Reducing size of React / MERN Stack Bundle - mainly removing duplicative D3

When I run npm run-script build to bundle my React app, once the bundle is complete the following webpack bundle analyzer launches which shows what my app's bundle is comprised of:

Although I am not positive of it, this seems like a fairly large build, which may be slowing down my app.

It appears that d3 is one of the largest parts of my bundle, and it also appears that d3 is being bundled twice - once on its own, and once bundled with d3-tip. (My React app is a graphing / d3 intensive application, and I use several d3 modules throughout the app. I use d3-tip as my tooltip library for my graphs). How can i fix this so that d3 is only bundled once? And also, if it would help the speed of my app significantly, how can i bundle just the d3 modules that i use, rather than all of d3?

My index.js seems pretty large as well on the right, and I have no idea if that is ordinary or not. In fact, I have very little idea as to what is considered a large/bulky build, vs. a small/compact build. I do know that the size of my build folder is ~53MBs.

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----EDIT ----- Updating the post before bounty. I removed d3-tip, and switched over to using ordinary divs with hover as tooltips. Here's the latest build:

... my main question for the bounty is then:

1: How can i bundle only the modules in d3, react-spinners, etc. that are actually used in my app? I've heard about tree-shaking, but could not find a good source on how to tree-shake d3 in the app. My components that use d3 generally have the following in the top few lines:

import React, { Component } from 'react';
import * as d3 from 'd3';
import * as d3Hexbin from 'd3-hexbin';

class SomeClassHere extends Component { ...

...and I assume I'd have to no longer import d3 in this manner, but I'm not sure if simply changing all of the imports will change the bundle as well, or if I have to do something else to remove the modules that aren't used.

2: Is there a smaller pdf-generation library to use, rather than kendo-react-pdf? And likewise is there something smaller than react-datepicker? I only have a single datepicker in my app, and the entire react-datepicker library seems like overkill?

3: Lastly, what is a size for a bundle that i should strive for? The screenshot of the bundle show the stat size, parsed size, and gzipped size for most of the app (excluding just the blue chunks which is the code ive written in /src i think?). Is this big?

Thanks in advance for your help with this!!

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