bn.getMpcProvider

▸ getMpcProvider(): Web3Provider

description The api to get web3 provider

remark supported jssdk >= 4.0.0

example

//eg1: get web3 provider and then request with methodbn.getMpcProvider().request({method: 'eth_requestAccounts'}).then(accounts => {console.log('accounts', accounts)})

Returns

Web3Provider

Class: Web3Provider

Name	Type	Description
idMapping	default
rpc	default
callbacks	Map<number, JsonRpcCallback<JsonRpcCallbackResponse>>
wrapResults	Map<number, boolean>
isDebug	undefined | boolean
address	string[] = []
ready	boolean = false
chainId?	string	The chain ID of the currently connected Ethereum chain.; See chainId.network for more information.
_rpcHooks	RPCHooks
isProcessingRequestAccounts	boolean = false
ProviderRpcError	typeof ProviderRpcError
setChainId	(value?): void
setAddress	(value?): void
setRpc	(rpcUrl, rpcHooks?): void
request	(payload): Promise<EthJsonRpc[T][``"response"``]["result"]>
isConnected	(): boolean	deprecated Listen to "connect" event instead.
enable	(): Promise<Maybe<string[]>>	deprecated Use request({ method: "eth_requestAccounts" }) instead.
send	(payload): EthJsonRpc[T][``"response"``]	deprecated Use request() method instead.
sendAsync	(payload, callback): void	deprecated Use request() method instead.
_request	(payload, wrapResult?): Promise<undefined | null | string | boolean | object | JsonRpcSuccess<UnknownResponse> | JsonRpcSuccess<string[]> | JsonRpcSuccess<string> | JsonRpcSuccess<boolean> | JsonRpcSuccess<null> | JsonRpcSuccess<never> | ( (undefined | string | object)[] | ( (undefined | string)[]>
eth_accounts	(): string[]
eth_coinbase	(): undefined | string
net_version	(): null | string
eth_chainId	(): null | string
eth_sign	(payload): void
personal_sign	(payload): void
eth_signTypedData	(payload, version): void
getAccounts	(): Promise<string[]>
requestAccounts	(): Promise<string[]>	Metamask 行為描述
比照流程：https://github.com/MetaMask/metamask-extension/blob/develop/app/scripts/controllers/permissions/permissionsMethodMiddleware.js
eth_sendTransaction	(payload): Promise<Maybe<string>>
populateTransaction	(payload): Promise<EthTransaction>	populate the transaction params
eth_sendRawTransaction	(payload): void
wallet_watchAsset	(payload): void
wallet_addEthereumChain	(payload): Promise<Maybe<null>>
wallet_switchEthereumChain	(payload): Promise<Maybe<null>>
postMessage	(action, id, object): void
_isJsonRpc	(result): result is JsonRpcSuccess<UnknownResponse>
sendResponse	(id, result): void
sendError	(id, error): void

setChainId

▸ setChainId(value?): void

Parameters

Name	Type
value?	string | number

Returns

void

---

setAddress

▸ setAddress(value?): void

Parameters

Name	Type	Default value
value	string[]	[]

Returns

void

---

setRpc

▸ Private setRpc(rpcUrl, rpcHooks?): void

Parameters

Name	Type
rpcUrl	undefined | string
rpcHooks?	RPCHooks

Returns

void

---

request

▸ request<T>(payload): Promise<EthJsonRpc[T][``"response"``]["result"]>

Type parameters

Name	Type
T	extends keyof EthJsonRpc

Parameters

Name	Type
payload	EthJsonRpc[T][``"request"``]

Returns

Promise<EthJsonRpc[T][``"response"``]["result"]>

---

isConnected

▸ isConnected(): boolean

deprecated Listen to "connect" event instead.

Returns

boolean

---

enable

▸ enable(): Promise<Maybe<string[]>>

deprecated Use request({ method: "eth_requestAccounts" }) instead.

Returns

Promise<Maybe<string[]>>

---

send

▸ send<T>(payload): EthJsonRpc[T][``"response"``]

deprecated Use request() method instead.

Type parameters

Name	Type
T	extends keyof EthJsonRpc

Parameters

Name	Type
payload	EthJsonRpc[T][``"request"``]

Returns

EthJsonRpc[T][``"response"``]

---

sendAsync

▸ sendAsync<T>(payload, callback): void

deprecated Use request() method instead.

