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‎.gitignore‎

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/node_modules/
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/public/build/
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.DS_Store

‎.vscode/extensions.json‎

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{
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"recommendations": ["svelte.svelte-vscode"]
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}

‎README.md‎

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*Psst — looking for a more complete solution? Check out [SvelteKit](https://kit.svelte.dev), the official framework for building web applications of all sizes, with a beautiful development experience and flexible filesystem-based routing.*
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*Looking for a shareable component template instead? You can [use SvelteKit for that as well](https://kit.svelte.dev/docs#packaging) or the older [sveltejs/component-template](https://github.com/sveltejs/component-template)*
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---
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# svelte app
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This is a project template for [Svelte](https://svelte.dev) apps. It lives at https://github.com/sveltejs/template.
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To create a new project based on this template using [degit](https://github.com/Rich-Harris/degit):
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```bash
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npx degit sveltejs/template svelte-app
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cd svelte-app
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```
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*Note that you will need to have [Node.js](https://nodejs.org) installed.*
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## Get started
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Install the dependencies...
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```bash
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cd svelte-app
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npm install
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```
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...then start [Rollup](https://rollupjs.org):
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```bash
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npm run dev
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```
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Navigate to [localhost:8080](http://localhost:8080). You should see your app running. Edit a component file in `src`, save it, and reload the page to see your changes.
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By default, the server will only respond to requests from localhost. To allow connections from other computers, edit the `sirv` commands in package.json to include the option `--host 0.0.0.0`.
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If you're using [Visual Studio Code](https://code.visualstudio.com/) we recommend installing the official extension [Svelte for VS Code](https://marketplace.visualstudio.com/items?itemName=svelte.svelte-vscode). If you are using other editors you may need to install a plugin in order to get syntax highlighting and intellisense.
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## Building and running in production mode
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To create an optimised version of the app:
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```bash
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npm run build
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```
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You can run the newly built app with `npm run start`. This uses [sirv](https://github.com/lukeed/sirv), which is included in your package.json's `dependencies` so that the app will work when you deploy to platforms like [Heroku](https://heroku.com).
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## Single-page app mode
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By default, sirv will only respond to requests that match files in `public`. This is to maximise compatibility with static fileservers, allowing you to deploy your app anywhere.
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If you're building a single-page app (SPA) with multiple routes, sirv needs to be able to respond to requests for *any* path. You can make it so by editing the `"start"` command in package.json:
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```js
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"start": "sirv public --single"
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```
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## Using TypeScript
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This template comes with a script to set up a TypeScript development environment, you can run it immediately after cloning the template with:
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```bash
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node scripts/setupTypeScript.js
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```
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Or remove the script via:
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```bash
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rm scripts/setupTypeScript.js
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```
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If you want to use `baseUrl` or `path` aliases within your `tsconfig`, you need to set up `@rollup/plugin-alias` to tell Rollup to resolve the aliases. For more info, see [this StackOverflow question](https://stackoverflow.com/questions/63427935/setup-tsconfig-path-in-svelte).
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## Deploying to the web
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### With [Vercel](https://vercel.com)
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Install `vercel` if you haven't already:
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```bash
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npm install -g vercel
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```
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Then, from within your project folder:
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```bash
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cd public
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vercel deploy --name my-project
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```
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### With [surge](https://surge.sh/)
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Install `surge` if you haven't already:
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```bash
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npm install -g surge
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```
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Then, from within your project folder:
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```bash
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npm run build
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surge public my-project.surge.sh
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```

‎package.json‎

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{
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"name": "svelte-app",
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"version": "1.0.0",
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"private": true,
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"scripts": {
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"build": "rollup -c",
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"dev": "rollup -c -w",
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"start": "sirv public --no-clear",
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"check": "svelte-check --tsconfig ./tsconfig.json"
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},
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"devDependencies": {
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"@duckdb/duckdb-wasm": "^1.13.1-dev166.0",
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"@rollup/plugin-commonjs": "^17.0.0",
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"@rollup/plugin-node-resolve": "^11.0.0",
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"rollup": "^2.3.4",
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"rollup-plugin-css-only": "^3.1.0",
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"rollup-plugin-livereload": "^2.0.0",
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"rollup-plugin-svelte": "^7.0.0",
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"rollup-plugin-terser": "^7.0.0",
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"@rollup/plugin-url": "^6.1.0",
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"svelte": "^3.0.0",
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"svelte-check": "^2.0.0",
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"svelte-preprocess": "^4.0.0",
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"@rollup/plugin-typescript": "^8.0.0",
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"typescript": "^4.0.0",
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"tslib": "^2.0.0",
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"@tsconfig/svelte": "^2.0.0"
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},
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"dependencies": {
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"sirv-cli": "^2.0.0"
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}
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}

