TS Optional

Typescript adapted Java Optional class.

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

How to install

npm i @eastbanctech/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:

• 10
• 11
• 12
• 14
• Latest version