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https://github.com/marvinhagemeister/preact-server-renderer
Server side rendering of preact components
https://github.com/marvinhagemeister/preact-server-renderer
nodejs preact ssr
Last synced: 26 days ago
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Server side rendering of preact components
- Host: GitHub
- URL: https://github.com/marvinhagemeister/preact-server-renderer
- Owner: marvinhagemeister
- License: mit
- Created: 2017-06-08T20:28:09.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2018-08-01T20:16:42.000Z (over 6 years ago)
- Last Synced: 2024-10-05T08:47:21.495Z (about 1 month ago)
- Topics: nodejs, preact, ssr
- Language: TypeScript
- Homepage:
- Size: 117 KB
- Stars: 63
- Watchers: 4
- Forks: 2
- Open Issues: 3
-
Metadata Files:
- Readme: README.md
- Changelog: CHANGELOG.md
- License: LICENSE.md
Awesome Lists containing this project
README
# Preact Server Renderer
`preact-server-render` is similar to [preact-render-to-string](https://github.com/developit/preact-render-to-string)
by [@developit](https://github.com/developit/) (author of preact),
but with pluggable formatters. This means you can easily tailer the
output to your needs, without any overhead. Wether you have a
snapshot renderer, or a custom format in mind. Performance wise,
both libraries are equal, only the jsx renderer is a tiny bit faster
here.
## Installation
```bash
# npm
npm install preact-server-renderer
# yarn
yarn add preact-server-renderer
```
## Usage
```jsx
const {
createRenderer,
CompactRenderer,
JsxRenderer,
} = require("preact-server-renderer");
// Default rendering
const render = createRenderer(new CompactRenderer());
const html = render(
);
// JSX rendering
const renderJsx = createRenderer(new JsxRenderer());
const html2 = renderJsx(
);
// shallow rendering
const shallow = createRenderer(new CompactRenderer(), { shallow: true });
const html3 = shallow(
);
```
### CompactRenderer
The `CompactRenderer` is the standard html renderer. It doesn't add any
whitespace and simply renders the components to a string.
Example:
```jsx
const { createRenderer, CompactRenderer } = require("preact-server-renderer");
const render = createRenderer(new CompactRenderer());
console.log(
render(
Hello
,
),
);
```
Output:
```txt
Hello
```
### JsxRenderer
This one is meant for snapshot tests, like they are found in [jest]().
Example:
```jsx
const { createRenderer, JsxRenderer } = require("preact-server-renderer");
const render = createRenderer(new JsxRenderer());
console.log(
render(
Hello
,
),
);
```
Output:
```txt
Hello
```
## Writing A Custom Renderer
This is where this library really shines. Custom renderers can be easily
plugged into the `createRenderer` function. They basically have a few callbacks
for the specific parsing steps. They simply need to adhere to the following
interface and that's it!
```ts
interface Renderer {
output: T; // Can be anything you want
/** Reset the current instance */
reset(): void;
/** Called when an attribute is parsed */
onProp(
name: string,
value: string | boolean | undefined | null,
depth: number,
): void;
/** Called at the start of each new vnode object */
onOpenTag(
name: string,
hasChildren: boolean,
isVoid: boolean,
depth: number,
): void;
/** Called when attribute parsing is done for the current vnode */
onOpenTagClose(
name: string,
hasAttributes: boolean,
isVoid: boolean,
hasChildren: boolean,
depth: number,
): void;
/** Called when the node is a simple string */
onTextNode(text: string, depth: number): void;
/** Called when all children of the current vnode are parsed */
onCloseTag(name: string, isVoid: boolean, depth: number): void;
/** Called when vnode has it's own html (f.ex. jQuery plugins) */
onDangerousInnerHTML(html: string): void;
}
```
## License
MIT, see [LICENSE.md](LICENSE.md).