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svelte-tiny-spa/README.md

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# svelte-tiny-spa
A tiny unframework for making SPAs in Svelte.
## Overview
This library intercepts clicks on internal links and turns them into `history.pushState()` calls. The browser's `location` object is exposed through a Svelte store, which updates upon these intercepted clicks and upon `popstate` events. It also optionally provides a mechanism for hosts which do not support falling back to `index.html` for missing files.
## Setup
If your host supports falling back to `index.html` for requests of all unknown files, you should use that feature. Copy [`location.js`](location.js) into your project, and you're done.
### If your host does not support falling back to `index.html`
You'll use a custom 404 page that redirects to the root and encodes the original URL in a query parameter. The root page then rewrites the URL using `history.replaceState()`.
Add [`404.html`](404.html) to your project at the appropriate path. Uncomment the lines at the top of [`location.js`](location.js) to handle the rewrite after the redirection.
## Usage
```js
import location from '.../location.js';
```
This is a Svelte store containing the `location` object, and updates whenever a link click is intercepted or a `popstate` event occurs.
Interception occurs when all of the following are met:
1. The link is same-origin.
1. The link is not merely a `#hash` change.
1. The link does not have a `target` attribute.
1. The link does not have a `download` attribute.
1. The link was left clicked.
1. The link was not clicked while pressing Alt/Ctrl/Meta/Shift.
1. The link click was not `preventDefault`ed.
The store also contains `goto(url, replace)` and `scroll()` methods.
- `goto(url, replace)` navigates to a URL.
- `url` is resolved according to normal rules.
- `replace` is a boolean indicating whether to use `history.pushState()` or `history.replaceState()`.
- `scroll()` scrolls to either the top of the page or the element indicated by the `#hash` portion of the URL. This should be called after you've finished rendering a page.
## License
[MIT](LICENSE)