TS Optional

Typescript adapted Java Optional class.

The library barebone is generated with typescript-library-starter.

How to install

npm i @itfobos/ts-optional

API documentation

Documentation is available here.

Usage examples

Optional instance can be created with:

Optional.ofNullable(someValue)
Optional.of(nonNullableValue)
Optional.empty()

Can be used like:

  const entityUuid = Optional.of(response)
      .filter(resp => resp.isPresent)
      .map(responseToEntity)
      .map(entity => entity.uuid)
      .filter(isNotNullOrEmpty)
      .orElseGet(() => route.snapshot.queryParamMap.get('uuid') as string);

Supported Node versions

Automatically tested with Node versions:

Travis CI

To integrate with the CI:

github personal access tokens should be generated.
- Generated value should be defined in Travis as GH_TOKEN environment variable for master branch.
npm account email should be defined as NPM_EMAIL environment variable for all branches.
npm access tokens should be defined as NPM_TOKEN environment variable for all branches.