chore: Update favicon

* 'sidv/mindmap' of https://github.com/mermaid-js/mermaid-live-editor:
  Update Browserslist

.eslintrc.cjs

@@ -44,6 +44,7 @@ module.exports = {
 		],
 		'@typescript-eslint/no-unsafe-member-access': 'off',
 		'@typescript-eslint/no-unsafe-assignment': 'off',
-		'es/no-regexp-lookbehind-assertions': 'error'
+		'es/no-regexp-lookbehind-assertions': 'error',
+		curly: ['error', 'all']
 	}
 };

.github/workflows/tests.yml

@@ -48,4 +48,3 @@ jobs:
           parallel: true
         env:
           CYPRESS_RECORD_KEY: ${{ secrets.CYPRESS_RECORD_KEY }}
-          MERMAID_DISABLE_DEBOUNCE: 'true'

.github/workflows/update-browserlist.yml

@@ -1,10 +1,9 @@
 name: Update Browserslist
 on:
-  workflow_dispatch:
   push:
-    branches:
-      - develop
-
+    branches-ignore:
+      - 'develop'
+      - 'master'
 jobs:
   build:
     runs-on: ubuntu-latest

.vscode/settings.json

@@ -4,5 +4,6 @@
 	"vitest.commandLine": "yarn test:unit",
 	"vitest.enable": true,
 	"testing.autoRun.mode": "rerun",
-	"svelte.enable-ts-plugin": true
+	"svelte.enable-ts-plugin": true,
+	"githubPullRequests.ignoredPullRequestBranches": ["develop"]
 }

Dockerfile

@@ -6,7 +6,7 @@
 # Stop               : press ctrl + c 
 #                                     or 
 #                                        docker stop mermaid-live-editor
-FROM node:18.9.0 as mermaid-live-editor-builder 
+FROM node:18.10.0 as mermaid-live-editor-builder 
 COPY --chown=node:node . /home
 WORKDIR /home
 RUN yarn install

cypress/e2e/diagramUpdate.spec.ts

@@ -9,8 +9,10 @@ describe('Auto sync tests', () => {
 	it('should dim diagram when code is edited', () => {
 		cy.contains('Auto sync').click();
 		cy.get('#view').should('not.have.class', 'outOfSync');
+		cy.get('#view').should('not.contain.text', 'Diagram out of sync.');
 		getEditor().type('  C --> Test');
 		cy.get('#view').should('have.class', 'outOfSync');
+		cy.get('#view').should('contain.text', 'Diagram out of sync.');
 		cy.getLocalStorage('codeStore').snapshot();
 	});
 
@@ -19,7 +21,9 @@ describe('Auto sync tests', () => {
 		cy.get('#view').should('not.have.class', 'outOfSync');
 		getEditor().type('  C --> Test');
 		cy.get('#view').should('have.class', 'outOfSync');
+		cy.get('#view').should('contain.text', 'Diagram out of sync.');
 		getEditor().type(`${cmd}{enter}`);
+		cy.get('#view').should('not.contain.text', 'Diagram out of sync.');
 		cy.get('#view').should('not.have.class', 'outOfSync');
 	});
 

