Support web3@^1.0.0-beta.38

As of 1.0.0-beta.38, web3 ships directly with typescript typings (they seem to no longer be published through @types/web3 as of now). Ideally these typings would be used.

After this version of web3, typechain now throws a bunch of errors with the web3-1.0 target:

build/wrappers/A.d.ts:4:58 - error TS2307: Cannot find module 'web3/eth/contract'.

4 import Contract, { CustomOptions, contractOptions } from "web3/eth/contract";
                                                           ~~~~~~~~~~~~~~~~~~~

build/wrappers/A.d.ts:5:46 - error TS2307: Cannot find module 'web3/eth/types'.

5 import { TransactionObject, BlockType } from "web3/eth/types";
                                               ~~~~~~~~~~~~~~~~

build/wrappers/A.d.ts:6:10 - error TS2305: Module '"web3/types"' has no exported member 'Callback'.

6 import { Callback, EventLog } from "web3/types";
           ~~~~~~~~

build/wrappers/A.d.ts:6:20 - error TS2305: Module '"/web3/types"' has no exported member 'EventLog'.

6 import { Callback, EventLog } from "web3/types";
                     ~~~~~~~~

build/wrappers/A.d.ts:8:26 - error TS2307: Cannot find module 'web3/providers'.

8 import { Provider } from "web3/providers";

[gitcoinbot]

Issue Status: 1. Open 2. Started 3. Submitted 4. Done

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Work has been started.

These users each claimed they can complete the work by 12 months from now. Please review their action plans below:

1) cryptokat has started work.

https://github.com/ethereum-ts/TypeChain/pull/141

Learn more on the Gitcoin Issue Details page.

[eswarasai]

@krzkaczor – I’d like to know your thoughts on moving towards types that are being maintained by web3 internally within their package.