‎public/favicon.png‎

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‎public/global.css‎

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html, body {
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position: relative;
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width: 100%;
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height: 100%;
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}
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body {
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color: #333;
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margin: 0;
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padding: 8px;
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box-sizing: border-box;
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font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
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}
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a {
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color: rgb(0,100,200);
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text-decoration: none;
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}
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a:hover {
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text-decoration: underline;
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}
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a:visited {
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color: rgb(0,80,160);
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}
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label {
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display: block;
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}
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input, button, select, textarea {
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font-family: inherit;
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font-size: inherit;
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-webkit-padding: 0.4em 0;
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padding: 0.4em;
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margin: 0 0 0.5em 0;
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box-sizing: border-box;
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border: 1px solid #ccc;
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border-radius: 2px;
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}
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input:disabled {
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color: #ccc;
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}
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button {
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color: #333;
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background-color: #f4f4f4;
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outline: none;
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}
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button:disabled {
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color: #999;
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}
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button:not(:disabled):active {
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background-color: #ddd;
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}
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button:focus {
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border-color: #666;
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}

‎public/index.html‎

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset='utf-8'>
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<meta name='viewport' content='width=device-width,initial-scale=1'>
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<title>Svelte app</title>
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<link rel='icon' type='image/png' href='/favicon.png'>
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<link rel='stylesheet' href='/global.css'>
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<link rel='stylesheet' href='/build/bundle.css'>
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<script defer src='/build/bundle.js'></script>
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</head>
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<body>
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</body>
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</html>

‎rollup.config.js‎

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import svelte from 'rollup-plugin-svelte';
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import commonjs from '@rollup/plugin-commonjs';
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import resolve from '@rollup/plugin-node-resolve';
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import url from '@rollup/plugin-url';
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import livereload from 'rollup-plugin-livereload';
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import { terser } from 'rollup-plugin-terser';
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import sveltePreprocess from 'svelte-preprocess';
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import typescript from '@rollup/plugin-typescript';
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import css from 'rollup-plugin-css-only';
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const production = !process.env.ROLLUP_WATCH;
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function serve() {
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let server;
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function toExit() {
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if (server) server.kill(0);
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}
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return {
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writeBundle() {
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if (server) return;
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server = require('child_process').spawn('npm', ['run', 'start', '--', '--dev'], {
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stdio: ['ignore', 'inherit', 'inherit'],
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shell: true
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});
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process.on('SIGTERM', toExit);
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process.on('exit', toExit);
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}
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};
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}
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export default {
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input: 'src/main.ts',
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output: {
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sourcemap: true,
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format: 'iife',
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name: 'app',
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file: 'public/build/bundle.js'
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},
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plugins: [
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svelte({
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preprocess: sveltePreprocess({ sourceMap: !production }),
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compilerOptions: {
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// enable run-time checks when not in production
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dev: !production
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}
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}),
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url({
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fileName: '[dirname][hash][extname]',
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include: ['**/*.worker.js' ,'**/*.wasm', '**/*.svg', '**/*.png', '**/*.jp(e)?g', '**/*.gif', '**/*.webp'],
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publicPath: '/build/',
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}),
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// we'll extract any component CSS out into
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// a separate file - better for performance
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css({ output: 'bundle.css' }),
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// If you have external dependencies installed from
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// npm, you'll most likely need these plugins. In
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// some cases you'll need additional configuration -
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// consult the documentation for details:
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// https://github.com/rollup/plugins/tree/master/packages/commonjs
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resolve({
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browser: true,
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dedupe: ['svelte']
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}),
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commonjs(),
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typescript({
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sourceMap: !production,
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inlineSources: !production
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}),
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// In dev mode, call `npm run start` once
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// the bundle has been generated
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!production && serve(),
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// Watch the `public` directory and refresh the
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// browser on changes when not in production
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!production && livereload('public'),
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// If we're building for production (npm run build
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// instead of npm run dev), minify
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production && terser()
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],
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watch: {
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clearScreen: false
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}
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};

‎src/App.svelte‎

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<script lang="ts">
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import * as duckdb from '@duckdb/duckdb-wasm';
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export let db: Promise<duckdb.AsyncDuckDB>;
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</script>
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<main>
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{#await db}
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<h1>Instantiating...</h1>
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{:then db}
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<h1>Hello DuckDB-Wasm {duckdb.PACKAGE_VERSION}</h1>
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{:catch error}
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<p style="color: red">{error.message}</p>
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{/await}
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</main>
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<style>
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main {
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text-align: center;
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padding: 1em;
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max-width: 240px;
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margin: 0 auto;
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}
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h1 {
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color: #ff3e00;
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text-transform: uppercase;
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font-size: 4em;
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font-weight: 100;
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}
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@media (min-width: 640px) {
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main {
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max-width: none;
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}
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}
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</style>

‎src/global.d.ts‎

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/// <reference types="svelte" />
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declare module '*.wasm' {
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const value: any;
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export default value;
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}
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declare module '*.worker.js' {
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const value: any;
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export default value;
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}

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