return ethers.zeroPadValue(hexValue, length);
  }

  // ...rest of the class...
}
````

**Key changes:**
1. `ethers.hexZeroPad` has been replaced with `ethers.zeroPadValue`
2. The method now ensures that the value is properly prefixed with '0x'
3. The function still accepts the same parameters (value and length)

This updated version is compatible with ethers.js v6 while maintaining the same functionality.

lamlv2305: i have that script to bump version of package.json, however, they have devDependencies and peerDependencies still need to update to align with each other. 

Modify it please 

GitHub Copilot: Here's an improved version of your bump script that also updates internal dependencies and peer dependencies to keep versions aligned:

````javascript
const fs = require("fs");
const path = require("path");

const bump = (version, type) => {
  const [major, minor, patch] = version.split(".").map(Number);
  if (type === "major") return `${major + 1}.0.0`;
  if (type === "minor") return `${major}.${minor + 1}.0`;
  return `${major}.${minor}.${patch + 1}`;
};

const packagesDir = path.join(__dirname, "../packages");
const type = process.argv[2] || "patch";

// Step 1: Read all package.json files and their current versions
const packages = {};
fs.readdirSync(packagesDir).forEach((pkgName) => {
  const pkgPath = path.join(packagesDir, pkgName);
  const stat = fs.statSync(pkgPath);

  // Skip non-directories and hidden files
  if (!stat.isDirectory() || pkgName.startsWith(".")) return;

  const pkgJsonPath = path.join(pkgPath, "package.json");
  if (!fs.existsSync(pkgJsonPath)) return;

  const pkg = JSON.parse(fs.readFileSync(pkgJsonPath, "utf-8"));
  packages[pkg.name] = {
    path: pkgJsonPath,
    currentVersion: pkg.version,
    newVersion: bump(pkg.version, type),
    json: pkg
  };
});

// Step 2: Update versions in each package.json
Object.keys(packages).forEach((packageName) => {
  const pkg = packages[packageName];
  const pkgJson = pkg.json;
  
  // Update the package's own version
  pkgJson.version = pkg.newVersion;
  
  // Update dependencies that reference other packages in our workspace
  const dependencyTypes = ["dependencies", "devDependencies", "peerDependencies"];
  
  dependencyTypes.forEach(depType => {
    if (!pkgJson[depType]) return;
    
    Object.keys(pkgJson[depType]).forEach(dependency => {
      // If this is one of our packages, update its version
      if (packages[dependency]) {
        pkgJson[depType][dependency] = `^${packages[dependency].newVersion}`;
      }
    });
  });
  
  // Write updated package.json back to file
  fs.writeFileSync(pkg.path, JSON.stringify(pkgJson, null, 2) + "\n");
  console.log(`✅ Bumped ${packageName} from ${pkg.currentVersion} to ${pkg.newVersion}`);
});

// Log a summary
console.log("\n📦 Summary of version bumps:");
Object.keys(packages).forEach(name => {
  console.log(`  ${name}: ${packages[name].currentVersion} → ${packages[name].newVersion}`);
});
````

**Key improvements:**

1. **Two-step process**:
   - First reads all package information
   - Then updates all versions with knowledge of all new versions

2. **Updates dependencies**:
   - Checks `dependencies`, `devDependencies`, and `peerDependencies`
   - Updates any references to internal packages with their new versions

3. **Better output formatting**:
   - Shows the version change from old to new
   - Adds a summary at the end of all packages that were bumped
   - Preserves newlines at end of package.json files

4. **More maintainable**:
   - Organizes data in a packages object for easier referencing
   - Reuses code for different dependency types

This script maintains your original functionality while ensuring all internal package references stay in sync during version bumps.

lamlv2305: if (!fs.existsSync(pkgJsonPath)) return;

update styles please, never use inline return please 

GitHub Copilot: Here's the updated bump script with improved coding style, avoiding inline returns and with better formatting:

````javascript
const fs = require("fs");
const path = require("path");

