The Best Simplest Opinionated Whiteboard

.eslintignore

@@ -0,0 +1,13 @@
+.DS_Store
+node_modules
+/build
+/.svelte-kit
+/package
+.env
+.env.*
+!.env.example
+
+# Ignore files for PNPM, NPM and YARN
+pnpm-lock.yaml
+package-lock.json
+yarn.lock

.eslintrc.cjs

@@ -0,0 +1,30 @@
+module.exports = {
+	root: true,
+	extends: [
+		'eslint:recommended',
+		'plugin:@typescript-eslint/recommended',
+		'plugin:svelte/recommended',
+		'prettier'
+	],
+	parser: '@typescript-eslint/parser',
+	plugins: ['@typescript-eslint'],
+	parserOptions: {
+		sourceType: 'module',
+		ecmaVersion: 2020,
+		extraFileExtensions: ['.svelte']
+	},
+	env: {
+		browser: true,
+		es2017: true,
+		node: true
+	},
+	overrides: [
+		{
+			files: ['*.svelte'],
+			parser: 'svelte-eslint-parser',
+			parserOptions: {
+				parser: '@typescript-eslint/parser'
+			}
+		}
+	]
+};

.gitignore

@@ -0,0 +1,10 @@
+.DS_Store
+node_modules
+/build
+/.svelte-kit
+/package
+.env
+.env.*
+!.env.example
+vite.config.js.timestamp-*
+vite.config.ts.timestamp-*

.npmrc

@@ -0,0 +1,2 @@
+engine-strict=true
+resolution-mode=highest

.prettierignore

@@ -0,0 +1,13 @@
+.DS_Store
+node_modules
+/build
+/.svelte-kit
+/package
+.env
+.env.*
+!.env.example
+
+# Ignore files for PNPM, NPM and YARN
+pnpm-lock.yaml
+package-lock.json
+yarn.lock

.prettierrc

@@ -0,0 +1,9 @@
+{
+	"useTabs": true,
+	"singleQuote": true,
+	"trailingComma": "none",
+	"printWidth": 100,
+	"plugins": ["prettier-plugin-svelte"],
+	"pluginSearchDirs": ["."],
+	"overrides": [{ "files": "*.svelte", "options": { "parser": "svelte" } }]
+}

README.md

@@ -0,0 +1,38 @@
+# create-svelte
+
+Everything you need to build a Svelte project, powered by [`create-svelte`](https://github.com/sveltejs/kit/tree/master/packages/create-svelte).
+
+## Creating a project
+
+If you're seeing this, you've probably already done this step. Congrats!
+
+```bash
+# create a new project in the current directory
+npm create svelte@latest
+
+# create a new project in my-app
+npm create svelte@latest my-app
+```
+
+## Developing
+
+Once you've created a project and installed dependencies with `npm install` (or `pnpm install` or `yarn`), start a development server:
+
+```bash
+npm run dev
+
+# or start the server and open the app in a new browser tab
+npm run dev -- --open
+```
+
+## Building
+
+To create a production version of your app:
+
+```bash
+npm run build
+```
+
+You can preview the production build with `npm run preview`.
+
+> To deploy your app, you may need to install an [adapter](https://kit.svelte.dev/docs/adapters) for your target environment.

RunOnLinuxMac.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+cd "$(dirname "$0")"
+npm install
+vite build && vite preview

