embark/site/source/docs/web3js.md

title: Web3.js Documentation
---

The documentation for Web3.js can be found [here](https://web3js.readthedocs.io/en/v1.2.6/)
chore: move embark site into mono repo 2019-04-18 10:33:52 +00:00			`title: Web3.js Documentation`
			`---`

build(deps): bump web3[-] from 1.2.4 to 1.2.6 Remove `bignumber.js` workaround (in the root, from PR #2152) because it's no longer needed (verified locally). Remove the `"skipLibCheck"` workaround (in `packages/plugins/solidity-tests`, from PR #2152) because it's no longer needed (verified locally). Refactor a typing in `packages/plugins/geth`. What's happening is that in web3 v1.2.4 `sendTransaction` has a return type of `PromiEvent<TransactionReceipt>` but in v1.2.6 it has a return type of `PromiEvent<TransactionReceipt \| TransactionRevertInstructionError>`. Compare: [v1.2.4/packages/web3-eth/types/index.d.ts#L291-L294](https://github.com/ethereum/web3.js/blob/v1.2.4/packages/web3-eth/types/index.d.ts#L291-L294) * [v1.2.6/packages/web3-eth/types/index.d.ts#L295-L298](https://github.com/ethereum/web3.js/blob/v1.2.6/packages/web3-eth/types/index.d.ts#L295-L298) The problem is that the `TransactionRevertInstructionError` type doesn't have a `transactionHash` property. Since at present the code in `packages/plugins/geth/src/devtxs.ts` only deals with the success case re: `sendTransaction`, import the `TransactionReceipt` type from `web3-eth` and cast the resolved return value's type using TypeScript's `as` operator. 2020-02-02 20:22:53 +00:00			`The documentation for Web3.js can be found [here](https://web3js.readthedocs.io/en/v1.2.6/)`