Describe the bug

When --experimental-strip-types is enabled (enabled by default in recent node versions), loading config files written in TypeScript fail with Error: Cannot find module 'ts-node'.

Expected behavior
Loading TypeScript config files should work out of the box when --experimental-strip-types is enabled. In fact, if I comment this code, I'm able to load config correctly, without the extra dependency.

Parser.tsParser = function(filename, content) {
  // if (!require.extensions['.ts']) {
  //   require(TS_DEP).register({
  //     lazy: true,
  //     ignore: ['(?:^|/)node_modules/', '.*(?<!\.ts)$'],
  //     transpileOnly: true,
  //     compilerOptions: {
  //       allowJs: true,
  //     }
  //   });
  // }

One possible solution is to check process.features.typescript === 'strip', and also skip loading ts-node if it evaluates to true.

Please tell us about your environment:

• node-config version: 4.0.0
• node-version: 24.14.0