build: Initial linting setup (#1560)

* sets up linting config and runs `yarn lint --fix` once, so that all changes will show up correctly in future PRs.

* Note that there are still a lot of linter errors.

test/models/setRegularKey.ts

@@ -1,42 +1,43 @@
-import { ValidationError } from 'xrpl-local/common/errors'
-import { verifySetRegularKey } from './../../src/models/transactions/setRegularKey'
-import { assert } from 'chai'
+import { assert } from "chai";
+
+import { ValidationError } from "xrpl-local/common/errors";
+
+import { verifySetRegularKey } from "../../src/models/transactions/setRegularKey";
 
 /**
- * SetRegularKey Transaction Verification Testing
+ * SetRegularKey Transaction Verification Testing.
  *
- * Providing runtime verification testing for each specific transaction type
+ * Providing runtime verification testing for each specific transaction type.
  */
-describe('SetRegularKey Transaction Verification', function () {
-    let account 
+describe("SetRegularKey Transaction Verification", function () {
+  let account;
 
-    beforeEach(() => {
-        account = {
-            TransactionType : "SetRegularKey",
-            Account : "rf1BiGeXwwQoi8Z2ueFYTEXSwuJYfV2Jpn",
-            Fee : "12",
-            Flags : 0,
-            RegularKey : "rAR8rR8sUkBoCZFawhkWzY4Y5YoyuznwD"
-        } as any
-    })
+  beforeEach(function () {
+    account = {
+      TransactionType: "SetRegularKey",
+      Account: "rf1BiGeXwwQoi8Z2ueFYTEXSwuJYfV2Jpn",
+      Fee: "12",
+      Flags: 0,
+      RegularKey: "rAR8rR8sUkBoCZFawhkWzY4Y5YoyuznwD",
+    } as any;
+  });
 
-    it (`verifies valid SetRegularKey`, () => {
-        assert.doesNotThrow(() => verifySetRegularKey(account))
-    })
+  it(`verifies valid SetRegularKey`, function () {
+    assert.doesNotThrow(() => verifySetRegularKey(account));
+  });
 
-    it (`verifies w/o SetRegularKey`, () => {
-        account.RegularKey = undefined
-        assert.doesNotThrow(() => verifySetRegularKey(account))
-    })
+  it(`verifies w/o SetRegularKey`, function () {
+    account.RegularKey = undefined;
+    assert.doesNotThrow(() => verifySetRegularKey(account));
+  });
 
-    it (`throws w/ invalid RegularKey`, () => {
-        account.RegularKey = 12369846963
+  it(`throws w/ invalid RegularKey`, function () {
+    account.RegularKey = 12369846963;
 
-        assert.throws(
-            () => verifySetRegularKey(account),
-            ValidationError,
-            "SetRegularKey: RegularKey must be a string"
-        )
-    })
-
-})
+    assert.throws(
+      () => verifySetRegularKey(account),
+      ValidationError,
+      "SetRegularKey: RegularKey must be a string"
+    );
+  });
+});