package.json

@@ -5,7 +5,8 @@
 	"license": "MIT",
 	"scripts": {
 		"dev": "vite dev",
-		"dev:test": "MERMAID_DISABLE_DEBOUNCE=true yarn dev",
+		"dev:force": "MERMAID_LOCAL=true yarn dev --force",
+		"dev:test": "yarn dev",
 		"build": "vite build",
 		"preview": "vite preview",
 		"lint": "prettier --check --cache --plugin-search-dir=. .;eslint --ignore-path .gitignore .",
@@ -22,55 +23,53 @@
 	},
 	"devDependencies": {
 		"@cypress/snapshot": "2.1.7",
-		"@sveltejs/adapter-static": "1.0.0-next.42",
-		"@sveltejs/kit": "1.0.0-next.480",
+		"@sveltejs/adapter-static": "1.0.0-next.44",
+		"@sveltejs/kit": "1.0.0-next.511",
 		"@testing-library/jest-dom": "5.16.5",
-		"@testing-library/svelte": "3.2.1",
-		"@types/mermaid": "8.2.9",
+		"@testing-library/svelte": "3.2.2",
 		"@types/pako": "2.0.0",
 		"@types/uuid": "8.3.4",
-		"@typescript-eslint/eslint-plugin": "5.36.2",
-		"@typescript-eslint/parser": "5.36.2",
-		"@vitest/ui": "0.23.1",
-		"autoprefixer": "10.4.8",
+		"@typescript-eslint/eslint-plugin": "5.39.0",
+		"@typescript-eslint/parser": "5.39.0",
+		"@vitest/ui": "0.24.0",
+		"autoprefixer": "10.4.12",
 		"c8": "7.12.0",
 		"chai": "4.3.6",
 		"cssnano": "5.1.13",
-		"cy-verify-downloads": "0.1.8",
-		"cypress": "10.7.0",
+		"cy-verify-downloads": "0.1.11",
+		"cypress": "10.9.0",
 		"cypress-localstorage-commands": "2.2.1",
-		"eslint": "8.23.0",
+		"eslint": "8.25.0",
 		"eslint-config-prettier": "8.5.0",
 		"eslint-plugin-cypress": "2.12.1",
 		"eslint-plugin-es": "4.1.0",
 		"eslint-plugin-postcss-modules": "2.0.0",
 		"eslint-plugin-svelte3": "4.0.0",
-		"eslint-plugin-tailwindcss": "3.6.1",
+		"eslint-plugin-tailwindcss": "3.6.2",
 		"eslint-plugin-vitest": "0.0.8",
 		"esserializer": "1.3.2",
 		"husky": "8.0.1",
-		"jsdom": "20.0.0",
+		"jsdom": "20.0.1",
 		"lint-staged": "13.0.3",
-		"node-html-parser": "6.0.0",
-		"postcss": "8.4.16",
+		"node-html-parser": "6.1.1",
+		"postcss": "8.4.17",
 		"postcss-load-config": "4.0.1",
 		"prettier": "2.7.1",
-		"prettier-plugin-svelte": "2.7.0",
+		"prettier-plugin-svelte": "2.8.0",
 		"svelte": "3.50.1",
 		"svelte-preprocess": "4.10.7",
 		"tailwindcss": "3.1.8",
 		"tslib": "2.4.0",
-		"typescript": "4.8.3",
-		"vite": "3.1.0",
-		"vitest": "0.23.1"
+		"typescript": "4.8.4",
+		"vite": "3.1.7",
+		"vitest": "0.24.0"
 	},
 	"dependencies": {
-		"@analytics/google-analytics": "1.0.3",
 		"analytics": "0.8.1",
 		"analytics-plugin-plausible": "0.0.6",
-		"daisyui": "2.25.0",
+		"daisyui": "2.31.0",
 		"js-base64": "3.7.2",
-		"mermaid": "9.1.6",
+		"mermaid": "9.2.0-rc6",
 		"moment": "2.29.4",
 		"monaco-editor": "0.34.0",
 		"monaco-mermaid": "1.0.6",

renovate.json

@@ -14,10 +14,6 @@
 		{
 			"matchUpdateTypes": ["minor", "patch", "pin", "digest"],
 			"automerge": true
-		},
-		{
-			"matchDatasources": ["npm"],
-			"stabilityDays": 3
 		}
 	],
 	"dependencyDashboard": true,

src/app.html

@@ -11,7 +11,9 @@
 		<meta
 			name="description"
 			content="Simplify documentation and avoid heavy tools. Open source Visio Alternative. Commonly used for explaining your code! Mermaid is a simple markdown-like script language for generating charts from text via javascript." />
-		<link rel="icon" type="image/png" href="%sveltekit.assets%/favicon.png" />
+		<link rel="icon" type="image/png" href="%sveltekit.assets%/favicon.svg" />
+		<link rel="mask-icon" href="%sveltekit.assets%/favicon.svg" color="#000000" />
+		<meta name="theme-color" content="#6366F1" />
 		<link rel="manifest" href="%sveltekit.assets%/manifest.json" />
 		<link
 			rel="stylesheet"
@@ -28,8 +30,8 @@
 		<script>
 			var require = {
 				paths: {
-					vs: "https://cdnjs.cloudflare.com/ajax/libs/monaco-editor/0.34.0/min/vs",
-				},
+					vs: 'https://cdnjs.cloudflare.com/ajax/libs/monaco-editor/0.34.0/min/vs'
+				}
 			};
 		</script>
 		<script

