Convert dependencies in package.json to the exact versions currently installed.

analyze-deps.js

const fs = require('fs');
const prettier = require('prettier');

const package = JSON.parse(fs.readFileSync('package.json', 'UTF-8'));
function updateDeps(deps) {
	let newDeps = {};
	for (let name in deps) {
		const version = deps[name];
		if(!version.match(/^([0-9]|file:|git)/)) {
			const localPackage = JSON.parse(fs.readFileSync(`./node_modules/${name}/package.json`));
			console.log(`${name} is set to non-exact version: ${version}, installed ${localPackage.version}`);
			newDeps[name] = localPackage.version;
		}
	}
	return newDeps;
}
package.devDependencies = {
	...package.devDependencies,
	...updateDeps(package.devDependencies)
};
package.dependencies = {
	...package.dependencies,
	...updateDeps(package.dependencies)
};
fs.writeFileSync('package.json', prettier.format(JSON.stringify(package), {
	parser: "json",
	useTabs: true
}));