Type parameters

Name	Type
T	extends keyof EthJsonRpc

Parameters

Name	Type
payload	EthJsonRpc[T][``"request"``] | EthJsonRpc[T][``"request"``][]
callback	JsonRpcCallback<EthJsonRpc[T][``"response"``] | EthJsonRpc[T][``"response"``][]>

Returns

void

---

_request

▸ Private _request(payload, wrapResult?): Promise<undefined | null | string | boolean | object | JsonRpcSuccess<UnknownResponse> | JsonRpcSuccess<string[]> | JsonRpcSuccess<string> | JsonRpcSuccess<boolean> | JsonRpcSuccess<null> | JsonRpcSuccess<never> | (undefined | string | object)[] | (undefined | string)[]>

Parameters

Name	Type	Default value
payload	JsonRpcRequest<"unknown", unknown> | JsonRpcRequest<"eth_accounts", undefined> | JsonRpcRequest<"eth_coinbase", undefined> | JsonRpcRequest<"net_version", undefined> | JsonRpcRequest<"eth_chainId", undefined> | JsonRpcRequest<"eth_sign", [string, string]> | JsonRpcRequest<"personal_sign", [string]> | JsonRpcRequest<"personal_ecRecover", [string, string]> | JsonRpcRequest<"eth_signTypedData" | "eth_signTypedData_v3" | "eth_signTypedData_v4", [string, string]> | JsonRpcRequest<"eth_sendTransaction", [EthTransaction]> | JsonRpcRequest<"eth_sendRawTransaction", [string]> | JsonRpcRequest<"eth_signTransaction", [EthTransaction]> | JsonRpcRequest<"eth_requestAccounts", undefined> | JsonRpcRequest<"eth_privateRequestAccounts", undefined> | JsonRpcRequest<"eth_getTransactionCount", [string, BlockTag]> | JsonRpcRequest<"eth_gasPrice", undefined> | JsonRpcRequest<"eth_estimateGas", [EthTransaction]> | JsonRpcRequest<"wallet_watchAsset", WatchAssetParameter> | JsonRpcRequest<"wallet_addEthereumChain", [Pick<AddEthereumChainParameter, "chainName" | "nativeCurrency" | "rpcUrls" | "blockExplorerUrls" | "iconUrls"> & { chainId: string }]> | JsonRpcRequest<"wallet_switchEthereumChain", [Omit<SwitchEthereumChainParameter, "chainId"> & { chainId: string }]> | JsonRpcRequest<"eth_newFilter", never> | JsonRpcRequest<"eth_newBlockFilter", never> | JsonRpcRequest<"eth_newPendingTransactionFilter", never> | JsonRpcRequest<"eth_uninstallFilter", never> | JsonRpcRequest<"eth_subscribe", never>	undefined
wrapResult	boolean	true

Returns

Promise<undefined | null | string | boolean | object | JsonRpcSuccess<UnknownResponse> | JsonRpcSuccess<string[]> | JsonRpcSuccess<string> | JsonRpcSuccess<boolean> | JsonRpcSuccess<null> | JsonRpcSuccess<never> | (undefined | string | object)[] | (undefined | string)[]>

---

eth_accounts

▸ Private eth_accounts(): string[]

Returns

string[]

---

eth_coinbase

▸ Private eth_coinbase(): undefined | string

Returns

undefined | string

---

net_version

▸ Private net_version(): null | string

Returns

null | string

---

eth_chainId

▸ Private eth_chainId(): null | string

Returns

null | string

---

eth_sign

▸ Private eth_sign(payload): void

Parameters

Name	Type
payload	JsonRpcRequest<"eth_sign", [string, string]>

Returns

void

---

personal_sign

▸ Private personal_sign(payload): void

Parameters

Name	Type
payload	JsonRpcRequest<"personal_sign", [string]>

Returns

void

---

eth_signTypedData

▸ Private eth_signTypedData(payload, version): void

Parameters

Name	Type
payload	JsonRpcRequest<"eth_signTypedData" | "eth_signTypedData_v3" | "eth_signTypedData_v4", [string, string]>
version	V3 | V4

Returns

void

---

getAccounts

▸ Private getAccounts(): Promise<string[]>

Returns

Promise<string[]>

---

requestAccounts

▸ Private requestAccounts(): Promise<string[]>

Metamask 行為描述 比照流程：https://github.com/MetaMask/metamask-extension/blob/develop/app/scripts/controllers/permissions/permissionsMethodMiddleware.js

