Refactor contracts and sandboxes

.env.example

@@ -0,0 +1,16 @@
+# Local: Ganache-cli
+NODE_URL=ws://localhost:8545
+STABLE_COIN_CONTRACT_ADDRESS=0x855d1c79Ad3fb086D516554Dc7187E3Fdfc1C79a
+
+# Rinkeby
+#NODE_URL=https://rinkeby.infura.io/v3/<your-api-key>
+#STABLE_COIN_CONTRACT_ADDRESS=0x9046451F7cF124c1d7d1832F76F5e98a33D1610E
+
+# Production
+#NODE_URL=https://mainnet.infura.io/v3/<your-api-key>
+#STABLE_COIN_CONTRACT_ADDRESS=<not-deployed-yet>
+
+# WEB: Front end. It can be any instance of this web https://github.com/gnosis/dex-react
+WEB_BASE_URL=https://dex-react
+
+NODE_URL=http://localhost:8545

package.json

@@ -19,7 +19,7 @@
     "lint": "eslint src --ext .ts,.js",
     "lint:fix": "eslint --fix . --ext .ts,.js",
     "verify": "npm run lint && npm run test",
-    "sandbox": "DEBUG=ERROR-*,WARN-*,INFO-*,DEBUG-*,-DEBUG-helper*,-DEBUG-util* nodemon -r dotenv/config"
+    "sandbox": "DEBUG=ERROR-*,WARN-*,INFO-*,DEBUG-*,-DEBUG-helper*,-DEBUG-util* nodemon -r dotenv/config -r tsconfig-paths/register"
   },
   "husky": {
     "hooks": {
@@ -62,6 +62,7 @@
     "rimraf": "^3.0.0",
     "ts-jest": "^24.1.0",
     "ts-node": "^8.4.1",
+    "tsconfig-paths": "^3.9.0",
     "typescript": "^3.7.2"
   }
 }

src/contracts/Erc20ABI.ts

@@ -0,0 +1,225 @@
+import { AbiItem } from 'web3-utils'
+
+const Erc20Abi: AbiItem[] = [
+  {
+    constant: true,
+    inputs: [],
+    name: 'name',
+    outputs: [
+      {
+        name: '',
+        type: 'string'
+      }
+    ],
+    payable: false,
+    stateMutability: 'view',
+    type: 'function'
+  },
+  {
+    constant: false,
+    inputs: [
+      {
+        name: '_spender',
+        type: 'address'
+      },
+      {
+        name: '_value',
+        type: 'uint256'
+      }
+    ],
+    name: 'approve',
+    outputs: [
+      {
+        name: '',
+        type: 'bool'
+      }
+    ],
+    payable: false,
+    stateMutability: 'nonpayable',
+    type: 'function'
+  },
+  {
+    constant: true,
+    inputs: [],
+    name: 'totalSupply',
+    outputs: [
+      {
+        name: '',
+        type: 'uint256'
+      }
+    ],
+    payable: false,
+    stateMutability: 'view',
+    type: 'function'
+  },
+  {
+    constant: false,
+    inputs: [
+      {
+        name: '_from',
+        type: 'address'
+      },
+      {
+        name: '_to',
+        type: 'address'
+      },
+      {
+        name: '_value',
+        type: 'uint256'
+      }
+    ],
+    name: 'transferFrom',
+    outputs: [
+      {
+        name: '',
+        type: 'bool'
+      }
+    ],
+    payable: false,
+    stateMutability: 'nonpayable',
+    type: 'function'
+  },
+  {
+    constant: true,
+    inputs: [],
+    name: 'decimals',
+    outputs: [
+      {
+        name: '',
+        type: 'uint8'
+      }
+    ],
+    payable: false,
+    stateMutability: 'view',
+    type: 'function'
+  },
+  {
+    constant: true,
+    inputs: [
+      {
+        name: '_owner',
+        type: 'address'
+      }
+    ],
+    name: 'balanceOf',
+    outputs: [
+      {
+        name: 'balance',
+        type: 'uint256'
+      }
+    ],
+    payable: false,
+    stateMutability: 'view',
+    type: 'function'
+  },
+  {
+    constant: true,
+    inputs: [],
+    name: 'symbol',
+    outputs: [
+      {
+        name: '',
+        type: 'string'
+      }
+    ],
+    payable: false,
+    stateMutability: 'view',
+    type: 'function'
+  },
+  {
+    constant: false,
+    inputs: [
+      {
+        name: '_to',
+        type: 'address'
+      },
+      {
+        name: '_value',
+        type: 'uint256'
+      }
+    ],
+    name: 'transfer',
+    outputs: [
+      {
+        name: '',
+        type: 'bool'
+      }
+    ],
+    payable: false,
+    stateMutability: 'nonpayable',
+    type: 'function'
+  },
+  {
+    constant: true,
+    inputs: [
+      {
+        name: '_owner',
+        type: 'address'
+      },
+      {
+        name: '_spender',
+        type: 'address'
+      }
+    ],
+    name: 'allowance',
+    outputs: [
+      {
+        name: '',
+        type: 'uint256'
+      }
+    ],
+    payable: false,
+    stateMutability: 'view',
+    type: 'function'
+  },
+  {
+    payable: true,
+    stateMutability: 'payable',
+    type: 'fallback'
+  },
+  {
+    anonymous: false,
+    inputs: [
+      {
+        indexed: true,
+        name: 'owner',
+        type: 'address'
+      },
+      {
+        indexed: true,
+        name: 'spender',
+        type: 'address'
+      },
+      {
+        indexed: false,
+        name: 'value',
+        type: 'uint256'
+      }
+    ],
+    name: 'Approval',
+    type: 'event'
+  },
+  {
+    anonymous: false,
+    inputs: [
+      {
+        indexed: true,
+        name: 'from',
+        type: 'address'
+      },
+      {
+        indexed: true,
+        name: 'to',
+        type: 'address'
+      },
+      {
+        indexed: false,
+        name: 'value',
+        type: 'uint256'
+      }
+    ],
+    name: 'Transfer',
+    type: 'event'
+  }
+]
+export default Erc20Abi

src/contracts/Erc20Contract.ts

@@ -0,0 +1,29 @@
+import BN from 'bn.js'
+
+import { TransactionObject } from 'contracts/types'
+import { Contract } from 'web3-eth-contract'
+
+export interface Erc20Contract extends Contract {
+  clone(): Erc20Contract
+
+  methods: {
+    totalSupply(): TransactionObject<string>
+    decimals(): TransactionObject<string>
+    symbol(): TransactionObject<string>
+    name(): TransactionObject<string>
+
+    balanceOf(owner: string): TransactionObject<string, [string]>
+
+    allowance(owner: string, spender: string): TransactionObject<string, [string, string]>
+
+    approve(spender: string, value: number | string | BN): TransactionObject<boolean, [string, string | number | BN]>
+
+    transfer(to: string, value: number | string | BN): TransactionObject<boolean, [string, string | number | BN]>
+
+    transferFrom(
+      from: string,
+      to: string,
+      value: number | string | BN,
+    ): TransactionObject<boolean, [string, string, string | number | BN]>
+  }
+}