Re-run Jest when jest.config changes - jestjs

Question

I am working with a jests.config.js file:
// jest.config.js
module.exports = {
verbose: true,
setupFiles: ["./helpers/setup/environment.js"],
testMatch: ["**/__tests__/v2/tests.cloud.js"],
globals: {
_: true,
},
watchPathIgnorePatterns: ["./src/dataset", "./logs"],
};
I run Jest with watch:
jest --watch
In order to develop each test on its own I change the test file on testMatch every time I move on to the next test I am writing. Is there a way for the watch to reload the Jest config itself when the configuration file changes?

Answer 1

There are plenty other options
CLI [TestPathPattern]
if you run jest --help you'll see you can pass TestPathPattern to match test files
$ jest --help
Usage: jest.js [--config=<pathToConfigFile>] [TestPathPattern]
--onlyChanged, -o
Jest will attempt to run only tests related to the changed (in the current repository) files.
watch mode (p)
While in --watch mode you can press P and enter regex to select which file to run

Answer 2

Ended up writing a short NodeJS script:
const fs = require("fs");
const { spawn } = require("child_process");
const filename = "../jest.config.js";
let jest;
const run = () => {
if (jest) {
jest.kill();
}
jest = spawn("jest", ["--watch"], { stdio: "inherit" });
};
run();
fs.watch(filename, run);
process.on("SIGINT", function() {
console.log("Caught interrupt signal");
process.exit();
});