index.qmd

---
pagetitle: "Viash"
page-layout: custom
section-divs: false
toc: false
css: index.css
editor: source
---

```{r include=FALSE, echo=FALSE}
library(rmarkdown)
library(languageserver)
library(reticulate)
```

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# Viash

### From scripts and metadata to a modular data pipeline.

- Viash uses code generation to create a module from your script that can be used seamlessly in a data pipeline
- Built-in interfaces for inputs and outputs makes linking modules in a pipeline trivial.
- Focus on the functionality of your script, Viash will take care of the data workflow framework.
- No expert knowledge needed -- our automatic wrapping makes for high quality code.

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[Installation](installation/){.btn-action .btn .btn-info .btn-lg role="button"}
[Guide](guide/){.btn-action .btn .btn-info .btn-lg role="button"}
[Reference](reference/){.btn-action .btn .btn-info .btn-lg role="button"}
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![](images/ViashIllustration.svg){.center-image}
 
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### Polyglot
With Viash, you can use your preferred scripting language, or even mix and match as you please. Supported languages include: Bash, Python, R, Scala, JS and C#.

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[Learn more »](guide/component/create-component.qmd)
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### Flexible & Modular
A Viash component can be exported as a standalone or Docker executable or as a modular Nextflow module.

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[Learn more »](guide)
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### Unit Testing
Viash components come with unit testing built in, making debugging easier. Test all components, even while using them in a data pipeline.

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[Learn more »](guide/component/unit-testing.qmd)
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### All-Inclusive Executable
Every executable built by Viash comes with an intuitive CLI automatically. This includes command-line arguments, type-checking, checking of required parameters and ensuring the existence of required input files.

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[Learn more »](/reference/config/#arguments)
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### Nextflow Integration
Viash generates Nextflow modules from your component to create portable and scalable data pipelines that run platform-independent.

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[Learn more »](guide/nextflow_vdsl3/index.qmd)
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### Containerization
Reproducibility by design. A custom Docker container is automatically generated based on your dependencies described in your metadata.

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[Learn more »](guide/component/add-dependencies.qmd)
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### Create your first pipeline with the help of Viash

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[Quickstart](/quickstart/){.btn-action .btn .btn-info .btn-lg role="button"}
[Cheat sheet](cheatsheet/viash_cheatsheet_v1_2.pdf){.btn-action .btn .btn-info .btn-lg role="button"}
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