Returns

Promise<string[]>

---

eth_sendTransaction

▸ Private eth_sendTransaction(payload): Promise<Maybe<string>>

Parameters

Name	Type
payload	JsonRpcRequest<"eth_sendTransaction", [EthTransaction]>

Returns

Promise<Maybe<string>>

---

populateTransaction

▸ Private populateTransaction(payload): Promise<EthTransaction>

populate the transaction params

Parameters

Name	Type
payload	JsonRpcRequest<"eth_sendTransaction", [EthTransaction]>

Returns

Promise<EthTransaction>

---

eth_sendRawTransaction

▸ Private eth_sendRawTransaction(payload): void

Parameters

Name	Type
payload	JsonRpcRequest<"eth_sendRawTransaction", [string]>

Returns

void

---

wallet_watchAsset

▸ Private wallet_watchAsset(payload): void

Parameters

Name	Type
payload	JsonRpcRequest<"wallet_watchAsset", WatchAssetParameter>

Returns

void

---

wallet_addEthereumChain

▸ Private wallet_addEthereumChain(payload): Promise<Maybe<null>>

Parameters

Name	Type
payload	JsonRpcRequest<"wallet_addEthereumChain", [Pick<AddEthereumChainParameter, "chainName" | "nativeCurrency" | "rpcUrls" | "blockExplorerUrls" | "iconUrls"> & { chainId: string }]>

Returns

Promise<Maybe<null>>

---

wallet_switchEthereumChain

▸ Private wallet_switchEthereumChain(payload): Promise<Maybe<null>>

Parameters

Name	Type
payload	JsonRpcRequest<"wallet_switchEthereumChain", [Omit<SwitchEthereumChainParameter, "chainId"> & { chainId: string }]>

Returns

Promise<Maybe<null>>

---

postMessage

▸ Private postMessage<T>(action, id, object): void

Type parameters

Name	Type
T	extends keyof PostMessagePayload

Parameters

Name	Type
action	T
id	number
object	PostMessagePayload[T][``"object"``]

Returns

void

---

_isJsonRpc

▸ Private _isJsonRpc(result): result is JsonRpcSuccess<UnknownResponse>

Parameters

Name	Type
result	JsonRpcSuccess<UnknownResponse> | Maybe<UnknownResponse>

Returns

result is JsonRpcSuccess<UnknownResponse>

---

sendResponse

▸ Private sendResponse<T>(id, result): void

Type parameters

Name	Type
T	extends keyof EthJsonRpc

Parameters

Name	Type
id	number
result	EthJsonRpc[T][``"response"``] | EthJsonRpc[T][``"response"``]["result"]

Returns

void

---

sendError

▸ Private sendError(id, error): void

Parameters

Name	Type
id	number
error	string | Error | ProviderRpcError

Returns

void

Interface: RPCHooks

Name	Type	Description
addEthereumChain	(payload): Promise<void>
switchEthereumChain	(payload): Promise<void>
postMessage	(payload): void
getAccounts	(): Promise<string[]>
sendTransaction	(payload): Promise<Maybe<string>>
createAccount	(): Promise<void>
rpcCall	(_payload: JsonRpcRequest<"unknown", unknown> | JsonRpcRequest<"eth_accounts", undefined> | JsonRpcRequest<"eth_coinbase", undefined> | JsonRpcRequest<"net_version", undefined> | JsonRpcRequest<"eth_chainId", undefined> | JsonRpcRequest<"eth_sign", [string, string]> | JsonRpcRequest<"personal_sign", [string]> | JsonRpcRequest<"personal_ecRecover", [string, string]> | JsonRpcRequest<"eth_signTypedData" | "eth_signTypedData_v3" | "eth_signTypedData_v4", [string, string]> | JsonRpcRequest<"eth_sendTransaction", [EthTransaction]> | JsonRpcRequest<"eth_sendRawTransaction", [string]> | JsonRpcRequest<"eth_signTransaction", [EthTransaction]> | JsonRpcRequest<"eth_requestAccounts", undefined> | JsonRpcRequest<"eth_privateRequestAccounts", undefined> | JsonRpcRequest<"eth_getTransactionCount", [string, BlockTag]> | JsonRpcRequest<"eth_gasPrice", undefined> | JsonRpcRequest<"eth_estimateGas", [EthTransaction]> | JsonRpcRequest<"wallet_watchAsset", WatchAssetParameter> | JsonRpcRequest<"wallet_addEthereumChain", [Pick<AddEthereumChainParameter, "chainName" | "nativeCurrency" | "rpcUrls" | "blockExplorerUrls" | "iconUrls"> & { chainId: string }]> | JsonRpcRequest<"wallet_switchEthereumChain", [Omit<SwitchEthereumChainParameter, "chainId"> & { chainId: string }]> | JsonRpcRequest<"eth_newFilter", never> | JsonRpcRequest<"eth_newBlockFilter", never> | JsonRpcRequest<"eth_newPendingTransactionFilter", never> | JsonRpcRequest<"eth_uninstallFilter", never> | JsonRpcRequest<"eth_subscribe", never>) => Promise<JsonRpcSuccess<UnknownResponse> | JsonRpcSuccess<string[]> | JsonRpcSuccess<string> | JsonRpcSuccess<boolean> | JsonRpcSuccess<null> | JsonRpcSuccess<never>>

