Removed provider engine support

Author: holgerd77

README.md

@@ -82,27 +82,13 @@ Please go to [./docs/classes/ethereumhdkey.md](./docs/classes/ethereumhdkey.md)
 
 ## Provider Engine
 
-The Wallet can be easily plugged into [provider-engine](https://github.com/metamask/provider-engine) to provide signing:
+Provider Engine is
+[not very actively maintained](https://github.com/MetaMask/web3-provider-engine#web3-providerengine)
+and support has been removed along `v1.0.0` release, see
+issue [#115](https://github.com/ethereumjs/ethereumjs-wallet/issues/115) for context.
 
-Node.js / ES5:
-
-```js
-const { WalletSubprovider } = require('ethereumjs-wallet')
-
-<engine>.addProvider(new WalletSubprovider(<wallet instance>))
-```
-
-ESM / TypeScript:
-
-```js
-import { WalletSubprovider } from 'ethereumjs-wallet'
-
-<engine>.addProvider(new WalletSubprovider(<wallet instance>))
-```
-
-Note it only supports the basic wallet. With a HD Wallet, call `getWallet()` first.
-
-Please go to [./docs/classes/walletsubprovider.md](./docs/README.md) for more info.
+You can use the the old `src/provider-engine.ts` code (see associated PR) as some boilerplate
+for your own integration if needed.
 
 ### Remarks about `toV3`
 

package.json

@@ -51,8 +51,7 @@
     "hdkey": "^1.1.1",
     "randombytes": "^2.0.6",
     "utf8": "^3.0.0",
-    "uuid": "^3.3.2",
-    "web3-provider-engine": "^15.0.7"
+    "uuid": "^3.3.2"
   },
   "devDependencies": {
     "@ethereumjs/config-nyc": "^1.1.1",

src/index.ts

@@ -2,7 +2,6 @@ import * as crypto from 'crypto'
 import * as ethUtil from 'ethereumjs-util'
 
 export { default as hdkey } from './hdkey'
-export { default as WalletSubprovider } from './provider-engine'
 export { default as thirdparty } from './thirdparty'
 
 const bs58check = require('bs58check')