src/env.d.ts

@@ -0,0 +1,14 @@
+/// <reference types="vite/client" />
+
+interface ImportMetaEnv {
+	readonly MERMAID_RENDERER_URL: string;
+	readonly MERMAID_KROKI_RENDERER_URL: string;
+	readonly MERMAID_CDN_URL: string;
+	readonly MERMAID_BASE_URL: string;
+	readonly MERMAID_LOCAL: boolean;
+	// more env variables...
+}
+
+interface ImportMeta {
+	readonly env: ImportMetaEnv;
+}

src/lib/components/actions.svelte

@@ -1,12 +1,13 @@
 <script lang="ts">
 	import { browser } from '$app/environment';
 	import Card from '$lib/components/card/card.svelte';
-	import { krokiRendererUrl, rendererUrl } from '$lib/util/env';
+	import { env } from '$lib/util/env';
 	import { pakoSerde } from '$lib/util/serde';
 	import { stateStore } from '$lib/util/state';
 	import { logEvent } from '$lib/util/stats';
 	import { toBase64 } from 'js-base64';
 	import moment from 'moment';
+	const { krokiRendererUrl, rendererUrl } = env;
 
 	type Exporter = (context: CanvasRenderingContext2D, image: HTMLImageElement) => () => void;
 
@@ -115,19 +116,19 @@
 
 	const onCopyClipboard = (event: Event) => {
 		exportImage(event, clipboardCopy);
-		void logEvent('copyClipboard');
+		logEvent('copyClipboard');
 	};
 
 	const onDownloadPNG = (event: Event) => {
 		exportImage(event, downloadImage);
-		void logEvent('download', {
+		logEvent('download', {
 			type: 'png'
 		});
 	};
 
 	const onDownloadSVG = () => {
 		simulateDownload(getFileName('svg'), `data:image/svg+xml;base64,${getBase64SVG()}`);
-		void logEvent('download', {
+		logEvent('download', {
 			type: 'svg'
 		});
 	};
@@ -135,7 +136,7 @@
 	const onCopyMarkdown = () => {
 		(document.getElementById('markdown') as HTMLInputElement).select();
 		document.execCommand('Copy');
-		void logEvent('copyMarkdown');
+		logEvent('copyMarkdown');
 	};
 
 	let gistURL = '';
@@ -151,7 +152,7 @@
 			alert('Please enter a Gist URL first');
 		}
 		window.location.href = `${window.location.pathname}?gist=${gistURL}`;
-		void logEvent('loadGist');
+		logEvent('loadGist');
 	};
 
 	let iUrl: string;
@@ -166,7 +167,7 @@
 		isNetlify = true;
 	}
 	stateStore.subscribe(({ code, serialized }) => {
-		iUrl = `${rendererUrl}/img/${serialized}`;
+		iUrl = `${rendererUrl}/img/${serialized}?type=png`;
 		svgUrl = `${rendererUrl}/svg/${serialized}`;
 		krokiUrl = `${krokiRendererUrl}/mermaid/svg/${pakoSerde.serialize(code)}`;
 		mdCode = `[![](${iUrl})](${window.location.protocol}//${window.location.host}${window.location.pathname}#${serialized})`;
@@ -180,26 +181,24 @@
 				><i class="far fa-copy mr-2" /> Copy Image to clipboard
 			</button>
 		{/if}
-		<button id="downloadPNG" class="action-btn flex-auto" on:click={onDownloadPNG}>
+		<button id="downloadPNG" class="action-btn flex-grow" on:click={onDownloadPNG}>
 			<i class="fas fa-download mr-2" /> PNG
 		</button>
-		<button id="downloadSVG" class="action-btn flex-auto" on:click={onDownloadSVG}>
+		<button id="downloadSVG" class="action-btn flex-grow" on:click={onDownloadSVG}>
 			<i class="fas fa-download mr-2" /> SVG
 		</button>
-		<a target="_blank" href={iUrl}>
-			<button class="action-btn flex-auto">
+		<a target="_blank" class="flex-grow" href={iUrl}>
+			<button class="action-btn w-full">
 				<i class="fas fa-external-link-alt mr-2" /> PNG
 			</button>
 		</a>
-
-		<a target="_blank" href={svgUrl}>
-			<button class="action-btn flex-auto">
+		<a target="_blank" class="flex-grow" href={svgUrl}>
+			<button class="action-btn w-full">
 				<i class="fas fa-external-link-alt mr-2" /> SVG
 			</button>
 		</a>
-
-		<a target="_blank" href={krokiUrl}>
-			<button class="action-btn flex-auto">
+		<a target="_blank" class="flex-grow" href={krokiUrl}>
+			<button class="action-btn w-full">
 				<i class="fas fa-external-link-alt mr-2" /> Kroki
 			</button>
 		</a>

