docs(primitives): add docs

Author: diegomura

packages/primitives/README.md

@@ -3,3 +3,79 @@
 </p>
 
 # @react-pdf/primitives
+
+Internal element type constants for react-pdf. This package defines the primitive node types used throughout the react-pdf rendering pipeline.
+
+## Installation
+
+```bash
+yarn add @react-pdf/primitives
+```
+
+## Usage
+
+```js
+import { View, Text, Page, Document } from '@react-pdf/primitives';
+
+console.log(View); // 'VIEW'
+console.log(Text); // 'TEXT'
+console.log(Page); // 'PAGE'
+console.log(Document); // 'DOCUMENT'
+```
+
+These constants are primarily used internally by react-pdf packages to identify element types during the rendering process.
+
+## Available Primitives
+
+### Document Structure
+
+| Export     | Value        | Description                       |
+| ---------- | ------------ | --------------------------------- |
+| `Document` | `'DOCUMENT'` | Root document container           |
+| `Page`     | `'PAGE'`     | Individual page within a document |
+| `View`     | `'VIEW'`     | Generic container element         |
+| `Text`     | `'TEXT'`     | Text content container            |
+| `Link`     | `'LINK'`     | Hyperlink element                 |
+| `Note`     | `'NOTE'`     | Annotation/note element           |
+| `Image`    | `'IMAGE'`    | Image element                     |
+| `Canvas`   | `'CANVAS'`   | Custom drawing canvas             |
+
+### Form Elements
+
+| Export      | Value          | Description                   |
+| ----------- | -------------- | ----------------------------- |
+| `FieldSet`  | `'FIELD_SET'`  | Form field grouping container |
+| `TextInput` | `'TEXT_INPUT'` | Text input field              |
+| `Select`    | `'SELECT'`     | Dropdown select field         |
+| `Checkbox`  | `'CHECKBOX'`   | Checkbox input field          |
+| `List`      | `'LIST'`       | List element for forms        |
+
+### SVG Elements
+
+| Export           | Value               | Description                |
+| ---------------- | ------------------- | -------------------------- |
+| `Svg`            | `'SVG'`             | SVG root container         |
+| `G`              | `'G'`               | SVG group element          |
+| `Path`           | `'PATH'`            | SVG path element           |
+| `Rect`           | `'RECT'`            | SVG rectangle element      |
+| `Line`           | `'LINE'`            | SVG line element           |
+| `Circle`         | `'CIRCLE'`          | SVG circle element         |
+| `Ellipse`        | `'ELLIPSE'`         | SVG ellipse element        |
+| `Polygon`        | `'POLYGON'`         | SVG polygon element        |
+| `Polyline`       | `'POLYLINE'`        | SVG polyline element       |
+| `Tspan`          | `'TSPAN'`           | SVG text span element      |
+| `ClipPath`       | `'CLIP_PATH'`       | SVG clipping path          |
+| `Defs`           | `'DEFS'`            | SVG definitions container  |
+| `Stop`           | `'STOP'`            | Gradient stop element      |
+| `LinearGradient` | `'LINEAR_GRADIENT'` | Linear gradient definition |
+| `RadialGradient` | `'RADIAL_GRADIENT'` | Radial gradient definition |
+
+### Internal Types
+
+| Export         | Value             | Description                             |
+| -------------- | ----------------- | --------------------------------------- |
+| `TextInstance` | `'TEXT_INSTANCE'` | Internal representation of text content |
+
+## License
+
+MIT