npmpackage.info

option-monad-ts

Option Monad for TypeScript

0.1.4

MIT

TypeScript

400.00 B

3,733 2.6

Installations

npm install option-monad-ts

Developer Guide

BETA

Typescript

Yes

Module System

CommonJS

Node Version

12.18.3

NPM Version

6.14.6 Score

70.3

Supply Chain

85.1

Quality

75.6

Maintenance

100

Vulnerability

100

License

Pull Requests

Open

0

Total

1

Closed

1

Issues

Open

0

Total

0

Closed

0

Releases

Unable to fetch releases

Contributors

Unable to fetch Contributors

View all 2 contributors

Languages

TypeScript

TypeScript (100%)

Developer

sdedovic

Download Statistics

Total Downloads

3,733

Last Day

Last Week

Last Month

Last Year

508

GitHub Statistics

1 Stars

14 Commits

3 Watching

2 Branches

2 Contributors

Bundle Size

782.00 B

Minified

400.00 B

Minified + Gzipped

Bundlephobia

Maintainers

Package Meta Information

Latest Version

0.1.4

Package Id

option-monad-ts@0.1.4

Unpacked Size

12.02 kB

Size

3.82 kB

File Count

NPM Version

6.14.6

Node Version

12.18.3

Total Downloads

Cumulative downloads

Total Downloads

3,733

Last day

Compared to previous day

Last week

133.3%

Compared to previous week

Last month

206.7%

Compared to previous month

Last year

-29.1%

508

Compared to previous year

Daily Downloads

Weekly Downloads

Monthly Downloads

Yearly Downloads

Dev Dependencies

@types/jest @types/node jest ts-jest ts-loader ts-node typescript

Versions

Option monad for Typescript

Yet another port of the Scala Option type to TypeScript.

npm (tag)

1npm i --save option-monad-ts

Usage

Basic Example

1import { Option, Some, None } from 'option-monad-ts';
2
3// Create Some 
4let n = new Some(3);
5let m = Some.of('four');
6
7// Create Option
8let c = Option.of(3);
9let d = Option.of(null);
10
11// Validate and use
12n.get();                    // 3
13m.get();                    // 'four'
14
15c.isDefined();              // true
16d.isDefined();              // false
17
18Some.of(4)
19    .map(_ => _.toString())
20    .forEach(_ => console.log(_))

Documentation

`Option<T>`

static `of<T>(x: T): Option<T>`

An Option factory which creates Some.of(x) if the argument is not null, and None if it is null.

`filter(p: (i: T) => boolean): Option<T>`

Returns this Option if it is nonempty and applying the predicate p to this Option's value returns true. Otherwise, return None.

`flatMap<R>(f: (i: T) => Option<R>): Option<R>`

Returns the result of applying f to this Option's value if this Option is nonempty. Returns None if this Option is empty. Slightly different from map in that f is expected to return an Option (which could be None).

`forEach<U>(f: (i: T) => U): void`

Apply the given procedure f to the option's value, if it is nonempty. Otherwise, do nothing.

`get(): T`

Returns the option's value. The option must be nonEmpty.

`getOrElse(defaultValue: T): T`

Returns the option's value if the option is nonempty, otherwise return defaultValue.

`isDefined(): boolean`

Returns true if the option is an instance of Some, false otherwise.

`isEmpty(): boolean`

Returns true if the option is None, false otherwise.

`map<R>(f: (i: T) => R): Option<R>`

Returns a Some containing the result of applying f to this Option's value if this Option is nonempty. Otherwise, return None.

Why another library?

I thought it would be a good exercise
I didn't like the API/usage patterns of some existing libraries
I wanted something as close to the Scala lib as possible, so I ported it trying to keep to its spirit

No vulnerabilities found.

10

Dangerous-Workflow

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10

Binary-Artifacts

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10

License

Determines if the project has defined a license.

2

Pinned-Dependencies

Determines if the project has declared and pinned the dependencies of its build process.

0

Code-Review

Determines if the project requires human code review before pull requests (aka merge requests) are merged.

0

Maintained

Determines if the project is "actively maintained".

0

SAST

Determines if the project uses static code analysis.

0

Token-Permissions

Determines if the project's workflows follow the principle of least privilege.

0

CII-Best-Practices

Determines if the project has an OpenSSF (formerly CII) Best Practices Badge.

0

Security-Policy

Determines if the project has published a security policy.

0

Fuzzing

Determines if the project uses fuzzing.

0

Branch-Protection

Determines if the default and release branches are protected with GitHub's branch protection settings.

0

Vulnerabilities

Determines if the project has open, known unfixed vulnerabilities.

Score

2.6

/10

Last Scanned on 2025-01-13

The Open Source Security Foundation is a cross-industry collaboration to improve the security of open source software (OSS). The Scorecard provides security health metrics for open source projects.

Learn More

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``` npm install ts-option-monad ```

option-monad-ts

Installations

Developer Guide

Yes

CommonJS

12.18.3

6.14.6

Score

Pull Requests

0

1

1

Issues

0

0

0

Releases

Unable to fetch releases

Contributors

Unable to fetch Contributors

Languages

Developer

sdedovic

Download Statistics

GitHub Statistics

Bundle Size

782.00 B

400.00 B

Maintainers

Package Meta Information

Total Downloads

3,733

Daily Downloads

Weekly Downloads

Monthly Downloads

Yearly Downloads

Dev Dependencies

Option monad for Typescript

Usage

Basic Example

Documentation

Option<T>

static of<T>(x: T): Option<T>

filter(p: (i: T) => boolean): Option<T>

flatMap<R>(f: (i: T) => Option<R>): Option<R>

forEach<U>(f: (i: T) => U): void

get(): T

getOrElse(defaultValue: T): T

isDefined(): boolean

isEmpty(): boolean

map<R>(f: (i: T) => R): Option<R>

Why another library?

10

10

10

2

0

0

0

0

0

0

0

0

0

2.6

/10

Other packages similar to option-monad-ts

`Option<T>`

static `of<T>(x: T): Option<T>`

`filter(p: (i: T) => boolean): Option<T>`

`flatMap<R>(f: (i: T) => Option<R>): Option<R>`

`forEach<U>(f: (i: T) => U): void`

`get(): T`

`getOrElse(defaultValue: T): T`

`isDefined(): boolean`

`isEmpty(): boolean`

`map<R>(f: (i: T) => R): Option<R>`