src/lib/components/editor.svelte

@@ -7,7 +7,6 @@
 	import { onMount } from 'svelte';
 	import initEditor from 'monaco-mermaid';
 	import { logEvent } from '$lib/util/stats';
-	import { debounceEnabled } from '$lib/util/env';
 
 	let divEl: HTMLDivElement = null;
 	let editor: monaco.editor.IStandaloneCodeEditor;
@@ -37,10 +36,8 @@
 			Monaco?.editor.setModelLanguage(editor.getModel(), language);
 		}
 
-		// Display errors if present
-		if (errorMarkers.length > 0) {
-			Monaco?.editor.setModelMarkers(editor.getModel(), 'test', errorMarkers);
-		}
+		// Display/clear errors
+		Monaco?.editor.setModelMarkers(editor.getModel(), 'mermaid', errorMarkers);
 	});
 
 	themeStore.subscribe(({ isDark }) => {
@@ -55,31 +52,16 @@
 		}
 	};
 
-	// Debounce state updates to avoid performance issues
-	let debounce: { [key: string]: number } = {};
-	const updateHandler = (newText: string) => {
-		text = newText;
-		const mode = $stateStore.editorMode;
-		if (debounceEnabled) {
-			clearTimeout(debounce[mode]);
-			debounce[mode] = window.setTimeout(() => {
-				handleUpdate(text, mode);
-			}, 300);
-		} else {
-			handleUpdate(text, mode);
-		}
-	};
-
 	const loadMonaco = async () => {
+		console.log('Loading Monaco...');
 		let i = 0;
 		while (i++ < 500) {
-			try {
-				// @ts-ignore : This is a hack to handle a svelte-kit error when importing monaco.
-				Monaco = window.monaco;
+			// @ts-ignore : This is a hack to handle a svelte-kit error when importing monaco.
+			Monaco = window.monaco;
+			if (Monaco !== undefined) {
 				return;
-			} catch {
-				await new Promise((r) => setTimeout(r, 100));
 			}
+			await new Promise((r) => setTimeout(r, 100));
 		}
 		alert('Loading Monaco Editor failed. Please try refreshing the page.');
 	};
@@ -89,7 +71,8 @@
 		initEditor(Monaco);
 		editor = Monaco.editor.create(divEl, editorOptions);
 		editor.onDidChangeModelContent(() => {
-			updateHandler(editor.getValue());
+			text = editor.getValue();
+			handleUpdate(text, $stateStore.editorMode);
 		});
 		editor.addAction({
 			id: 'mermaid-render-diagram',
@@ -97,7 +80,7 @@
 			keybindings: [Monaco.KeyMod.CtrlCmd | Monaco.KeyCode.Enter],
 			run: function () {
 				syncDiagram();
-				void logEvent('renderDiagram', {
+				logEvent('renderDiagram', {
 					method: 'keyboadShortcut'
 				});
 			}

src/lib/components/navbar.svelte

@@ -39,7 +39,7 @@
 	];
 </script>
 
-<div class="navbar mb-2 shadow-lg bg-primary">
+<div class="navbar shadow-lg bg-primary p-0">
 	<div class="flex-1 px-2 mx-2">
 		<span class="text-lg font-bold">
 			<a href="/">Mermaid<span class="text-xs font-thin">v{version}</span> Live Editor</a>

src/lib/components/preset.svelte

@@ -100,7 +100,7 @@
 			updateDiagram: true,
 			resetPanZoom: true
 		});
-		void logEvent('loadSampleDiagram', { diagramType });
+		logEvent('loadSampleDiagram', { diagramType });
 	};
 </script>
 

src/lib/components/view.svelte

@@ -1,10 +1,11 @@
 <script lang="ts">
 	import { inputStateStore, stateStore, updateCodeStore } from '$lib/util/state';
 	import { onMount } from 'svelte';
-	import mermaid from 'mermaid';
 	import panzoom from 'svg-pan-zoom';
-	import type { State } from '$lib/types';
+	import type { State, ValidatedState } from '$lib/types';
 	import { logEvent } from '$lib/util/stats';
+	import { cmdKey } from '$lib/util/util';
+	import { render as renderDiagram } from '$lib/util/mermaid';
 