/**
 * Bumps a semantic version based on type (major, minor, patch)
 * @param {string} version - Current version in format "x.y.z"
 * @param {string} type - "major", "minor", or "patch" 
 * @returns {string} Bumped version
 */
const bump = (version, type) => {
  const [major, minor, patch] = version.split(".").map(Number);
  
  if (type === "major") {
    return `${major + 1}.0.0`;
  }
  
  if (type === "minor") {
    return `${major}.${minor + 1}.0`;
  }
  
  return `${major}.${minor}.${patch + 1}`;
};

// Step 1: Read all package.json files and their current versions
const packagesDir = path.join(__dirname, "../packages");
const type = process.argv[2] || "patch";
const packages = {};

fs.readdirSync(packagesDir).forEach((pkgName) => {
  const pkgPath = path.join(packagesDir, pkgName);
  const stat = fs.statSync(pkgPath);

  // Skip non-directories and hidden files
  if (!stat.isDirectory() || pkgName.startsWith(".")) {
    return;
  }

  const pkgJsonPath = path.join(pkgPath, "package.json");
  
  if (!fs.existsSync(pkgJsonPath)) {
    return;
  }

  const pkg = JSON.parse(fs.readFileSync(pkgJsonPath, "utf-8"));
  packages[pkg.name] = {
    path: pkgJsonPath,
    currentVersion: pkg.version,
    newVersion: bump(pkg.version, type),
    json: pkg
  };
});

// Step 2: Update versions in each package.json
Object.keys(packages).forEach((packageName) => {
  const pkg = packages[packageName];
  const pkgJson = pkg.json;
  
  // Update the package's own version
  pkgJson.version = pkg.newVersion;
  
  // Update dependencies that reference other packages in our workspace
  const dependencyTypes = ["dependencies", "devDependencies", "peerDependencies"];
  
  dependencyTypes.forEach(depType => {
    if (!pkgJson[depType]) {
      return;
    }
    
    Object.keys(pkgJson[depType]).forEach(dependency => {
      // If this is one of our packages, update its version
      if (packages[dependency]) {
        pkgJson[depType][dependency] = `^${packages[dependency].newVersion}`;
      }
    });
  });
  
  // Write updated package.json back to file
  fs.writeFileSync(pkg.path, JSON.stringify(pkgJson, null, 2) + "\n");
  console.log(`✅ Bumped ${packageName} from ${pkg.currentVersion} to ${pkg.newVersion}`);
});

// Log a summary
console.log("\n📦 Summary of version bumps:");
Object.keys(packages).forEach(name => {
  console.log(`  ${name}: ${packages[name].currentVersion} → ${packages[name].newVersion}`);
});
````

**Style improvements:**
1. Used block-style returns with curly braces instead of inline returns
2. Added JSDoc comments for the bump function
3. Split the process into clear steps with comments
4. Added newlines for better code readability
5. Consistent spacing and formatting
6. Added explicit returns for all conditional branches
7. Preserved the functionality of updating dependent package versions

The code now follows a more consistent style while maintaining the same functionality.

lamlv2305: give me test suite example for monorepo.

the test case for #folder:ether-v5 #folder:ether-v6 #folder:viem must be the same, they are the diffirent intergrate with third party, so input and output of them must be exactly the same cuz we return raw js object

GitHub Copilot: # Test Suite Example for Worldchain SDK Monorepo

Here's a comprehensive test suite structure for your monorepo that ensures consistent behavior across all packages (`ethers-v5`, `ethers-v6`, and `viem`).

## Shared Test Suite Structure

First, let's create a shared test folder with common test cases:

````typescript
import { Client, Multicall3, AbiCodec, TokenProvider } from '@holdstation/worldchain-sdk'

export interface TestProvider {
  name: string;
  getClient: () => Client;
  getMulticall3: () => Multicall3;
  getAbiCodec: (abi: any) => AbiCodec;
}

export const ERC20_ABI = [
  'function balanceOf(address owner) view returns (uint256)',
  'function decimals() view returns (uint8)',
  'function symbol() view returns (string)',
  'function name() view returns (string)',
]

export const TEST_ADDRESS = '0x79A02482A880bCE3F13e09Da970dC34db4CD24d1' // Some token
export const TEST_USER_ADDRESS = '0xEd10C200aFc35AF91A45E8BE53cd5a299F93F32F' // Some user address

