clone all d3 packages to local dev box

clone-d3-packages.js

const fs = require("fs");
const path = require("path");
const cp = require("child_process");

const clone = (package) => {
    if (!fs.existsSync(package)) {
        console.log(`Start to clone ${package}`);
        cp.execSync(`git clone https://github.com/d3/${package}.git --depth=1`);
    }
}

clone("d3");

const packageFile = fs.readFileSync(path.join(__dirname, "d3", "package.json"), { encoding: "utf8" });

if (packageFile) {
    dependencies = (JSON.parse(packageFile)).dependencies;

    packages = Object.keys(dependencies);

    packages.forEach(package => {
        clone(package);
    });
}