SIP-32: Moving frontend code to the base of the repo (#9098)

* move assets out, get webpack dev working

* update docs to reference superset-frontend

* draw the rest of the owl

* fix docs

* fix webpack script

* rats

* correct docs

* fix tox dox

superset-frontend/spec/javascripts/modules/dates_spec.js

@@ -0,0 +1,80 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+import {
+  fDuration,
+  now,
+  epochTimeXHoursAgo,
+  epochTimeXDaysAgo,
+  epochTimeXYearsAgo,
+} from '../../../src/modules/dates';
+
+describe('fDuration', () => {
+  it('is a function', () => {
+    expect(typeof fDuration).toBe('function');
+  });
+
+  it('returns a string', () => {
+    expect(typeof fDuration(new Date(), new Date())).toBe('string');
+  });
+
+  it('returns the expected output', () => {
+    const output = fDuration('1496293608897', '1496293623406');
+    expect(output).toBe('00:00:14.50');
+  });
+});
+
+describe('now', () => {
+  it('is a function', () => {
+    expect(typeof now).toBe('function');
+  });
+
+  it('returns a number', () => {
+    expect(typeof now()).toBe('number');
+  });
+});
+
+describe('epochTimeXHoursAgo', () => {
+  it('is a function', () => {
+    expect(typeof epochTimeXHoursAgo).toBe('function');
+  });
+
+  it('returns a number', () => {
+    expect(typeof epochTimeXHoursAgo(1)).toBe('number');
+  });
+});
+
+describe('epochTimeXDaysAgo', () => {
+  it('is a function', () => {
+    expect(typeof epochTimeXDaysAgo).toBe('function');
+  });
+
+  it('returns a number', () => {
+    expect(typeof epochTimeXDaysAgo(1)).toBe('number');
+  });
+});
+
+describe('epochTimeXYearsAgo', () => {
+  it('is a function', () => {
+    expect(typeof epochTimeXYearsAgo).toBe('function');
+  });
+
+  it('returns a number', () => {
+    expect(typeof epochTimeXYearsAgo(1)).toBe('number');
+  });
+});