export function runTests(provider: TestProvider) {
  describe(`${provider.name} integration tests`, () => {
    let client: Client
    let multicall3: Multicall3
    let codec: AbiCodec

    beforeAll(() => {
      client = provider.getClient()
      multicall3 = provider.getMulticall3()
      codec = provider.getAbiCodec(ERC20_ABI)
    })

    describe('Client', () => {
      test('should report chain id', async () => {
        const chainId = client.getChainId()
        expect(chainId).toBeGreaterThan(0)
      })

      test('should check address validity', () => {
        expect(client.isValidAddress(TEST_ADDRESS)).toBe(true)
        expect(client.isValidAddress('0xinvalid')).toBe(false)
      })

      test('should get block number', async () => {
        const blockNumber = await client.getBlockNumber()
        expect(blockNumber).toBeGreaterThan(0)
      })

      test('should pad hex values', () => {
        const padded = client.hexZeroPad('0x1', 32)
        expect(padded.length).toBe(66) // 0x + 64 characters
        expect(padded.startsWith('0x')).toBe(true)
      })
    })

    describe('AbiCodec', () => {
      test('should encode function data', () => {
        const data = codec.encodeFunctionData('balanceOf', [TEST_USER_ADDRESS])
        expect(data).toMatch(/^0x/)
      })

      test('should decode function result', () => {
        // Mock result from balanceOf call
        const mockData = '0x0000000000000000000000000000000000000000000000000de0b6b3a7640000' // 1 ETH
        const result = codec.decodeFunctionResult('balanceOf', mockData)
        
        // All implementations should return the same structure
        expect(result.length).toBe(1)
        expect(result[0].toString()).toBe('1000000000000000000')
      })
    })

    describe('Multicall3', () => {
      test('should perform aggregate call', async () => {
        const calls = [
          {
            target: TEST_ADDRESS,
            callData: codec.encodeFunctionData('balanceOf', [TEST_USER_ADDRESS])
          },
          {
            target: TEST_ADDRESS,
            callData: codec.encodeFunctionData('decimals', [])
          }
        ]

        const result = await multicall3.aggregate(calls)
        expect(Array.isArray(result)).toBe(true)
        expect(result.length).toBe(2)
        expect(result[0]).toBeGreaterThan(0) // Block number
        expect(result[1].length).toBe(2) // Two results
      })

      test('should perform aggregate3 call', async () => {
        const calls = [
          {
            target: TEST_ADDRESS,
            callData: codec.encodeFunctionData('balanceOf', [TEST_USER_ADDRESS]),
            allowFailure: true
          },
          {
            target: TEST_ADDRESS,
            callData: codec.encodeFunctionData('decimals', []),
            allowFailure: true
          }
        ]

        const result = await multicall3.aggregate3(calls)
        expect(Array.isArray(result)).toBe(true)
        expect(result.length).toBe(2)
        expect(result[0].success).toBe(true)
        expect(result[1].success).toBe(true)
      })
    })

    describe('TokenProvider', () => {
      let tokenProvider: TokenProvider

      beforeAll(() => {
        tokenProvider = new TokenProvider({ client, multicall3 })
      })

      test('should fetch token details', async () => {
        const tokenInfo = await tokenProvider.details(TEST_ADDRESS)
        expect(tokenInfo.address).toBe(TEST_ADDRESS.toLowerCase())
        expect(tokenInfo.name).toBeTruthy()
        expect(tokenInfo.symbol).toBeTruthy()
        expect(tokenInfo.decimals).toBeGreaterThan(0)
      })
    })
  })
}
````

## Implementation for Each Package

Now, create a test file for each package:

### Ethers v5 Tests

