feat/support-for-batch-txn

[teye]

Description

This pr features support for sending batch transactions. This is an update to the previous batch txn PR by refactoring the batch JSON RPC calls into a proper single JSON RPC calls.

The changes in packages/zilliqa-js-core/src/net.ts and packages/zilliqa-js-core/src/providers/http.ts allows other APIs to potentially use the batch JSON RPC call in the near future if required.

New Methods

signBatch(txList: Transaction[]): Promise<Transaction[]>
createBatchTransaction(txList : Transaction[], maxAttempts? : number, interval? : interval) : Promise<Transaction[]>
createBatchTransactionWithoutConfirm(signedTxList : Transaction[]) : Promise<Transaction[]>

Tests

node examples/node/createBatchTransaction.js
node examples/node/createBatchTransactionWithoutConfirm.js

[codecov-io]

Codecov Report

Merging #280 (59bd6aa) into dev (e88d379) will increase coverage by 0.55%.
The diff coverage is 89.88%.

@@            Coverage Diff             @@
##              dev     #280      +/-   ##
==========================================
+ Coverage   78.04%   78.60%   +0.55%     
==========================================
  Files          45       45              
  Lines        1681     1767      +86     
  Branches      272      285      +13     
==========================================
+ Hits         1312     1389      +77     
- Misses        365      373       +8     
- Partials        4        5       +1     

Impacted Files	Coverage Δ
packages/zilliqa-js-core/src/types.ts	100.00% <ø> (ø)
packages/zilliqa-js-core/src/net.ts	95.77% <71.42%> (-2.69%)	⬇️
packages/zilliqa-js-account/src/wallet.ts	81.10% <84.21%> (+0.54%)	⬆️
packages/zilliqa-js-blockchain/src/chain.ts	63.04% <90.00%> (+7.48%)	⬆️
packages/zilliqa-js-account/src/util.ts	94.44% <100.00%> (+1.58%)	⬆️
packages/zilliqa-js-core/src/providers/http.ts	93.54% <100.00%> (+4.65%)	⬆️

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