hardhat provider plugin

apps/remix-ide/src/app.js

@@ -29,6 +29,7 @@ const { OffsetToLineColumnConverter } = require('./lib/offsetToLineColumnConvert
 const QueryParams = require('./lib/query-params')
 const Storage = remixLib.Storage
 const RemixDProvider = require('./app/files/remixDProvider')
+const HardhatProvider = require('./app/tabs/hardhat-provider')
 const Config = require('./config')
 const modalDialogCustom = require('./app/ui/modal-dialog-custom')
 const modalDialog = require('./app/ui/modaldialog')
@@ -296,6 +297,7 @@ Please make a backup of your contracts and start using http://remix.ethereum.org
   makeUdapp(blockchain, compilersArtefacts, (domEl) => terminal.logHtml(domEl))
 
   const contextualListener = new ContextualListener({ editor })
+  const hardhatProvider = new HardhatProvider()
 
   engine.register([
     contentImport,
@@ -309,7 +311,8 @@ Please make a backup of your contracts and start using http://remix.ethereum.org
     contextualListener,
     terminal,
     web3Provider,
-    fetchAndCompile
+    fetchAndCompile,
+    hardhatProvider
   ])
 
   // LAYOUT & SYSTEM VIEWS

apps/remix-ide/src/app/tabs/hardhat-provider.js

+import * as packageJson from '../../../../../package.json'
+import { Plugin } from '@remixproject/engine'
+import Web3 from 'web3'
+
+const profile = {
+  name: 'hardhat-provider',
+  displayName: 'Hardhat Provider',
+  kind: 'provider',
+  description: 'Hardhat provider',
+  methods: ['sendAsync'],
+  version: packageJson.version
+}
+
+export default class HardhatProvider extends Plugin {
+    constructor () {
+      super(profile)
+      this.provider = new Web3.providers.HttpProvider('http://127.0.0.1:8545')
+    }
+
+    sendAsync (data) {
+        return new Promise((resolve, reject) => {
+          if (this.provider) {
+            this.provider[this.provider.sendAsync ? 'sendAsync' : 'send'](data, (error, message) => {
+              if (error) return reject(error)
+              resolve(message)
+            })
+          } else {
+            resolve({"jsonrpc": "2.0", "result": [], "id": data.id})
+          }
+        })
+      }
+}
+
+module.exports = HardhatProvider
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