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require(esm) Backported to Node.js 20, Paving the Way for ESM-Only Packages
require(esm) backported to Node.js 20, easing the transition to ESM-only packages and reducing complexity for developers as Node 18 nears end-of-life.
Some useful functions for dealing with Some
and None
.
Install bs-option
using yarn:
yarn add bs-option
Then add bs-option
to bs-dependencies
in bsconfig.json
.
let someValue = Some(42);
let fourtyTwo = Option.unwrap(someValue);
Option.isSome(o)
- returns true
if o
is Some(a)
Option.isNone(o)
- returns true
if o
is None
Option.unwrap(o)
- returns a
in Some(a)
or raises Option.UnexpectedNone
Option.expect(o, message)
- returns a
in Some(a)
or raises Option.ExpectedSome(message)
Option.map(o, f)
- returns Some(f(a))
for Some(a)
, or None
if o
is None
Option.unwrapOr(o, default)
- same as unwrap
but returns default
if o
is None
Option.unwrapOrElse(o, f)
- same as unwrap
but returns the result of the application of f
if o
is None
Option.mapOr(o, default)
- same as map
but returns Some(default)
if o
is None
Option.mapOrElse(o, f)
- same as map
but returns Some(f())
if o
is None
FAQs
Some useful functions for dealing with `Some` and `None`.
The npm package bs-option receives a total of 2 weekly downloads. As such, bs-option popularity was classified as not popular.
We found that bs-option demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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