A quick script to get the overall diff size between the current HEAD and master

diffsize.js

const child_process = require("child_process");

const output = child_process.execSync("git diff HEAD master --shortstat", { encoding: "utf8" });
// "6 files changed, 34 insertions(+), 4 deletions(-)"
const matches = output.match(/\s*\d+ files? changed, (\d+)\D+(\d+)?/)
// console.log(matches);

const sum = matches ? parseInt(matches[1]) + (parseInt(matches[2]) || 0) : 0;
console.log("\x1b[0m" + sum);