feat: allow to sendTransaction and get TransactionReceipt

.gitignore

@@ -0,0 +1 @@
+node_modules

README.md

@@ -1 +1,47 @@
-# leap-provider
+# leap-provider
+
+Ethers.js provider to work with Leap Network.
+
+## Install
+
+```sh
+yarn add leap-provider
+```
+
+## Usage
+
+Connect to a Wallet:
+
+```js
+const LeapProvider = require('leap-provider');
+const provider = new LeapProvider('httpd://testnet-node.leapdao.org');
+
+// can be passed in a Wallet
+const plasmaWallet = new ethers.Wallet(privKey, provider);
+
+// or connected to existing wallet
+const otherWallet = Wallet.createRandom();
+otherWallet.connect(provider);
+```
+
+Send transaction to Leap Network:
+
+```js
+const LeapProvider = require('leap-provider');
+const provider = new LeapProvider('httpd://testnet-node.leapdao.org');
+
+// create some LeapTransaction
+const tx = Tx.transfer(
+  ...
+);
+
+// tx should be signed
+tx.signAll(wallet.privateKey);
+
+// send via provider
+const resp = await wallet.provider.sendTransaction(tx);
+
+// wait for inclusion, you will get a proper TransactionReceipt once tx is included in a block
+const receipt = await resp.wait();
+console.log(receipt);
+```

index.js

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+const ethers = require('ethers');
+
+class LeapProvider extends ethers.providers.JsonRpcProvider {
+
+  /**
+   * Overrides `BaseProvider.sendTransaction` to exclude tx parsing
+   * and resolveProperties.
+   * 
+   * Given signedTransaction is non-standard, it is a LeapTransaction
+   * as defined in leap-core, so we cannot parse. 
+   * We don't need resolveProperties as LeapTransaction cannot
+   * have property promise.
+   * 
+   * See: https://github.com/ethers-io/ethers.js/blob/7075c8c2352ec306b5679da6fbe7c2ddf7bd65d1/src.ts/providers/base-provider.ts#L873
+   * @param {LeapTransaction} signedTransaction signed tx
+   */
+  sendTransaction(signedTransaction) {
+    return this.ready.then(() => {
+      let params = { signedTransaction: signedTransaction.hex() };
+      return this.perform('sendTransaction', params).then((hash) => {
+          return this._wrapTransaction({ hash: signedTransaction.hash() }, hash);
+      }, function (error) {
+          error.transaction = { raw: signedTransaction.hex() };
+          error.transactionHash = signedTransaction.hash();
+          throw error;
+      });
+    });
+  }
+
+}
+
+module.exports = LeapProvider;

package.json

@@ -0,0 +1,12 @@
+{
+  "name": "leap-provider",
+  "version": "1.0.0",
+  "description": "Ethers.js Provider for Leap Network",
+  "main": "index.js",
+  "repository": "[email protected]:leapdao/leap-provider.git",
+  "author": "Kosta Korenkov <[email protected]>",
+  "license": "MIT",
+  "dependencies": {
+    "ethers": "^4.0.33"
+  }
+}

yarn.lock

@@ -0,0 +1,100 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
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+
+[email protected]:
+  version "3.0.0"
+  resolved "https://registry.yarnpkg.com/aes-js/-/aes-js-3.0.0.tgz#e21df10ad6c2053295bcbb8dab40b09dbea87e4d"
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+[email protected]:
+  version "6.3.3"
+  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.3.3.tgz#5482d9646d54bcb89fd7d994fc9e2e9568876e3f"
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+    brorand "^1.0.1"
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+    inherits "^2.0.1"
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+ethers@^4.0.33:
+  version "4.0.33"
+  resolved "https://registry.yarnpkg.com/ethers/-/ethers-4.0.33.tgz#f7b88d2419d731a39aefc37843a3f293e396f918"
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+    aes-js "3.0.0"
+    bn.js "^4.4.0"
+    elliptic "6.3.3"
+    hash.js "1.1.3"
+    js-sha3 "0.5.7"
+    scrypt-js "2.0.4"
+    setimmediate "1.0.4"
+    uuid "2.0.1"
+    xmlhttprequest "1.8.0"
+
+[email protected]:
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+
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+    inherits "^2.0.3"
+    minimalistic-assert "^1.0.1"
+
+inherits@^2.0.1, inherits@^2.0.3:
+  version "2.0.4"
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+  resolved "https://registry.yarnpkg.com/minimalistic-assert/-/minimalistic-assert-1.0.1.tgz#2e194de044626d4a10e7f7fbc00ce73e83e4d5c7"
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+[email protected]:
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+  resolved "https://registry.yarnpkg.com/scrypt-js/-/scrypt-js-2.0.4.tgz#32f8c5149f0797672e551c07e230f834b6af5f16"
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+[email protected]:
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+  resolved "https://registry.yarnpkg.com/setimmediate/-/setimmediate-1.0.4.tgz#20e81de622d4a02588ce0c8da8973cbcf1d3138f"
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