Since early 2019, when I've started working on TypeScript, I've missed some routines from the Delphi RTL.
While TypeScript, which transpiles to JavaScript, has plenty of routines, working in multiple languages has caused me to choose to reimplement some of the Delphi RTL in TypeScript, and I've recently published it on Github, as well as made it available as an npm package.

Unfortunately for me, the Delphi package name has been taken on npm, so I've chosen to publish my npm package as delphirtl.

I find it necessary to say this: if you find any issues, please file an issue on Github, instead of posting a comment here, so it can be tracked.

Feel free to use it as you wish.