addEthereumChain

▸ addEthereumChain(payload): Promise<void>

Parameters

Name	Type
payload	AddEthereumChainParameter

Returns

Promise<void>

---

switchEthereumChain

▸ switchEthereumChain(payload): Promise<void>

Parameters

Name	Type
payload	SwitchEthereumChainParameter

Returns

Promise<void>

---

postMessage

▸ postMessage(payload): void

Parameters

Name	Type
payload	ValueOf<PostMessagePayload>

Returns

void

---

getAccounts

▸ getAccounts(): Promise<string[]>

Returns

Promise<string[]>

---

sendTransaction

▸ sendTransaction(payload): Promise<Maybe<string>>

Parameters

Name	Type
payload	[EthTransaction]

Returns

Promise<Maybe<string>>

---

createAccount

▸ createAccount(): Promise<void>

Returns

Promise<void>

EthJsonRpc

Ƭ EthJsonRpc: Object

Type declaration

Name	Type
unknown	JsonRpc<"unknown", undefined | unknown, UnknownResponse>
eth_accounts	JsonRpc<"eth_accounts", undefined, Address[]>
eth_coinbase	JsonRpc<"eth_coinbase", undefined, Address>
net_version	JsonRpc<"net_version", undefined, ChainId>
eth_chainId	JsonRpc<"eth_chainId", undefined, ChainIdHex>
eth_sign	JsonRpc<"eth_sign", [Address, Message], SignedSignature>
personal_sign	JsonRpc<"personal_sign", [Message], SignedSignature>
personal_ecRecover	JsonRpc<"personal_ecRecover", [Message, SignedSignature], Address>
eth_signTypedData	JsonRpc<"eth_signTypedData" | "eth_signTypedData_v3" | "eth_signTypedData_v4", [Address, string], SignedSignature>
eth_sendTransaction	JsonRpc<"eth_sendTransaction", [EthTransaction], TransactionHash>
eth_sendRawTransaction	JsonRpc<"eth_sendRawTransaction", [SignedTransaction], TransactionHash>
eth_signTransaction	JsonRpc<"eth_signTransaction", [EthTransaction], SignedTransaction>
eth_requestAccounts	JsonRpc<"eth_requestAccounts", undefined, Address[]>
eth_privateRequestAccounts	JsonRpc<"eth_privateRequestAccounts", undefined, Address[]>
eth_getTransactionCount	JsonRpc<"eth_getTransactionCount", [Address, BlockTag], string>
eth_gasPrice	JsonRpc<"eth_gasPrice", undefined, string>
eth_estimateGas	JsonRpc<"eth_estimateGas", [EthTransaction], string>
wallet_watchAsset	JsonRpc<"wallet_watchAsset", WatchAssetParameter, boolean>
wallet_addEthereumChain	JsonRpc<"wallet_addEthereumChain", [Pick<AddEthereumChainParameter, "chainName" | "nativeCurrency" | "rpcUrls" | "blockExplorerUrls" | "iconUrls"> & { chainId: ChainIdHex }], null>
wallet_switchEthereumChain	JsonRpc<"wallet_switchEthereumChain", [Omit<SwitchEthereumChainParameter, "chainId"> & { chainId: ChainIdHex }], null>
eth_newFilter	JsonRpc<"eth_newFilter", never, never>
eth_newBlockFilter	JsonRpc<"eth_newBlockFilter", never, never>
eth_newPendingTransactionFilter	JsonRpc<"eth_newPendingTransactionFilter", never, never>
eth_uninstallFilter	JsonRpc<"eth_uninstallFilter", never, never>
eth_subscribe	JsonRpc<"eth_subscribe", never, never>

---

Interface: JsonRpc<Method, Params, Result>

Name	Type	Description
request	JsonRpcRequest<Method, Params>
response	JsonRpcSuccess<Result>

UnknownResponse

Ƭ UnknownResponse: boolean | string | object | (string | object)[]

