caip-extended

CAIP-Extended is a monorepo housing multiple namespace-specific validation libraries for popular CAIP standards.

Currently, this monorepo includes a common core set of tools, and the code for the following namespace-specific packages, which each provide validator functions for each of the syntaxes listed to the right

namespace	CAIP-2	CAIP-10	CAIP-19	CAIP-122
EIP155	X	X	X
Solana	X	X	X
Hedera	X	X	X

This library is split into individual packages so you can use what you need.

• caip-extended/common: Generic package for validating CAIP values that are not namespace specific
• caip-extended/eip155: EIP-155 (i.e. Ethereum Virtual Machine) namespace package for validating CAIP values
• caip-extended/solana: Solana namespace package for validating CAIP values
• caip-extended/hedera: Hedera namespace package for validating CAIP values

Getting Started

ChainId (CAIP-2)

Object-Oriented Example w/ EIP-155

import { ERC155ChainId } from "caip-erc155";

const chainId = new ERC155ChainId("eip155:1");

// OR

const chainId = new ERC155ChainId({ namespace: "eip155", reference: "1" });

// THEN

chainId.toString();
// "eip155:1"

chainId.toJSON();
// { namespace: "eip155", reference: "1" }

Functional Example w/ EIP-155

import { ERC155ChainId } from "caip-erc155";

ERC155ChainId.parse("eip155:1");
// { namespace: "eip155", reference: "1" }

// AND

ERC155ChainId.format({ namespace: "eip155", reference: "1" });
// "eip155:1"

AccountId (CAIP-10)

Object-Oriented Example w/ EIP-155

import { ERC155AccountId } from "caip-erc155";

const accountId = new ERC155AccountId(
  "eip155:1:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb"
);

// OR

const accountId = new ERC155AccountId({
  chainId: { namespace: "eip155", reference: "1" },
  address: "0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb",
});

// ALSO

const accountId = new ERC155AccountId({
  chainId: "eip155:1",
  address: "0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb",
});

// THEN

accountId.toString();
// "eip155:1:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb"

accountId.toJSON();
// { address: "0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb", chainId: { namespace: "eip155", reference: "1" } }

Functional Example w/ EIP-155

import { ERC155AccountId } from "caip-erc155";

ERC155AccountId.parse("eip155:1:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb");
// { address: "0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb", chainId: { namespace: "eip155", reference: "1" } }

// AND

ERC155AccountId.format({
  chainId: { namespace: "eip155", reference: "1" },
  address: "0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb",
});
//"eip155:1:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb"

// OR

ERC155AccountId.format({
  chainId: "eip155:1",
  address: "0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb",
});
//"eip155:1:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb"

AssetId (CAIP-19)

Object-Oriented Example w/ EIP-155

import { ERC155AssetId } from "caip-erc155";

const assetId = new ERC155AssetId(
  "eip155:1/erc721:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb/1"
);

// OR

const assetId = new ERC155AssetId({
  chainId: { namespace: "eip155", reference: "1" },
  assetName: {
    namespace: "erc721",
    reference: "0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb",
  },
  tokenId: "1",
});

// ALSO

const assetId = new ERC155AssetId({
  chainId: "eip155:1",
  assetName: "erc721:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb",
  tokenId: "1",
});

// THEN

assetId.toString();
// "eip155:1/erc721:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb/1"

assetId.toJSON();
// {
//   chainId: { namespace: "eip155", reference: "1" },
//   assetName: { namespace: "erc721", reference: "0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb" },
//   tokenId: "1",
// }

Functional Example w/ EIP-155

import { ERC155AssetId } from "caip-erc155";

ERC155AssetId.parse(
  "eip155:1/erc721:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb/1"
);
// {
//   chainId: { namespace: "eip155", reference: "1" },
//   assetName: { namespace: "erc721", reference: "0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb" },
//   tokenId: "1",
// }

// AND

ERC155AssetId.format({
  chainId: { namespace: "eip155", reference: "1" },
  assetName: {
    namespace: "erc721",
    reference: "0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb",
  },
  tokenId: "1",
});
// "eip155:1/erc721:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb/1"

// OR

ERC155AssetId.format({
  chainId: "eip155:1",
  assetName: "erc721:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb",
  tokenId: "1",
});
// "eip155:1/erc721:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb/1"

AssetType (CAIP-19)

Object-Oriented Example w/ EIP-155

import { ERC155AssetType } from "caip-erc155";

const assetType = new ERC155AssetType(
  "eip155:1/erc721:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb"
);

// OR

const assetType = new ERC155AssetType({
  chainId: { namespace: "eip155", reference: "1" },
  assetName: {
    namespace: "erc721",
    reference: "0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb",
  },
});

// ALSO

const assetType = new ERC155AssetType({
  chainId: "eip155:1",
  assetName: "erc721:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb",
});

// THEN

assetType.toString();
// "eip155:1/erc721:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb"

assetType.toJSON();
// {
//   chainId: { namespace: "eip155", reference: "1" },
//   assetName: { namespace: "erc721", reference: "0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb" },
// }

Functional Example w/ EIP-155

import { ERC155AssetType } from "caip-erc155";

ERC155AssetType.parse(
  "eip155:1/erc721:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb"
);
// {
//   chainId: { namespace: "eip155", reference: "1" },
//   assetName: { namespace: "erc721", reference: "0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb" },
// }

// AND

ERC155AssetType.format({
  chainId: { namespace: "eip155", reference: "1" },
  assetName: {
    namespace: "erc721",
    reference: "0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb",
  },
});
// "eip155:1/erc721:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb"

// OR

ERC155AssetType.format({
  chainId: "eip155:1",
  assetName: "erc721:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb",
});
// "eip155:1/erc721:0xab16a96d359ec26a11e2c2b3d8f8b8942d5bfcdb"

Adding new namespaces

This repo uses pnpm workspaces and is a Lerna monorepo. To add a new namespace package under the monorepo, follow these steps:

• Create a new package under the pnpm workspace under the packages/ directory
• Setup the config files
  • Setup package.json with the proper package name and package version to match Lerna
  • Setup tsconfig.json and jest.config.ts
• Write the code under src/
• Write tests under __tests__/
• pnpm build and pnpm test
• Update the README.md to include your new namespace in the table
• Publish the packages to npm using Lerna

To add a new common utility (i.e. a new CAIP to profile in each repo), reach out to CASA for guidance by opening an issue that names the CAIP, and tag the authors of that CAIP.

References

• ChainAgnostic/caip-js: This project referenced some code and took inspiration from caip-js published under the MIT License, and is in many ways a per-chain-packaged extension of that toolchain into each supported namespace. The initial work was completed by @Sneh1999 as part of a bounty through Learnweb3.io, and the repo and libraries are now maintained by CASA.

License

This repository is licensed under the MIT License.