 	let code = '';
 	let config = '';
@@ -16,16 +17,12 @@
 	let manualUpdate = true;
 	let panZoomEnabled = $stateStore.panZoom;
 	let pzoom: SvgPanZoom.Instance;
-	let debounce: number;
 
 	const handlePanZoomChange = () => {
 		const pan = pzoom.getPan();
 		const zoom = pzoom.getZoom();
-		clearTimeout(debounce);
-		debounce = window.setTimeout(() => {
-			updateCodeStore({ pan, zoom });
-			void logEvent('panZoom');
-		}, 200);
+		updateCodeStore({ pan, zoom });
+		logEvent('panZoom');
 	};
 
 	const handlePanZoom = (state: State) => {
@@ -53,50 +50,61 @@
 		});
 	};
 
-	onMount(() => {
-		stateStore.subscribe((state) => {
-			if (state.error !== undefined) {
-				error = true;
-				return;
-			}
-			error = false;
-			try {
-				if (container && state && (state.updateDiagram || state.autoSync)) {
-					if (!state.autoSync) {
-						$inputStateStore.updateDiagram = false;
-					}
-					outOfSync = false;
-					manualUpdate = true;
-					if (code === state.code && config === state.mermaid && panZoomEnabled === state.panZoom) {
-						// Do not render if there is no change in Code/Config/PanZoom
-						return;
-					}
-					code = state.code;
-					config = state.mermaid;
-					panZoomEnabled = state.panZoom;
-					const scroll = view.parentElement.scrollTop;
-					delete container.dataset.processed;
-					mermaid.initialize(Object.assign({}, JSON.parse(state.mermaid)));
-					mermaid.render('graph-div', code, (svgCode) => {
+	const handleStateChange = async (state: ValidatedState) => {
+		if (state.error !== undefined) {
+			error = true;
+			return;
+		}
+		error = false;
+		try {
+			if (container && state && (state.updateDiagram || state.autoSync)) {
+				if (!state.autoSync) {
+					$inputStateStore.updateDiagram = false;
+				}
+				outOfSync = false;
+				manualUpdate = true;
+				if (code === state.code && config === state.mermaid && panZoomEnabled === state.panZoom) {
+					// Do not render if there is no change in Code/Config/PanZoom
+					return;
+				}
+				code = state.code;
+				config = state.mermaid;
+				panZoomEnabled = state.panZoom;
+				const scroll = view.parentElement.scrollTop;
+				delete container.dataset.processed;
+				await renderDiagram(
+					Object.assign({}, JSON.parse(state.mermaid)),
+					code,
+					'graph-div',
+					(svgCode, bindFunctions) => {
 						if (svgCode.length > 0) {
 							handlePanZoom(state);
 							container.innerHTML = svgCode;
 							const graphDiv = document.getElementById('graph-div');
 							graphDiv.setAttribute('height', '100%');
 							graphDiv.style.maxWidth = '100%';
+							if (bindFunctions) {
+								bindFunctions(graphDiv);
+							}
 						}
-					});
-					view.parentElement.scrollTop = scroll;
-					error = false;
-				} else if (manualUpdate) {
-					manualUpdate = false;
-				} else if (code !== state.code || config !== state.mermaid) {
-					outOfSync = true;
-				}
-			} catch (e) {
-				console.error('view fail', e);
-				error = true;
+					}
+				);
+				view.parentElement.scrollTop = scroll;
+				error = false;
+			} else if (manualUpdate) {
+				manualUpdate = false;
+			} else if (code !== state.code || config !== state.mermaid) {
+				outOfSync = true;
 			}
+		} catch (e) {
+			console.error('view fail', e);
+			error = true;
+		}
+	};
+
+	onMount(() => {
+		stateStore.subscribe(async (state) => {
+			await handleStateChange(state);
 		});
 		window.addEventListener('resize', () => {
 			if ($stateStore.panZoom && pzoom) {
@@ -110,6 +118,12 @@
 	<div class="p-2 text-red-600" id="errorContainer">{$stateStore.error}</div>
 {/if}
 
