Node js script to set exact dependencies based on what is installed in node_modules.

vesionify.js

'use strict';

const fs = require('fs');

const pwd = process.cwd();
const pkg = require(`${pwd}/package.json`);

for (const key of [
  'devDependencies',
  'dependencies',
  'peerDependencies',
  'optionalDependencies',
]) {
  const entry = pkg[key];

  if (!entry) {
    continue;
  }

  for (const [dep, _version] of Object.entries(entry)) {
    const localpkg = fs.readFileSync(
      `${pwd}/node_modules/${dep}/package.json`,
      {
        encoding: 'utf8',
      }
    );

    const version = JSON.parse(localpkg).version;

    pkg[key][dep] = version;
  }
}

console.log(JSON.stringify(pkg, null, 2));