package.json

@@ -0,0 +1,36 @@
+{
+	"name": "simplewhiteboard",
+	"version": "0.0.1",
+	"private": true,
+	"scripts": {
+		"dev": "vite dev",
+		"build": "vite build",
+		"preview": "vite preview",
+		"start": "npm install && vite build && vite preview",
+		"check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",
+		"check:watch": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json --watch",
+		"test:unit": "vitest",
+		"lint": "prettier --plugin-search-dir . --check . && eslint .",
+		"format": "prettier --plugin-search-dir . --write ."
+	},
+	"devDependencies": {
+		"@sveltejs/adapter-auto": "^2.0.0",
+		"@sveltejs/kit": "^1.5.0",
+		"@typescript-eslint/eslint-plugin": "^5.45.0",
+		"@typescript-eslint/parser": "^5.45.0",
+		"eslint": "^8.28.0",
+		"eslint-config-prettier": "^8.5.0",
+		"eslint-plugin-svelte": "^2.26.0",
+		"postcss": "^8.4.24",
+		"prettier": "^2.8.0",
+		"prettier-plugin-svelte": "^2.8.1",
+		"svelte": "^3.54.0",
+		"svelte-check": "^3.0.1",
+		"tailwindcss": "^3.3.2",
+		"tslib": "^2.4.1",
+		"typescript": "^5.0.0",
+		"vite": "^4.3.0",
+		"vitest": "^0.25.3"
+	},
+	"type": "module"
+}

postcss.config.js

@@ -0,0 +1,6 @@
+export default {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+  },
+}

run.bat

@@ -0,0 +1,3 @@
+@echo off
+cd /d %~dp0
+npm run start

src/app.css

@@ -0,0 +1,3 @@
+@tailwind base;
+@tailwind components;
+@tailwind utilities;

src/app.d.ts

@@ -0,0 +1,12 @@
+// See https://kit.svelte.dev/docs/types#app
+// for information about these interfaces
+declare global {
+	namespace App {
+		// interface Error {}
+		// interface Locals {}
+		// interface PageData {}
+		// interface Platform {}
+	}
+}
+
+export {};

src/app.html

@@ -0,0 +1,15 @@
+<!DOCTYPE html>
+<html lang="en">
+	<head>
+		<meta charset="utf-8" />
+		<link rel="icon" href="%sveltekit.assets%/favicon64.png" />
+		<meta name="viewport" content="width=device-width" />
+		%sveltekit.head%
+	</head>
+	<body data-sveltekit-preload-data="hover">
+		<div style="display: contents" class="flex justify-center w-[100vw] h-[100vh]">
+			%sveltekit.body%
+		</div>
+	</body>
+</html>
+

src/index.test.ts

@@ -0,0 +1,7 @@
+import { describe, it, expect } from 'vitest';
+
+describe('sum test', () => {
+	it('adds 1 + 2 to equal 3', () => {
+		expect(1 + 2).toBe(3);
+	});
+});

src/routes/+layout.svelte

@@ -0,0 +1,9 @@
+<script lang="ts">
+
+    import '../app.css';
+
+</script>
+
+<slot>
+
+</slot>