+{#if outOfSync}
+	<div class="absolute w-full p-2 z-10 text-yellow-600 bg-base-100 bg-opacity-80 text-center">
+		Diagram out of sync. <br />
+		Press <i class="fas fa-sync" /> (Sync button) or <kbd>{cmdKey} + Enter</kbd> to sync.
+	</div>
+{/if}
 <div id="view" bind:this={view} class="p-2 h-full" class:error class:outOfSync>
 	<div id="container" bind:this={container} class="h-full overflow-auto" class:hide />
 </div>

src/lib/util/env.ts

@@ -1,5 +1,9 @@
-export const rendererUrl: string =
-	(import.meta.env.MERMAID_RENDERER_URL as string) ?? 'https://mermaid.ink';
-export const krokiRendererUrl: string =
-	(import.meta.env.MERMAID_KROKI_RENDERER_URL as string) ?? 'https://kroki.io';
-export const debounceEnabled: boolean = import.meta.env.MERMAID_DISABLE_DEBOUNCE !== 'true';
+export const env = {
+	rendererUrl: import.meta.env.MERMAID_RENDERER_URL ?? 'https://mermaid.ink',
+	krokiRendererUrl: import.meta.env.MERMAID_KROKI_RENDERER_URL ?? 'https://kroki.io',
+	mermaidCDNUrl: import.meta.env.MERMAID_CDN_URL ?? 'https://unpkg.com/@mermaid-js',
+	mermaidBaseURL: import.meta.env.MERMAID_BASE_URL ?? 'http://localhost:9000',
+	useLocalMermaid: import.meta.env.MERMAID_LOCAL ?? false,
+	isDev: import.meta.env.DEV,
+	baseURL: import.meta.env.BASE_URL
+};

src/lib/util/mermaid.ts

@@ -0,0 +1,47 @@
+import mermaid from 'mermaid';
+// We need to export MermaidConfig and all related types from mermaid.
+import type { MermaidConfig } from 'mermaid/dist/config.type';
+import { env } from './env';
+const { mermaidBaseURL, mermaidCDNUrl, useLocalMermaid } = env;
+
+const getDiagramURL = (name: string, version: string): string => {
+	if (useLocalMermaid) {
+		return `${mermaidBaseURL}/${name}-detector.esm.mjs`;
+	}
+	return `${mermaidCDNUrl}/${name}@${version}/dist/${name}-detector.esm.mjs`;
+};
+
+console.log(mermaid);
+const initialize = mermaid.initializeAsync({
+	logLevel: 0,
+	lazyLoadedDiagrams: [getDiagramURL('mermaid-mindmap', '9.2.0-rc4')],
+	loadExternalDiagramsAtStartup: true
+});
+
+export const init = async () => {
+	await initialize;
+};
+
+export const render = async (
+	config: MermaidConfig,
+	code: string,
+	id: string,
+	callback: Parameters<typeof mermaid.render>[2]
+): Promise<void> => {
+	await init();
+	// Should be able to call this multiple times without any issues.
+	// await mermaid.initialize({
+	// 	...config,
+	// 	lazyLoadedDiagrams: [
+	// 		// We should make SRI mandatory for all lazy-loaded diagrams.
+	// 		'https://unpkg.com/@mermaid-js/mermaid-mindmap@9.2.0-rc2/dist/mermaid-mindmap-detector.esm.mjs'
+	// 	]
+	// });
+	console.log('Rendering', code);
+	await mermaid.mermaidAPI.renderAsync(id, code, callback);
+};
+
+export const parse = async (code: string): Promise<boolean> => {
+	await init();
+	return mermaid.parseAsync(code);
+};

src/lib/util/state.ts

@@ -1,13 +1,15 @@
 import { writable, get, derived } from 'svelte/store';
 import { persist, localStorage } from './persist';
-import { saveStatistics } from './stats';
+import { saveStatistics, countLines } from './stats';
 import { serializeState, deserializeState } from './serde';
 import { cmdKey } from './util';
-import mermaid from 'mermaid';
+import { parse, init } from './mermaid';
 
 import type { Readable } from 'svelte/store';
 import type { MarkerData, State, ValidatedState } from '$lib/types';
 
+void init();
+
 export const defaultState: State = {
 	code: `graph TD
     A[Christmas] -->|Get money| B(Go shopping)
@@ -42,41 +44,53 @@ const urlParseFailedState = `graph TD
 export const inputStateStore = persist(writable(defaultState), localStorage(), 'codeStore');
 
