Useful TypeScript Functions

A dependency-free collection of useful functions for applications in TypeScript. (Actually, you need some peer libraries if you use some of the functions). Written in Typescript.

• Objects for working with objects
• Functions run asynchronous functions one after each other
• Logger a structured log file generator which can easily be tested
• Server to simplify creation of express.js servers and routers
• Files to help handle files, especially image previews
• Mailer for sending html templated emails easily
• Streams for easier handling of streams of data

Upgrade from version 4.4.0

Starting with version 4.5.0, the Files module uses the yaml package instead of yamljs for YAML parsing. If you use the readYAML() or readConfig() functions, you need to:

• Replace yamljs with yaml in your dependencies: npm uninstall yamljs && npm install yaml
• No code changes are required - the API remains the same

Upgrade from version 3

Version 4 of useful-typescript-functions only works with ESM.

Upgrade from version 2

There are some breaking changes of version 3.

• If you use Server, you should have a look into the this upgrade info.
• Previously deprecated functions flattenObject() and inflateObject() are now removed. You now need to move to flatten and inflate() now.
• Instead of using CSVLogger to read and write CSV files, you should now use Streams module and its CSV related transforms.
• The CSVLogger module is now removed in favour of using Logger and its function createCSVTransport(). Read about that here