src/routes/+page.svelte

@@ -0,0 +1,108 @@
+<script lang="ts">
+    import { onMount, onDestroy } from 'svelte';
+    import type { SvelteComponent } from 'svelte';
+    import { browser } from '$app/environment';
+    
+    let canvas: HTMLCanvasElement;
+    let context: CanvasRenderingContext2D;
+    let isDrawing = false;
+    let brushSize = 10;
+    let eraserMode = false;
+    let canvasWidth = 800;  // fallback value
+    let canvasHeight = 600; // fallback value
+
+    let drawColor = "black";
+  
+    onMount(() => {
+      if (browser) {
+        const ctx = canvas.getContext('2d');
+        if (!ctx) {
+          throw new Error('Failed to get 2D context');
+        }
+        context = ctx;
+        window.addEventListener("resize", resizeCanvas);
+        resizeCanvas();
+    
+        canvas.addEventListener("mousedown", startDrawing);
+        canvas.addEventListener("mouseup", stopDrawing);
+        canvas.addEventListener("mousemove", draw);
+      }
+    });
+  
+    onDestroy(() => {
+      if (browser) {
+        window.removeEventListener("resize", resizeCanvas);
+        canvas.removeEventListener("mousedown", startDrawing);
+        canvas.removeEventListener("mouseup", stopDrawing);
+        canvas.removeEventListener("mousemove", draw);
+      }
+    });
+  
+    function startDrawing(e: MouseEvent) {
+      isDrawing = true;
+      draw(e);
+    }
+  
+    function stopDrawing() {
+      isDrawing = false;
+      context.beginPath();
+    }
+  
+    function draw(e: MouseEvent) {
+      if (!isDrawing) return;
+      context.lineWidth = brushSize;
+      context.lineCap = "round";
+      context.strokeStyle = drawColor;
+      
+      context.lineTo(e.clientX - canvas.offsetLeft, e.clientY - canvas.offsetTop);
+      context.stroke();
+      context.beginPath();
+      context.moveTo(e.clientX - canvas.offsetLeft, e.clientY - canvas.offsetTop);
+    }
+  
+    function saveDrawingToFile() {
+      const dataUrl = canvas.toDataURL('image/png');
+      const a = document.createElement('a');
+      a.href = dataUrl;
+      a.download = 'drawing.png';
+      a.click();
+    }
+  
+    function resizeCanvas() {
+      if (browser) {
+        canvasWidth = window.innerWidth;
+        canvasHeight = window.innerHeight;
+      }
+    }
+
+    function clearCanvas() {
+      context.clearRect(0, 0, canvas.width, canvas.height);
+    }
+  
+    function setEraser() {
+      eraserMode = !eraserMode;
+      drawColor = eraserMode ? 'white' : 'black';
+    }
+  </script>
+  
+  <div class="absolute top-0 left-0 p-4 space-y-2 bg-off-white shadow-lg">
+    <button class="px-4 py-2 text-sm font-semibold text-blue-dark bg-green-500 rounded hover:bg-green-600" on:click={saveDrawingToFile}>
+      Save to File
+    </button>
+    <button class="px-4 py-2 text-sm font-semibold text-blue-dark bg-red-500 rounded hover:bg-red-600" on:click={clearCanvas}>
+      Clear Canvas
+    </button>
+    <div class="space-y-1">
+      <p class="text-sm font-semibold">Brush Size</p>
+      <input type="range" min="1" max="100" bind:value={brushSize} class="w-full cursor-pointer" />
+    </div>
+    <div class="space-y-1">
+      <p class="text-sm font-semibold">Brush Color</p>
+      <input type="color" bind:value={drawColor} class="w-full cursor-pointer" />
+    </div>
+    <button class={`px-4 py-2 text-sm font-semibold rounded ${eraserMode ? 'bg-gray-500 hover:bg-gray-600' : 'bg-blue-500 hover:bg-blue-600'} text-blue-dark`} on:click={setEraser}>
+      {eraserMode ? 'Drawing Mode' : 'Eraser Mode'}
+    </button>
+  </div>
+  <canvas bind:this={canvas} width={canvasWidth} height={canvasHeight}></canvas>
+  

static/manifest.json

@@ -0,0 +1,23 @@
+{
+    "background_color": "#ffffff",
+    "description": "A simple whiteboard for drawing and sharing ideas",
+    "dir": "ltr",
+    "display": "fullscreen",
+    "name": "simplewhiteboard",
+    "orientation": "any",
+    "scope": "/",
+    "icons": [
+        {
+          "src": "/favicon.png",
+          "purpose": "any",
+          "type": "png",
+          "sizes": "1024x1024"
+        },
+        {
+            "src": "/favicon64.png",
+            "purpose": "any",
+            "type": "png",
+            "sizes": "64x64"
+          },
+    ]
+}

svelte.config.js

@@ -0,0 +1,18 @@
+import adapter from '@sveltejs/adapter-auto';
+import { vitePreprocess } from '@sveltejs/kit/vite';
+
+/** @type {import('@sveltejs/kit').Config} */
+const config = {
+	// Consult https://kit.svelte.dev/docs/integrations#preprocessors
+	// for more information about preprocessors
+	preprocess: vitePreprocess(),
+
+	kit: {
+		// adapter-auto only supports some environments, see https://kit.svelte.dev/docs/adapter-auto for a list.
+		// If your environment is not supported or you settled on a specific environment, switch out the adapter.
+		// See https://kit.svelte.dev/docs/adapters for more information about adapters.
+		adapter: adapter()
+	}
+};
+
+export default config;

