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README.md

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# Svelte + TS + Vite
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# london-classical
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This template should help get you started developing with Svelte and TypeScript in Vite.
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Website which aggregates (some) classical music concerts in London.
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## Recommended IDE Setup
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This is done by scraping the websites of various venues and aggregating the data into a single page.
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The scraping is done with a small Rust application, located in the `rust` subdirectory.
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[VS Code](https://code.visualstudio.com/) + [Svelte](https://marketplace.visualstudio.com/items?itemName=svelte.svelte-vscode).
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The frontend is built with Svelte / TypeScript, and is in the `src` subdirectory.
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## Need an official Svelte framework?
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Check out [SvelteKit](https://github.com/sveltejs/kit#readme), which is also powered by Vite. Deploy anywhere with its serverless-first approach and adapt to various platforms, with out of the box support for TypeScript, SCSS, and Less, and easily-added support for mdsvex, GraphQL, PostCSS, Tailwind CSS, and more.
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## Run locally
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## Technical considerations
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1. Clone the repository.
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**Why use this over SvelteKit?**
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```
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git clone git@github.com:penelopeysm/london-classical.git
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cd london-classical
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```
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- It brings its own routing solution which might not be preferable for some users.
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- It is first and foremost a framework that just happens to use Vite under the hood, not a Vite app.
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2. Run the Rust application to generate the list of concerts.
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This template contains as little as possible to get started with Vite + TypeScript + Svelte, while taking into account the developer experience with regards to HMR and intellisense. It demonstrates capabilities on par with the other `create-vite` templates and is a good starting point for beginners dipping their toes into a Vite + Svelte project.
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```
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cd rust
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cargo run
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```
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Should you later need the extended capabilities and extensibility provided by SvelteKit, the template has been structured similarly to SvelteKit so that it is easy to migrate.
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3. Run the website.
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**Why `global.d.ts` instead of `compilerOptions.types` inside `jsconfig.json` or `tsconfig.json`?**
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```
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# cd back to top level
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npm install
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npm run dev
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```
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Setting `compilerOptions.types` shuts out all other types not explicitly listed in the configuration. Using triple-slash references keeps the default TypeScript setting of accepting type information from the entire workspace, while also adding `svelte` and `vite/client` type information.
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## Generating types
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**Why include `.vscode/extensions.json`?**
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Other templates indirectly recommend extensions via the README, but this file allows VS Code to prompt the user to install the recommended extension upon opening the project.
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**Why enable `allowJs` in the TS template?**
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While `allowJs: false` would indeed prevent the use of `.js` files in the project, it does not prevent the use of JavaScript syntax in `.svelte` files. In addition, it would force `checkJs: false`, bringing the worst of both worlds: not being able to guarantee the entire codebase is TypeScript, and also having worse typechecking for the existing JavaScript. In addition, there are valid use cases in which a mixed codebase may be relevant.
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**Why is HMR not preserving my local component state?**
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HMR state preservation comes with a number of gotchas! It has been disabled by default in both `svelte-hmr` and `@sveltejs/vite-plugin-svelte` due to its often surprising behavior. You can read the details [here](https://github.com/rixo/svelte-hmr#svelte-hmr).
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If you have state that's important to retain within a component, consider creating an external store which would not be replaced by HMR.
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```ts
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// store.ts
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// An extremely simple external store
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import { writable } from 'svelte/store'
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export default writable(0)
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```
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The types associated with concerts are defined in `rust/src/core.rs`.
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These types are exported to TypeScript using `ts-rs`, and live inside `src/`
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To update the TypeScript bindings: run `make types` from the `rust` subdirectory.

rust/Makefile

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types:
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cargo test && rm -r ../src/lib/bindings && mv bindings ../src/lib

rust/README.md

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Learning Rust, because why not.
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This is a Rust application which fetches details about classical concerts in London from the Internet for the frontend to display.
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See `README.md` in the main repo for more information.

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