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Rimbu is a TypeScript library focused on immutable, performant, and type-safe collections and other tools.
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@rimbu/ordered

This packages contains an implementation of OrderedMap and OrderedSet, which are wrappers around other RMap and RSet implementations, and that add the capability to remember insertion order. Iterating over the collections will return the values in this insertion order.

This package exports the following types:

Name Description
OrderedMap<K, V> a map with entries of key type K and value type V, where key insertion order is maintained
OrderedSet<T> a set of value type T where insertion order is maintained

For complete documentation please visit the Map or Se page in the Rimbu Docs, or directly see the Rimbu Ordered API Docs.

Or Try Out Rimbu in CodeSandBox.

Installation

For convenience, all main types are also exported through @rimbu/core.

To install separately:

Yarn/NPM

yarn add @rimbu/ordered

or

npm i @rimbu/ordered

Deno

For Deno, the following approach is recommended:

In the root folder of your project, create or edit a file called import_map.json with the following contents (where you should replace x.y.z with the desired version of Rimbu):

{
  "imports": {
    "@rimbu/": "https://deno.land/x/rimbu@x.y.z/"
  }
}

Note: The trailing slashes are important!

In this way you can use relative imports from Rimbu in your code, like so:

import { List } from '@rimbu/core/mod.ts';
import { HashMap } from '@rimbu/hashed/mod.ts';

Note that for sub-packages, due to conversion limitations it is needed to import the index.ts instead of mod.ts, like so:

import { HashMap } from '@rimbu/hashed/map/index.ts';

To run your script (let’s assume the entry point is in src/main.ts):

deno run --import-map import_map.json src/main.ts

Because Rimbu uses advanced types, this may slow down the type checking part when running your code. If you’re able to rely on your code editor to provide type errors, you can skip the Deno type check using the --no-check flag:

deno run --import-map import_map.json --no-check src/main.ts

Usage

import { OrderedSet } from '@rimbu/ordered';

console.log(OrderedSet.of(1, 3, 2, 3, 1).toString());

Author

Arvid Nicolaas

Contributing

Feel very welcome to contribute to further improve Rimbu. Please read our Contributing guide.

Contributors

Made with contributors-img.

License

Licensed under the MIT License, Copyright © 2020-present Arvid Nicolaas.

See LICENSE for more information.