tailwind.config.js

@@ -0,0 +1,204 @@
+import plugin from 'tailwindcss/plugin';
+
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+	content: [
+		'./index.html',
+		'./src/**/*.{html,svelte,js,ts}',
+	],
+	theme: {
+		screens: {
+			sm: '480px',
+			md: '768px',
+			lg: '976px',
+			xl: '1440px'
+		},
+		extend: {
+			spacing: {
+				128: '32rem',
+				144: '36rem'
+			},
+			borderRadius: {
+				'4xl': '2rem'
+			}
+		},
+		colors: {
+			'primary-yellow': '#FFBF00',
+			'yellow-secondary': '#FFE066',
+			'blue-dark': '#110042',
+			'blue-primary': '#4263EB',
+			'blue-light': '#96DDFF',
+			black: '#000000',
+			white: '#FFFFFF',
+			'off-white': '#F7F7F7',
+			'grey-dark': '#8E8E93',
+			'grey-primary': '#C7C7CC',
+			'grey-light': '#E5E5EA'
+		},
+		fontFamily: {
+			sans: ['Source Sans Pro', 'sans-serif'],
+			redacted: ['Redacted Script', 'redacted']
+		}
+	},
+	plugins: [
+		plugin(function ({ addComponents, addUtilities }) {
+			addComponents({});
+			addUtilities({
+				'.display-1': {
+					fontFamily: 'Source Sans Pro',
+					fontStyle: 'normal',
+					fontWeight: 600,
+					fontSize: '64px',
+					lineHeight: '72px',
+					letterSpacing: '-0.25px'
+				},
+				'.display-2': {
+					fontFamily: 'Source Sans Pro',
+					fontStyle: 'normal',
+					fontWeight: 600,
+					fontSize: '48px',
+					lineHeight: '56px'
+				},
+				'.display-3': {
+					fontFamily: 'Source Sans Pro',
+					fontStyle: 'normal',
+					fontWeight: 600,
+					fontSize: '40px',
+					lineHeight: '48px'
+				},
+				'.h-2': {
+					fontFamily: 'Source Sans Pro',
+					fontStyle: 'normal',
+					fontWeight: 600,
+					fontSize: '28px',
+					lineHeight: '36px'
+				},
+				'.h-3': {
+					fontFamily: 'Source Sans Pro',
+					fontStyle: 'normal',
+					fontWeight: 600,
+					fontSize: '24px',
+					lineHeight: '32px'
+				},
+				'.title-1': {
+					fontFamily: 'Source Sans Pro',
+					fontStyle: 'normal',
+					fontWeight: 600,
+					fontSize: '24px',
+					lineHeight: '30px',
+					letterSpacing: '0.5px'
+				},
+				'.title-2': {
+					fontFamily: 'Source Sans Pro',
+					fontStyle: 'normal',
+					fontWeight: 600,
+					fontSize: '16px',
+					lineHeight: '24px',
+					letterSpacing: '0.2px'
+				},
+
+				'.title-3': {
+					fontFamily: 'Source Sans Pro',
+					fontStyle: 'normal',
+					fontWeight: 600,
+					fontSize: '14px',
+					lineHeight: '20px',
+					letterSpacing: '0.16px'
+				},
+				'.label-1': {
+					fontFamily: 'Source Sans Pro',
+					fontStyle: 'normal',
+					fontWeight: 600,
+					fontSize: '18px',
+					lineHeight: '28px',
+					letterSpacing: '0.2px'
+				},
+				'.label-2': {
+					fontFamily: 'Source Sans Pro',
+					fontStyle: 'normal',
+					fontWeight: 600,
+					fontSize: '16px',
+					lineHeight: '24px',
+					letterSpacing: '0.4px'
+				},
+
+				'.label-3': {
+					fontFamily: 'Source Sans Pro',
+					fontStyle: 'normal',
+					fontWeight: 600,
+					fontSize: '14px',
+					lineHeight: '20px',
+					letterSpacing: '0.6px'
+				},
+				'.body-1': {
+					fontFamily: 'Source Sans Pro',
+					fontStyle: 'normal',
+					fontWeight: 400,
+					fontSize: '16px',
+					lineHeight: '24px'
+				},
+
+				'.body-2': {
+					fontFamily: 'Source Sans Pro',
+					fontStyle: 'normal',
+					fontWeight: 400,
+					fontSize: '14px',
+					lineHeight: '20px',
+					letterSpacing: '0.08px'
+				},
+				'.body-3': {
+					fontFamily: 'Source Sans Pro',
+					fontStyle: 'normal',
+					fontWeight: 400,
+					fontSize: '12px',
+					lineHeight: '16px',
+					letterSpacing: '0.2px'
+				},
+				'.overline': {
+					fontFamily: 'Source Sans Pro',
+					fontStyle: 'normal',
+					fontWeight: 400,
+					fontSize: '12px',
+					lineHeight: '16px',
+					letterSpacing: '0.8px',
+					textTransform: 'uppercase'
+				},
+
+				'.caption': {
+					fontFamily: 'Source Sans Pro',
+					fontStyle: 'normal',
+					fontWeight: 400,
+					fontSize: '12px',
+					lineHeight: '16px',
+					letterSpacing: '0.5px'
+				},
+
+				'.redacted-1': {
+					fontFamily: 'Redacted Script',
+					fontStyle: 'normal',
+					fontWeight: 400,
+					fontSize: '16px',
+					lineHeight: '24px'
+				},
+				'.redacted-2': {
+					fontFamily: 'Redacted Script',
+					fontStyle: 'normal',
+					fontWeight: 400,
+					fontSize: '14px',
+					lineHeight: '20px',
+					letterSpacing: '0.08px'
+				},
+
+				'.redacted-3': {
+					fontFamily: 'Redacted Script',
+					fontStyle: 'normal',
+					fontWeight: 400,
+					fontSize: '12px',
+					lineHeight: '16px',
+					letterSpacing: '0.2px'
+				}
+			});
+		})
+	],
+	darkMode: 'class'
+};

