Rename RippleAPI client to Client (#1520)

* rename RippleAPI -> XrplClient

* more renames

* move API stuff to client folder

* rename all api -> client

* fix tests

* make tests run

* fix integ tests

* fix urls

* fix merge issues

* XrplClient -> Client

* fix merge issues

* rename xrpl-client npm symlink to xrpl-local

test/client/requestNextPage/index.ts

@@ -0,0 +1,38 @@
+import assert from 'assert-diff'
+import {LedgerData} from 'xrpl-local/common/types/objects'
+import {assertRejects, TestSuite} from '../../utils'
+
+/**
+ * Every test suite exports their tests in the default object.
+ * - Check out the "TestSuite" type for documentation on the interface.
+ * - Check out "test/client/index.ts" for more information about the test runner.
+ */
+export default <TestSuite>{
+  'requests the next page': async (client, address) => {
+    const response = await client.request('ledger_data')
+    const responseNextPage = await client.requestNextPage<LedgerData>(
+      'ledger_data',
+      {},
+      response
+    )
+    assert.equal(
+      responseNextPage.state[0].index,
+      '000B714B790C3C79FEE00D17C4DEB436B375466F29679447BA64F265FD63D731'
+    )
+  },
+
+  'rejects when there are no more pages': async (client, address) => {
+    const response = await client.request('ledger_data')
+    const responseNextPage = await client.requestNextPage(
+      'ledger_data',
+      {},
+      response
+    )
+    assert(!client.hasNextPage(responseNextPage))
+    await assertRejects(
+      client.requestNextPage('ledger_data', {}, responseNextPage),
+      Error,
+      'response does not have a next page'
+    )
+  }
+}