fix(RpcChannel): allow client to provide specVersion

this saves an extra call on RPC for optionally-known information (like the `chainId` case).
also fixed speck -> spec typo

src/channel/rpc_0_6.ts

@@ -48,12 +48,12 @@ export class RpcChannel {
 
  private chainId?: StarknetChainId;
 
- private speckVersion?: string;
+ private specVersion?: string;
 
  readonly waitMode: Boolean; // behave like web2 rpc and return when tx is processed
 
  constructor(optionsOrProvider?: RpcProviderOptions) {
- const { nodeUrl, retries, headers, blockIdentifier, chainId, waitMode } =
+ const { nodeUrl, retries, headers, blockIdentifier, chainId, specVersion, waitMode } =
  optionsOrProvider || {};
  if (Object.values(NetworkName).includes(nodeUrl as NetworkName)) {
  this.nodeUrl = getDefaultNodeUrl(nodeUrl as NetworkName, optionsOrProvider?.default);
@@ -66,6 +66,7 @@ export class RpcChannel {
  this.headers = { ...defaultOptions.headers, ...headers };
  this.blockIdentifier = blockIdentifier || defaultOptions.blockIdentifier;
  this.chainId = chainId;
+ this.specVersion = specVersion;
  this.waitMode = waitMode || false;
  this.requestId = 0;
  }
@@ -121,8 +122,8 @@ export class RpcChannel {
  }
 
  public async getSpecVersion() {
- this.speckVersion ??= (await this.fetchEndpoint('starknet_specVersion')) as StarknetChainId;
- return this.speckVersion;
+ this.specVersion ??= (await this.fetchEndpoint('starknet_specVersion')) as StarknetChainId;
+ return this.specVersion;
  }
 
  public getNonceForAddress(

src/types/provider/configuration.ts

@@ -9,6 +9,7 @@ export type RpcProviderOptions = {
  headers?: object;
  blockIdentifier?: BlockIdentifier;
  chainId?: StarknetChainId;
+ specVersion?: string;
  default?: boolean;
  waitMode?: boolean;
 };