````typescript
import { ethers } from 'ethers'
import { EthersClient } from '../src/client'
import { EthersCodec } from '../src/codec'
import { EthersMulticall3 } from '../src/multicall3'
import { runTests, TestProvider, ERC20_ABI } from '../../../tests/shared'

const RPC_URL = 'https://worldchain-mainnet.g.alchemy.com/public'

const provider: TestProvider = {
  name: 'ethers-v5',
  getClient: () => {
    const ethersProvider = new ethers.providers.JsonRpcProvider(RPC_URL)
    return new EthersClient(ethersProvider)
  },
  getMulticall3: () => {
    const ethersProvider = new ethers.providers.JsonRpcProvider(RPC_URL)
    return new EthersMulticall3(ethersProvider)
  },
  getAbiCodec: (abi) => {
    return new EthersCodec(abi)
  }
}

runTests(provider)
````

### Ethers v6 Tests

````typescript
import { ethers } from 'ethers'
import { EthersClient } from '../src/client'
import { EthersCodec } from '../src/codec'
import { EthersMulticall3 } from '../src/multicall3'
import { runTests, TestProvider, ERC20_ABI } from '../../../tests/shared'

const RPC_URL = 'https://worldchain-mainnet.g.alchemy.com/public'

const provider: TestProvider = {
  name: 'ethers-v6',
  getClient: () => {
    const ethersProvider = new ethers.JsonRpcProvider(RPC_URL)
    return new EthersClient(ethersProvider)
  },
  getMulticall3: () => {
    const ethersProvider = new ethers.JsonRpcProvider(RPC_URL)
    return new EthersMulticall3(ethersProvider)
  },
  getAbiCodec: (abi) => {
    return new EthersCodec(abi)
  }
}

runTests(provider)
````

### Viem Tests

````typescript
import { createPublicClient, http } from 'viem'
import { worldchain } from 'viem/chains'
import { ViemClient } from '../src/client'
import { ViemCodec } from '../src/codec'
import { ViemMulticall3 } from '../src/mutilcall3'
import { runTests, TestProvider, ERC20_ABI } from '../../../tests/shared'

const RPC_URL = 'https://worldchain-mainnet.g.alchemy.com/public'

const provider: TestProvider = {
  name: 'viem',
  getClient: () => {
    const publicClient = createPublicClient({
      chain: worldchain,
      transport: http(RPC_URL),
      batch: { multicall: true }
    })
    return new ViemClient(publicClient)
  },
  getMulticall3: () => {
    const publicClient = createPublicClient({
      chain: worldchain,
      transport: http(RPC_URL),
      batch: { multicall: true }
    })
    return new ViemMulticall3(publicClient)
  },
  getAbiCodec: (abi) => {
    return new ViemCodec(abi)
  }
}

runTests(provider)
````

## Jest Configuration

Create a Jest config to ensure tests run correctly:

````javascript
module.exports = {
  preset: 'ts-jest',
  testEnvironment: 'node',
  testMatch: ['**/tests/**/*.test.ts'],
  transform: {
    '^.+\\.tsx?$': ['ts-jest', { 
      tsconfig: './tsconfig.json',
      isolatedModules: true
    }]
  },
  moduleNameMapper: {
    '^react$': '<rootDir>/node_modules/react',
    '^react-dom$': '<rootDir>/node_modules/react-dom'
  },
  testTimeout: 30000, // Increased timeout for blockchain calls
  setupFilesAfterEnv: ['./jest.setup.js']
}
````

````javascript
// Silence console.log during tests
console.log = jest.fn();
// But keep errors
console.error = console.error;
````

## Running Tests

Add these scripts to your root package.json:

````json
{
  "scripts": {
    "test": "jest",
    "test:ethers-v5": "jest packages/ethers-v5",
    "test:ethers-v6": "jest packages/ethers-v6",
    "test:viem": "jest packages/viem"
  }
}
````

This structure ensures:
1. All implementations are tested against the same test cases
2. All packages must return the same data structures
3. Tests are run against a real blockchain for integration testing
4. You can test individual packages or all at once

lamlv2305: can i split `describe` to multiple files 

GitHub Copilot: Yes, you can split your `describe` blocks into multiple files for better organization and maintainability. This approach is especially useful for large test suites in a monorepo.

Here's how you can restructure the tests:

## 1. Create separate test files for each component