 // All internal reads should be done via stateStore, but it should not be persisted/shared externally.
-export const stateStore: Readable<ValidatedState> = derived([inputStateStore], ([state]) => {
-	const processed: ValidatedState = {
-		...state,
+export const stateStore: Readable<ValidatedState> = derived(
+	[inputStateStore],
+	// eslint-disable-next-line @typescript-eslint/ban-ts-comment
+	// @ts-ignore
+	async ([state], set) => {
+		const processed: ValidatedState = {
+			...state,
+			serialized: '',
+			errorMarkers: [],
+			error: undefined,
+			editorMode: state.editorMode ?? 'code'
+		};
+
+		// No changes should be done to fields part of `state`.
+		try {
+			processed.serialized = serializeState(state);
+			await parse(state.code);
+			JSON.parse(state.mermaid);
+		} catch (e) {
+			processed.error = e;
+			console.error(e);
+			if (e.hash) {
+				try {
+					const marker: MarkerData = {
+						severity: 8, // Error
+						startLineNumber: e.hash.loc.first_line,
+						startColumn: e.hash.loc.first_column,
+						endLineNumber: e.hash.loc.last_line,
+						endColumn: (e.hash.loc.last_column as number) + 1,
+						message: e.str
+					};
+					processed.errorMarkers = [marker];
+				} catch (err) {
+					console.error('Error without line helper', err);
+				}
+			}
+		}
+		set(processed);
+	},
+	{
+		...get(inputStateStore),
 		serialized: '',
 		errorMarkers: [],
 		error: undefined,
-		editorMode: state.editorMode ?? 'code'
-	};
-
-	// No changes should be done to fields part of `state`.
-	try {
-		processed.serialized = serializeState(state);
-		mermaid.parse(state.code);
-		JSON.parse(state.mermaid);
-	} catch (e) {
-		processed.error = e;
-		console.error(e);
-		if (e.hash) {
-			try {
-				const marker: MarkerData = {
-					severity: 8, // Error
-					startLineNumber: e.hash.loc.first_line,
-					startColumn: e.hash.loc.first_column,
-					endLineNumber: e.hash.loc.last_line,
-					endColumn: (e.hash.loc.last_column as number) + 1,
-					message: e.str
-				};
-				processed.errorMarkers = [marker];
-			} catch (err) {
-				console.error('Error without line helper', err);
-			}
-		}
+		editorMode: get(inputStateStore).editorMode ?? 'code'
 	}
-	return processed;
-});
+);
 
 export const loadState = (data: string): void => {
 	let state: State;
@@ -121,8 +135,8 @@ export const updateCode = (
 		resetPanZoom = false
 	}: { updateDiagram?: boolean; resetPanZoom?: boolean } = {}
 ): void => {
+	const lines = countLines(code);
 	saveStatistics(code);
-	const lines = (code.match(/\n/g) || '').length + 1;
 
 	if (lines > 50 && !prompted && get(stateStore).autoSync) {
 		const turnOff = confirm(
@@ -162,9 +176,13 @@ export const toggleDarkTheme = (dark: boolean): void => {
 	});
 };
 
+let urlDebounce: number;
 export const initURLSubscription = (): void => {
 	stateStore.subscribe(({ serialized }) => {
-		history.replaceState(undefined, undefined, `#${serialized}`);
+		clearTimeout(urlDebounce);
+		urlDebounce = window.setTimeout(() => {
+			history.replaceState(undefined, undefined, `#${serialized}`);
+		}, 250);
 	});
 };
 

src/lib/util/stats.test.ts

@@ -0,0 +1,19 @@
+import { describe, it, expect } from 'vitest';
+import { detectType } from './stats';
+describe('diagram detection', () => {
+	it('should detect diagrams correctly', () => {
+		expect(
+			detectType(`%%{{
+			graph`)
+		).toBe('graph');
+		expect(detectType(`gitGraph`)).toBe('gitGraph');
+		expect(
+			detectType(`%%{{
+
+
+			flowChart
+			graph`)
+		).toBe('flowChart');
+		expect(detectType(`loki -> thor`)).toBe(undefined);
+	});
+});

src/lib/util/stats.ts

@@ -1,25 +1,17 @@
 import { browser } from '$app/environment';
 import type { AnalyticsInstance } from 'analytics';
-
 export let analytics: AnalyticsInstance;
 