---

Address

Ƭ Address: string

---

ChainId

Ƭ ChainId: string

---

ChainIdHex

Ƭ ChainIdHex: string

---

Message

Ƭ Message: string

---

SignedSignature

Ƭ SignedSignature: string

---

Interface: EthTransaction

Name	Type	Description
from	string
to?	string
gas?	string
gasPrice?	string
value?	string
data	string
nonce?	string

TransactionHash

Ƭ TransactionHash: string

---

SignedTransaction

Ƭ SignedTransaction: string

---

BlockTag

Ƭ BlockTag: "pending" | "latest"

---

Interface: WatchAssetParameter

Name	Type	Description
type	"ERC20"
options	Object

Interface: AddEthereumChainParameter

Name	Type	Description
chainId	number
chainName	string
nativeCurrency	Object
rpcUrls	string[]
blockExplorerUrls?	string[]
iconUrls?	string[]

Interface: SwitchEthereumChainParameter

Name	Type	Description
chainId	number

JsonRpcCallback

Ƭ JsonRpcCallback<T>: (error: ProviderRpcError | Error | null, response: T | null) => void

Type parameters

Name	Type
T	JsonRpcCallbackResponse

Type declaration

▸ (error, response): void

Parameters

Name	Type
error	ProviderRpcError | Error | null
response	T | null

Returns

void

---

Class: ProviderRpcError

Name	Type	Description
code	number
toString	(): string

toString

▸ toString(): string

Returns

string

JsonRpcCallbackResponse

Ƭ JsonRpcCallbackResponse: EthJsonRpcValue["response"][] | EthJsonRpcValue["response"] | EthJsonRpcValue["response"][``"result"``][] | EthJsonRpcValue["response"][``"result"``]

---

EthJsonRpcValue

Ƭ EthJsonRpcValue: Object

Type declaration

Name	Type
request	JsonRpcRequest<"unknown", unknown> | JsonRpcRequest<"eth_accounts", undefined> | JsonRpcRequest<"eth_coinbase", undefined> | JsonRpcRequest<"net_version", undefined> | JsonRpcRequest<"eth_chainId", undefined> | JsonRpcRequest<"eth_sign", [string, string]> | JsonRpcRequest<"personal_sign", [string]> | JsonRpcRequest<"personal_ecRecover", [string, string]> | JsonRpcRequest<"eth_signTypedData" | "eth_signTypedData_v3" | "eth_signTypedData_v4", [string, string]> | JsonRpcRequest<"eth_sendTransaction", [EthTransaction]> | JsonRpcRequest<"eth_sendRawTransaction", [string]> | JsonRpcRequest<"eth_signTransaction", [EthTransaction]> | JsonRpcRequest<"eth_requestAccounts", undefined> | JsonRpcRequest<"eth_privateRequestAccounts", undefined> | JsonRpcRequest<"eth_getTransactionCount", [string, BlockTag]> | JsonRpcRequest<"eth_gasPrice", undefined> | JsonRpcRequest<"eth_estimateGas", [EthTransaction]> | JsonRpcRequest<"wallet_watchAsset", WatchAssetParameter> | JsonRpcRequest<"wallet_addEthereumChain", [Pick<AddEthereumChainParameter, "chainName" | "nativeCurrency" | "rpcUrls" | "blockExplorerUrls" | "iconUrls"> & { chainId: string }]> | JsonRpcRequest<"wallet_switchEthereumChain", [Omit<SwitchEthereumChainParameter, "chainId"> & { chainId: string }]> | JsonRpcRequest<"eth_newFilter", never> | JsonRpcRequest<"eth_newBlockFilter", never> | JsonRpcRequest<"eth_newPendingTransactionFilter", never> | JsonRpcRequest<"eth_uninstallFilter", never> | JsonRpcRequest<"eth_subscribe", never>
response	JsonRpcSuccess<UnknownResponse> | JsonRpcSuccess<string[]> | JsonRpcSuccess<string> | JsonRpcSuccess<boolean> | JsonRpcSuccess<null> | JsonRpcSuccess<never>

---

Interface: JsonRpcRequest<Method, Params>

Name	Type	Description
jsonrpc	"2.0"
method	Method
id	number
params	Params extends undefined ? [] : Params

Interface: JsonRpcSuccess<T>

Name	Type	Description
result	Maybe<T>
jsonrpc	"2.0"
id	number

UnknownResponse

Ƭ UnknownResponse: boolean | string | object | (string | object)[]

---

BlockTag

Ƭ BlockTag: "pending" | "latest"

---

V3

• V3: Object = "V3"

---

V4

• V4: Object = "V4"

---

Class: ProviderRpcError

Name	Type	Description
code	number
toString	(): string

toString

▸ toString(): string

Returns

string