feat: CAIP Multichain

[jiexi]

Description

This branch is becoming the feature branch for CAIP-25, CAIP-27, CAIP stream bifurcation, and CAIP-25 Permissions

Related issues

See: https://github.com/MetaMask/MetaMask-planning/issues/2360
See: MetaMask/test-dapp#324

Manual testing steps

1. Go to this page...

BARAD_DUR=1 CHAIN_PERMISSIONS=1 yarn start

Replace EXTENSION_ID with your local extension ID

const EXTENSION_ID = 'nonfpcflonapegmnfeafnddgdniflbnk';
const extensionPort = chrome.runtime.connect(EXTENSION_ID)
extensionPort.onMessage.addListener((msg) => console.log('extensionPort on message', msg))
extensionPort.postMessage({
    type: 'caip-x',
    data: {
        "jsonrpc": "2.0",
        method: 'provider_authorize',
        params: {
            requiredScopes: {
                'eip155': {
                    scopes: ['eip155:1', 'eip155:59144'],
                    methods: [
                        'eth_sendTransaction',
                        'eth_accounts',
                        'eth_blockNumber',
                        'eth_getBalance',
                        'personal_sign',
                        'eth_requestAccounts',
                        'wallet_getPermissions',
                        'wallet_requestPermissions',
                        'wallet_revokePermissions',
                        'eth_chainId',
                        'wallet_switchEthereumChain'
                    ],
                    notifications: ['accountsChanged', 'chainChanged'],
                },
                'eip155:11155111': {
                    methods: ['eth_blockNumber'],
                    notifications: ['accountsChanged', 'chainChanged'],
                },
                'wallet': {
                    methods: [
                        'wallet_getPermissions',
                    ],
                    notifications: [],
                },
            },
            optionalScopes: {
                'eip155:64': {
                    methods: [
                        'eth_blockNumber',
                        'eth_getBalance',
                        'eth_getBlockByHash',
                        'eth_getBlockByNumber',
                    ],
                    notifications: ['accountsChanged', 'chainChanged'],
                },
            },
            sessionProperties: {
                expiry: 1,
                'caip154-mandatory': 'true',
            },
        },
    }
})
extensionPort.postMessage({
    type: 'caip-x',
    data: {
        "jsonrpc": "2.0",
        "method": "provider_request",
        "params": {
            "sessionId": "0xdeadbeef",
            "scope": "eip155:1",
            "request": {
                "method": "eth_chainId",
            }
        }
    }
})
extensionPort.postMessage({
    type: 'caip-x',
    data: {
        "jsonrpc": "2.0",
        "method": "provider_request",
        "params": {
            "sessionId": "0xdeadbeef",
            "scope": "eip155:11155111",
            "request": {
                "method": "eth_chainId",
            }
        }
    }
})

Screenshots/Recordings

Before

After

Pre-merge author checklist

• I’ve followed MetaMask Coding Standards.
• I've completed the PR template to the best of my ability
• I’ve included tests if applicable
• I’ve documented my code using JSDoc format if applicable
• I’ve applied the right labels on the PR (see labeling guidelines). Not required for external contributors.

Pre-merge reviewer checklist

• I've manually tested the PR (e.g. pull and build branch, run the app, test code being changed).
• I confirm that this PR addresses all acceptance criteria described in the ticket it closes and includes the necessary testing evidence such as recordings and or screenshots.

[jiexi]

this needs to move into it's own build step

[jiexi]

need to remove this

[jiexi]

@metamaskbot update-policies

[metamaskbot]

No policy changes