tsconfig.json

@@ -0,0 +1,26 @@
+{
+	"extends": "./.svelte-kit/tsconfig.json",
+	"compilerOptions": {
+		"allowJs": true,
+		"checkJs": true,
+		"esModuleInterop": true,
+		"forceConsistentCasingInFileNames": true,
+		"resolveJsonModule": true,
+		"skipLibCheck": true,
+		"sourceMap": true,
+		"strict": true,
+		"useUnknownInCatchVariables": true,
+		"allowSyntheticDefaultImports": true,
+		"isolatedModules": true,
+		"preserveValueImports": false,
+		"noImplicitAny": true,
+		"noEmitOnError": false,
+		"ignoreDeprecations": "5.0",
+		"importsNotUsedAsValues": "preserve"
+	},
+	"exclude": ["tests"],
+	// Path aliases are handled by https://kit.svelte.dev/docs/configuration#alias
+	//
+	// If you want to overwrite includes/excludes, make sure to copy over the relevant includes/excludes
+	// from the referenced tsconfig.json - TypeScript does not merge them in
+}

vite.config.ts

@@ -0,0 +1,12 @@
+import { sveltekit } from '@sveltejs/kit/vite';
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+	server: {
+		open: true
+	},
+	plugins: [sveltekit()],
+	test: {
+		include: ['src/**/*.{test,spec}.{js,ts}']
+	}
+});