Make d3 an npm-managed dependency

Closes #91

src/common/utilities.js

@@ -1,4 +1,5 @@
-/* global d3 */
+import { timeFormat, timeParse } from 'd3'
+
 /**
   * Get URI params to start with predefined set of
   * https://stackoverflow.com/questions/901115/how-can-i-get-query-string-values-in-javascript
@@ -67,14 +68,14 @@ export function parseDate (datetime) {
 }
 
 export function formatterWithYear (datetime) {
-  return d3.timeFormat('%d %b %Y, %H:%M')(datetime)
+  return timeFormat('%d %b %Y, %H:%M')(datetime)
 }
 
 export function formatter (datetime) {
-  return d3.timeFormat('%d %b, %H:%M')(datetime)
+  return timeFormat('%d %b, %H:%M')(datetime)
 }
 
-export const parseTimestamp = ts => d3.timeParse('%Y-%m-%dT%H:%M:%S')(ts)
+export const parseTimestamp = ts => timeParse('%Y-%m-%dT%H:%M:%S')(ts)
 
 export function compareTimestamp (a, b) {
   return (parseTimestamp(a.timestamp) > parseTimestamp(b.timestamp))

src/components/Timeline.jsx

@@ -1,6 +1,6 @@
-/* global d3 */
 import React from 'react'
 import { connect } from 'react-redux'
+import * as d3 from 'd3'
 import * as selectors from '../selectors'
 import hash from 'object-hash'
 

src/components/TimelineAxis.jsx

@@ -1,5 +1,5 @@
-/* global d3 */
 import React from 'react'
+import * as d3 from 'd3'
 
 class TimelineAxis extends React.Component {
   constructor () {

src/components/TimelineCategories.jsx

@@ -1,5 +1,5 @@
-/* global d3 */
 import React from 'react'
+import * as d3 from 'd3'
 
 class TimelineCategories extends React.Component {
   constructor () {

src/reducers/utils/helpers.js

@@ -1,12 +1,13 @@
-/* global d3 */
+import { timeFormat, timeParse } from 'd3'
+
 export function parseDateTimes (arrayToParse) {
   const parsedArray = []
 
   arrayToParse.forEach(item => {
     let incomingDateTime = `${item.date}T00:00`
     if (item.time) incomingDateTime = `${item.date}T${item.time}`
-    const parser = d3.timeParse(process.env.INCOMING_DATETIME_FORMAT)
-    item.timestamp = d3.timeFormat('%Y-%m-%dT%H:%M:%S')(parser(incomingDateTime))
+    const parser = timeParse(process.env.INCOMING_DATETIME_FORMAT)
+    item.timestamp = timeFormat('%Y-%m-%dT%H:%M:%S')(parser(incomingDateTime))
 
     parsedArray.push(item)
   })