````typescript
import { Client } from '@holdstation/worldchain-sdk'
import { TestProvider, TEST_ADDRESS } from './common'

export function runClientTests(provider: TestProvider) {
  describe(`${provider.name} Client tests`, () => {
    let client: Client

    beforeAll(() => {
      client = provider.getClient()
    })

    test('should report chain id', () => {
      const chainId = client.getChainId()
      expect(chainId).toBeGreaterThan(0)
    })

    test('should check address validity', () => {
      expect(client.isValidAddress(TEST_ADDRESS)).toBe(true)
      expect(client.isValidAddress('0xinvalid')).toBe(false)
    })

    test('should get block number', async () => {
      const blockNumber = await client.getBlockNumber()
      expect(blockNumber).toBeGreaterThan(0)
    })

    test('should pad hex values', () => {
      const padded = client.hexZeroPad('0x1', 32)
      expect(padded.length).toBe(66) // 0x + 64 characters
      expect(padded.startsWith('0x')).toBe(true)
    })
  })
}
````

````typescript
import { AbiCodec } from '@holdstation/worldchain-sdk'
import { TestProvider, ERC20_ABI, TEST_USER_ADDRESS } from './common'

export function runCodecTests(provider: TestProvider) {
  describe(`${provider.name} AbiCodec tests`, () => {
    let codec: AbiCodec

    beforeAll(() => {
      codec = provider.getAbiCodec(ERC20_ABI)
    })

    test('should encode function data', () => {
      const data = codec.encodeFunctionData('balanceOf', [TEST_USER_ADDRESS])
      expect(data).toMatch(/^0x/)
    })

    test('should decode function result', () => {
      // Mock result from balanceOf call
      const mockData = '0x0000000000000000000000000000000000000000000000000de0b6b3a7640000' // 1 ETH
      const result = codec.decodeFunctionResult('balanceOf', mockData)
      
      // All implementations should return the same structure
      expect(result.length).toBe(1)
      expect(result[0].toString()).toBe('1000000000000000000')
    })
  })
}
````

````typescript
import { Multicall3, AbiCodec } from '@holdstation/worldchain-sdk'
import { TestProvider, ERC20_ABI, TEST_ADDRESS, TEST_USER_ADDRESS } from './common'

export function runMulticall3Tests(provider: TestProvider) {
  describe(`${provider.name} Multicall3 tests`, () => {
    let multicall3: Multicall3
    let codec: AbiCodec

    beforeAll(() => {
      multicall3 = provider.getMulticall3()
      codec = provider.getAbiCodec(ERC20_ABI)
    })

    test('should perform aggregate call', async () => {
      const calls = [
        {
          target: TEST_ADDRESS,
          callData: codec.encodeFunctionData('balanceOf', [TEST_USER_ADDRESS])
        },
        {
          target: TEST_ADDRESS,
          callData: codec.encodeFunctionData('decimals', [])
        }
      ]

      const result = await multicall3.aggregate(calls)
      expect(Array.isArray(result)).toBe(true)
      expect(result.length).toBe(2)
      expect(result[0]).toBeGreaterThan(0) // Block number
      expect(result[1].length).toBe(2) // Two results
    })

    test('should perform aggregate3 call', async () => {
      const calls = [
        {
          target: TEST_ADDRESS,
          callData: codec.encodeFunctionData('balanceOf', [TEST_USER_ADDRESS]),
          allowFailure: true
        },
        {
          target: TEST_ADDRESS,
          callData: codec.encodeFunctionData('decimals', []),
          allowFailure: true
        }
      ]

      const result = await multicall3.aggregate3(calls)
      expect(Array.isArray(result)).toBe(true)
      expect(result.length).toBe(2)
      expect(result[0].success).toBe(true)
      expect(result[1].success).toBe(true)
    })
  })
}
````

## 2. Create a common file for shared constants and interfaces

````typescript
import { Client, Multicall3, AbiCodec } from '@holdstation/worldchain-sdk'

export interface TestProvider {
  name: string;
  getClient: () => Client;
  getMulticall3: () => Multicall3;
  getAbiCodec: (abi: any) => AbiCodec;
}

export const ERC20_ABI = [
  'function balanceOf(address owner) view returns (uint256)',
  'function decimals() view returns (uint8)',
  'function symbol// filepath: /Volumes/hs/work/worldchain-sdk/tests/shared/common.ts
import { Client, Multicall3, AbiCodec } from '@holdstation/worldchain-sdk'

export interface TestProvider {
  name: string;
  getClient: () => Client;
  getMulticall3: () => Multicall3;
  getAbiCodec: (abi: any) => AbiCodec;
}

export const ERC20_ABI = [
  'function balanceOf(address owner) view returns (uint256)',
  'function decimals() view returns (uint8)',
  'function symbol

lamlv2305: can i split `describe` to multiple files 

GitHub Copilot: Yes, you can definitely split your `describe` blocks into multiple files to make your test suite more modular and maintainable. Here's how to structure it:

## 1. Split the Shared Tests by Feature

Create separate test files for each feature:

````typescript
import { Client } from '@holdstation/worldchain-sdk'
import { TestProvider, TEST_ADDRESS } from './setup'

export function runClientTests(provider: TestProvider) {
  describe(`${provider.name}: Client`, () => {
    let client: Client
    
    beforeAll(() => {
      client = provider.getClient()
    })
    
    test('should report chain id', async () => {
      const chainId = client.getChainId()
      expect(chainId).toBeGreaterThan(0)
    })

    test('should check address validity', () => {
      expect(client.isValidAddress(TEST_ADDRESS)).toBe(true)
      expect(client.isValidAddress('0xinvalid')).toBe(false)
    })

    test('should get block number', async () => {
      const blockNumber = await client.getBlockNumber()
      expect(blockNumber).toBeGreaterThan(0)
    })

    test('should pad hex values', () => {
      const padded = client.hexZeroPad('0x1', 32)
      expect(padded.length).toBe(66) // 0x + 64 characters
      expect(padded.startsWith('0x')).toBe(true)
    })
  })
}
````

````typescript
import { AbiCodec } from '@holdstation/worldchain-sdk'
import { TestProvider, TEST_USER_ADDRESS, ERC20_ABI } from './setup'

export function runCodecTests(provider: TestProvider) {
  describe(`${provider.name}: AbiCodec`, () => {
    let codec: AbiCodec
    
    beforeAll(() => {
      codec = provider.getAbiCodec(ERC20_ABI)
    })
    
    test('should encode function data', () => {
      const data = codec.encodeFunctionData('balanceOf', [TEST_USER_ADDRESS])
      expect(data).toMatch(/^0x/)
    })

    test('should decode function result', () => {
      // Mock result from balanceOf call
      const mockData = '0x0000000000000000000000000000000000000000000000000de0b6b3a7640000' // 1 ETH
      const result = codec.decodeFunctionResult('balanceOf', mockData)
      
      // All implementations should return the same structure
      expect(result.length).toBe(1)
      expect(result[0].toString()).toBe('1000000000000000000')
    })
  })
}
````

````typescript
import { Multicall3, AbiCodec } from '@holdstation/worldchain-sdk'
import { TestProvider, TEST_ADDRESS, TEST_USER_ADDRESS, ERC20_ABI } from './setup'

export function runMulticallTests(provider: TestProvider) {
  describe(`${provider.name}: Multicall3`, () => {
    let multicall3: Multicall3
    let codec: AbiCodec
    
    beforeAll(() => {
      multicall3 = provider.getMulticall3()
      codec = provider.getAbiCodec(ERC20_ABI)
    })
    
    test('should perform aggregate call', async () => {
      const calls = [
        {
          target: TEST_ADDRESS,
          callData: codec.encodeFunctionData('balanceOf', [TEST_USER_ADDRESS])
        },
        {
          target: TEST_ADDRESS,
          callData: codec.encodeFunctionData('decimals', [])
        }
      ]

      const result = await multicall3.aggregate(calls)
      expect(Array.isArray(result)).toBe(true)
      expect(result.length).toBe(2)
      expect(result[0]).toBeGreaterThan(0) // Block number
      expect(result[1].length).toBe(2) // Two results
    })

    test('should perform aggregate3 call', async () => {
      const calls = [
        {
          target: TEST_ADDRESS,
          callData: codec.encodeFunctionData('balanceOf', [TEST_USER_ADDRESS]),
          allowFailure: true
        },
        {
          target: TEST_ADDRESS,
          callData: codec.encodeFunctionData('decimals', []),
          allowFailure: true
        }
      ]

      const result = await multicall3.aggregate3(calls)
      expect(Array.isArray(result)).toBe(true)
      expect(result.length).toBe(2)
      expect(result[0].success).toBe(true)
      expect(result[1].success).toBe(true)
    })
  })
}
````

