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# Studio Hyperdrive HAL Toolset | ||
# Javascript Tools: Pagination (`@studiohyperdrive/nodejs-hal-tools`) | ||
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## General | ||
`@studiohyperdrive/nodejs-hal-tools` is light-weight package that contains a set of tools for working with HAL standards. | ||
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WARNING: This package has been renamed to [@studiohyperdrive/nodejs-hal-tools](https://www.npmjs.com/package/@studiohyperdrive/nodejs-hal-tools). | ||
## Installation | ||
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This repo contains a set of tools for working with HAL standards. | ||
Install the package first: | ||
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It is build with: | ||
- node: `v18.x.x` ( ~ `lts/hydrogen`) | ||
- npm: `10.x.x` | ||
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For a complete list of packages and version check out the `package.json` file. | ||
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## Use | ||
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### Install | ||
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You can install this package by doing: | ||
``` bash | ||
$ npm install @studiohyperdrive/nodejs-hal-tools | ||
``` | ||
or if you use Yarn: | ||
``` bash | ||
$ yarn add @studiohyperdrive/nodejs-hal-tools | ||
``` | ||
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### In your code | ||
In your code, you can use this package and it's interfaces like this: | ||
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```typescript | ||
import { HALFormat } from '@studiohyperdrive/nodejs-hal-tools'; | ||
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class DoSomething { | ||
public async findAll(page: number, size: number): Promise<IHALFormat<MyEntity>> { | ||
const [entities, totalElements] = await this.MyEntitiyRepository.findAndCount( | ||
calculateTakeSkip(page, size), | ||
); | ||
const key = 'my-entities'; | ||
const path = `https://my-api.com/v1/api/${key}`; | ||
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return HALFormat<MyEntity>({ | ||
path, | ||
key, | ||
entities, | ||
page, | ||
size, | ||
totalElements, | ||
}); | ||
} | ||
} | ||
```shell | ||
npm install @studiohyperdrive/nodejs-hal-tools | ||
``` | ||
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This will transform your entities and count to a HAL formatted response which you can return to the client. | ||
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#### Parameters | ||
- `path`: The path parameter is optional, if omitted, the _links section is not added | ||
- `maxPages`: An optional parameter that limits the maximum number of pages returned. This can be useful in scenario's with lots of items, where querying with limit/offset can be time consuming. To prevent the user from navigating to e.g. page 599, you can limit that number using the `maxPages` parameter. | ||
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### What's in the package? | ||
This package exposes the following functions: | ||
- `calculateTotalPages`: This function will calculate the total amount of pages based on the pagesize & total amount of items. | ||
- `calculatePagination`: This function will calculate and return all pagination properties. | ||
- `calculateNextPage`: This function will calculate your next page or, when there is none, return your current page. | ||
- `createHalLinks`: This function will create a set of links required by the HAL Format. | ||
- `HALFormat`: This function is the main one which will use the above and your input to transform your input to a HAL-formatted object. | ||
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And the following interfaces: | ||
- `IHALLink`: An interface for a single HAL link. | ||
- `IHALLinks`: An interface for the `_links` property. | ||
- `IHALEntities`: An interface for the `_embedded` property, takes in an optional `T`. | ||
- `IHALPagination`: An interface for the `_page` property. | ||
- `IHALFormat`: An interface for the HAL formatted object containing the above properties. | ||
- `IHALFormatParams`: An interface for the arguments of the `HALFormat` function. | ||
## Setup for contribution | ||
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### Clone and install dependencies | ||
To setup this project, clone the repo and run `npm i` to install the dependencies. | ||
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### NPM | ||
The available commands for building the project are: | ||
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| command | runs | | ||
|--------------|-----------------------------------------------------------------------------------------------------------| | ||
| build | This script runs tsc to compile and your code (target to the `dist` folder). | | ||
| prepare | This script runs the `npm run build` command, it is a hook on the npm publish. | | ||
<br> | ||
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The available commands for testing the project are: | ||
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| command | runs | | ||
|--------------|-----------------------------------------------------------------------------------------------------------| | ||
| lint | This script will run linting and fix what it can. | | ||
| test | This script will run your Jest tests for the library and create a coverage report. | | ||
| test | This script will run your Jest tests but with the `--watchAll` flag. It does not create a coverage report.| | ||
<br> | ||
## Versioning and build information | ||
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## Publish | ||
This package will follow a semver-like format, `major.minor.patch`, in which: | ||
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This project can be published to the npm registry. To do so follow these steps: | ||
1. Run `npm version <major | minor | patch>` to create a new version and commit + tag it. | ||
2. Open a Merge Request on Github. | ||
3. Once your changes have been commited to the main-branch, you can publish to the repo. | ||
4. Run `npm publish`. | ||
- `major`: Introduces new features or breaking changes | ||
- `minor`: Introduces minor non-breaking changes | ||
- `patch`: Introduces bugfixes | ||
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## Team | ||
For more information about the build process, authors, contributions and issues, we refer to the [hyperdrive-opensource](https://github.com/studiohyperdrive/hyperdrive-opensource) repository. | ||
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This project has been created by: | ||
- Denis Valcke: denis.valcke@studiohyperdrive.be | ||
## Documentation | ||
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It is currently maintained by: | ||
- Denis Valcke: denis.valcke@studiohyperdrive.be | ||
To find more information regarding this package, we refer to [our documentation platform](https://open-source.studiohyperdrive.be/docs/angular/page/introduction). |
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