How to build d3.js from source?

@rollin 

To build d3.js from source, follow these steps:

Step 1: Clone the d3.js repository

• Open a terminal or command prompt.
• Navigate to the directory where you want to clone the d3.js repository.
• Clone the repository using the following command: git clone https://github.com/d3/d3.git

Step 2: Install Node.js and npm

• Ensure that you have Node.js and npm (Node Package Manager) installed on your system.
• You can download Node.js from the official website: https://nodejs.org/en/

Step 3: Install project dependencies

• Navigate to the cloned d3.js repository folder.
• Install the project dependencies using the following command: npm install

Step 4: Build the library

• After the installation of dependencies is complete, you can build the library using the following command: npm run build

Step 5: Use the built library

• Once the build process is finished, you will find the built d3.js library file in the dist directory, named d3.js or d3.min.js.
• You can include this library in your HTML files using a script tag.

That's it! You have now successfully built d3.js from source.