## 2. Create a Common Setup File 

```typescript
import { Client, Multicall3, AbiCodec } from '@holdstation/worldchain-sdk'

export interface TestProvider {
  name: string;
  getClient: () => Client;
  getMulticall3: () => Multicall3;
  getAbiCodec: (abi: any) => AbiCodec;
}

export const ERC20_ABI = [
  'function balanceOf(address owner) view returns (uint256)',
  'function decimals() view returns (uint8)',
  'function symbol() view returns (string)',
  'function name() view returns (string)',
]

export const TEST_ADDRESS = '0x79A02482A880bCE3F13e09Da970dC34db4CD24d1' // Some token
export const TEST_USER_ADDRESS = '0xEd10C200aFc35AF91A45E8BE53cd5a299F93F32F' // Some user address
```

## 3. Create an Integration File

```typescript
import { TestProvider } from './setup'
import { runClientTests } from './client.test'
import { runCodecTests } from './codec.test'
import { runMulticallTests } from './multicall3.test'

export function runAllTests(provider: TestProvider) {
  describe(`${provider.name} integration tests`, () => {
    runClientTests(provider)
    runCodecTests(provider)
    runMulticallTests(provider)
  })
}

export * from './setup'
```

## 4. Use in Individual Packages

```typescript
import { ethers } from 'ethers'
import { EthersClient } from '../src/client'
import { EthersCodec } from '../src/codec'
import { EthersMulticall3 } from '../src/multicall3'
import { runAllTests, TestProvider, ERC20_ABI } from '../../../tests/shared'

const RPC_URL = 'https://worldchain-mainnet.g.alchemy.com/public'

const provider: TestProvider = {
  name: 'ethers-v6',
  getClient: () => {
    const ethersProvider = new ethers.JsonRpcProvider(RPC_URL)
    return new EthersClient(ethersProvider)
  },
  getMulticall3: () => {
    const ethersProvider = new ethers.JsonRpcProvider(RPC_URL)
    return new EthersMulticall3(ethersProvider)
  },
  getAbiCodec: (abi) => {
    return new EthersCodec(abi)
  }
}

runAllTests(provider)
```

## Benefits of This Approach

1. **Modularity**: Each feature has its own test file
2. **Selective Testing**: You can choose to run only specific test suites
3. **Maintainability**: Easier to add/modify tests for specific features
4. **Clarity**: Tests are organized by feature rather than by implementation
5. **Reuse**: The same test cases run across all implementations

This approach still ensures all implementations are tested against the same test cases, but with much better organization.

lamlv2305: give me tree of folder structure to implement these tests.

I want to have a separate folder `<root>/tests` for whole integrate test suite. Then another package can easily re-use it 

GitHub Copilot: 

lamlv2305: give me tree of folder structure to implement these tests.

I want to have a separate folder `<root>/tests` for whole integrate test suite. Then another package can easily re-use it 

GitHub Copilot: # Monorepo Test Structure

Here's a recommended folder structure for implementing the shared test suite in your monorepo:

```
/worldchain-sdk/
├── .github/
│   └── workflows/
│       └── publish.yml
├── package.json  (root workspace)
├── tsconfig.json (root config)
├── jest.config.js
├── jest.setup.js
│
├── packages/
│   ├── core/
│   │   ├── src/
│   │   ├── dist/
│   │   └── package.json
│   │
│   ├── ethers-v5/
│   │   ├── src/
│   │   ├── tests/
│   │   │   └── integration.test.ts  (imports from /tests/shared)
│   │   ├── dist/
│   │   └── package.json
│   │
│   ├── ethers-v6/
│   │   ├── src/
│   │   ├── tests/
│   │   │   └── integration.test.ts  (imports from /tests/shared)
│   │   ├── dist/
│   │   └── package.json
│   │
│   └── viem/
│       ├── src/
│       ├── tests/
│       │   └── integration.test.ts  (imports from /tests/shared)
│       ├── dist/
│       └── package.json
│
└── tests/  (shared test suite)
    ├── shared/
    │   ├── index.ts  (main entry point)
    │   ├── setup.ts  (shared test config)
    │   ├── client.test.ts
    │   ├── codec.test.ts
    │   ├── multicall3.test.ts
    │   └── constants.ts  (test addresses, ABIs, etc.)
    │
    ├── helpers/
    │   ├── rpc-provider.ts
    │   └── mock-data.ts
    │
    └── fixtures/
        └── abis/
            ├── erc20.ts
            └── multicall3.ts
```

