# Modules

## Calculator

Calculator contains tools to parse formula strings and evaluate them. We use a custom version of [fast-formula-parser](https://github.com/LesterLyu/fast-formula-parser).

```
yarn add @rowsncolumns/calculator
```

## Calculator Web worker

You can also run calculations in a web worker. Only the evaluation is done in a worker thread, while the dependency graph and dependency parser remains in the main UI thread

```
yarn add @rowsncolumns/calculator-webworker
```

## DAG - Directed acyclic graph

The dag package is used to store cell dependencies. You can use it to get dependents and precedents of a cell

```
yarn add @rowsncolumns/dag
```

## Functions

The functions package contains built-in functions supported by Spreadsheet. It also contains function descriptions, parameters etc.

```
yarn add @rowsncolumns/functions
```

## Grid

This is the main canvas grid that powers the spreadsheet

```
yarn add @rowsncolumns/grid
```

## Icons

Contains all icons used by Spreadsheet

```
yarn add @rowsncolumns/icons
```

## Toolkit

All export/import functions are available in the toolkit

```
yarn add @rowsncolumns/toolkit
```

## Spreadsheet State

Exposes hooks to manage spreadsheet state. Only required if you are not using a custom state management solution

```
yarn add @rowsncolumns/spreadsheet-state
```

## UI Components

The UI package contains all shared components used by Spreadsheet. CSS is powered by [Stitches](https://stitches.dev/). We do have plans to migrate to tailwind

```
yarn add @rowsncolumns/ui
```

## Utilities

Shared sheet utility functions

```
yarn add @rowsncolumns/utils
```

## Y Spreadsheet

```json
yarn add @rowsncolumns/y-spreadsheet
```

## Pivot

The pivot package provides advanced pivot table functionality powered by DuckDB for row/column grouping and aggregations.

```
yarn add @rowsncolumns/pivot
```