## Key Components

1. **Root tests Folder**
   - Contains all shared tests that can be imported by any package
   - Completely package-independent

2. **Shared Test Suite**
   - `/tests/shared/index.ts` - Main entry point exporting all test runners
   - `/tests/shared/setup.ts` - Common test setup code (interfaces, providers)
   - Individual test files for each feature

3. **Package-Specific Tests**
   - Each package has its own tests folder
   - `integration.test.ts` imports the shared test suite
   - Configures package-specific implementations as test providers

4. **Test Helpers & Fixtures**
   - Common utilities, mock data, and test fixtures
   - RPC providers, ABIs, and contract addresses

## Implementation Details

### 1. Setting up imports in the root package.json

```json
{
  "devDependencies": {
    "jest": "^29.7.0",
    "ts-jest": "^29.1.1"
  },
  "scripts": {
    "test": "jest",
    "test:ethers-v5": "jest packages/ethers-v5",
    "test:ethers-v6": "jest packages/ethers-v6",
    "test:viem": "jest packages/viem"
  }
}
```

### 2. Package integration test example

```typescript
// packages/ethers-v6/tests/integration.test.ts
import { runAllTests } from '../../../tests/shared';
import { createEthersV6Provider } from '../../../tests/helpers/rpc-provider';

const provider = createEthersV6Provider();
runAllTests(provider);
```

### 3. Helper for RPC provider

```typescript
// tests/helpers/rpc-provider.ts
import { ethers as ethersV5 } from 'ethers-v5';
import { ethers as ethersV6 } from 'ethers';
import { createPublicClient, http } from 'viem';
import { worldchain } from 'viem/chains';
import { TestProvider } from '../shared/setup';
import { EthersClient as EthersV5Client } from '../../packages/ethers-v5/src';
import { EthersClient as EthersV6Client } from '../../packages/ethers-v6/src';
import { ViemClient } from '../../packages/viem/src';

const RPC_URL = 'https://worldchain-mainnet.g.alchemy.com/public';

export function createEthersV5Provider(): TestProvider {
  return {
    name: 'ethers-v5',
    getClient: () => {
      const provider = new ethersV5.providers.JsonRpcProvider(RPC_URL);
      return new EthersV5Client(provider);
    },
    // ... other implementations
  };
}

// Similar functions for ethers-v6 and viem
```

This structure keeps your tests modular, reusable, and maintainable while ensuring consistent behavior across all implementations.

lamlv2305: Rewrite README.MD for me based on styles of https://github.com/dethcrypto/TypeChain/blob/master/README.md




GitHub Copilot: # Worldchain SDK

> 🔗 TypeScript-powered library for interacting with Worldchain blockchain with multiple provider options

[![NPM](https://img.shields.io/npm/v/@holdstation/worldchain-sdk.svg)](https://www.npmjs.com/package/@holdstation/worldchain-sdk)
[![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)](https://opensource.org/licenses/MIT)

## Features

- 🛠 **Multiple Provider Integration**: Choose between ethers.js v5/v6 or viem
- 🔄 **Unified API**: Same interface regardless of the underlying provider
- 📦 **Tree-shakable**: Import only what you need
- 🔒 **Type-safe**: Full TypeScript support with complete typings
- 🚀 **Multicall Support**: Batch multiple calls for efficient interactions
- 🧩 **Modular Design**: Core functionality is provider-agnostic

## Installation

```bash
# Core package only
npm install @holdstation/worldchain-sdk

# With ethers.js v5 support
npm in