 export const initAnalytics = async (): Promise<void> => {
 	if (browser && !analytics) {
 		try {
-			const { Analytics } = await import('analytics');
-			// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
-			const googleAnalytics = (await import('@analytics/google-analytics')).default;
-			const plausible = (await import('analytics-plugin-plausible')).default;
+			const [{ Analytics }, { default: plausible }] = await Promise.all([
+				import('analytics'),
+				import('analytics-plugin-plausible')
+			]);
 			analytics = Analytics({
 				app: 'mermaid-live-editor',
-				// eslint-disable-next-line @typescript-eslint/no-unsafe-assignment
 				plugins: [
-					// eslint-disable-next-line @typescript-eslint/no-unsafe-call, @typescript-eslint/no-unsafe-member-access
-					googleAnalytics({
-						measurementIds: ['UA-153180559-1']
-					}),
-					// eslint-disable-next-line @typescript-eslint/ban-ts-comment
-					// @ts-ignore
 					plausible({
 						domain: 'mermaid.live',
 						hashMode: false,
@@ -35,28 +27,72 @@ export const initAnalytics = async (): Promise<void> => {
 	}
 };
 
-const detectType = (text: string): string => {
-	return text
+export const detectType = (text: string): string => {
+	const possibleDiagramTypes = [
+		'classDiagram',
+		'erDiagram',
+		'flowChart',
+		'gantt',
+		'gitGraph',
+		'graph',
+		'journey',
+		'pie',
+		'stateDiagram'
+	];
+	const firstLine = text
 		.replace(/^\s*%%.*\n/g, '\n')
 		.trimStart()
-		.split(' ')[0];
+		.split(' ')[0]
+		.toLowerCase();
+	const detectedDiagram = possibleDiagramTypes.find((d) => firstLine.includes(d.toLowerCase()));
+	return detectedDiagram;
+};
+
+export const countLines = (code: string): number => {
+	return (code.match(/\n/g) || '').length + 1;
 };
 
-// manual debounce
-let timeout: number;
 export const saveStatistics = (graph: string): void => {
-	if (analytics) {
-		clearTimeout(timeout);
-		// Only save statistics after a 5 sec delay
-		timeout = window.setTimeout(() => {
-			const graphType = detectType(graph);
-			console.debug(`ga: send event: render ${graphType}`);
-			void logEvent('render', { graphType });
-		}, 5000);
+	const graphType = detectType(graph);
+	if (!graphType) {
+		return;
 	}
+	const length = countLines(graph);
+	logEvent('render', { graphType, length });
 };
 
-// eslint-disable-next-line @typescript-eslint/no-explicit-any
-export const logEvent = async (name: string, data?: any): Promise<void> => {
-	await analytics?.track(name, data);
+const minutesToMilliSeconds = (minutes: number): number => {
+	return minutes * 60_000;
+};
+
+const defaultDelay = minutesToMilliSeconds(1);
+const delaysPerEvent = {
+	render: minutesToMilliSeconds(5),
+	panZoom: minutesToMilliSeconds(10),
+	copyClipboard: defaultDelay,
+	download: defaultDelay,
+	copyMarkdown: defaultDelay,
+	loadGist: defaultDelay,
+	loadSampleDiagram: defaultDelay,
+	renderDiagram: defaultDelay,
+	history: defaultDelay,
+	migration: defaultDelay,
+	themeChange: defaultDelay
+};
+export type AnalyticsEvent = keyof typeof delaysPerEvent;
+const timeouts: Record<string, number> = {};
+// manual debounce to reduce the number of events sent to analytics
+export const logEvent = (name: AnalyticsEvent, data?: unknown): void => {
+	if (!analytics) {
+		return;
+	}
+	const key = data ? JSON.stringify({ name, data }) : name;
+	if (timeouts[key] === undefined) {
+		void analytics.track(name, data);
+	} else {
+		clearTimeout(timeouts[key]);
+	}
+	timeouts[key] = window.setTimeout(() => {
+		delete timeouts[key];
+	}, delaysPerEvent[name]);
 };

src/lib/util/theme.ts

@@ -34,5 +34,5 @@ export const setTheme = (theme: string): void => {
 	const isDark = darkThemes.includes(theme);
 	console.log('Setting theme', theme);
 	themeStore.set({ theme, isDark });
-	void logEvent('themeChange', { theme, isDark });
+	logEvent('themeChange', { theme, isDark });
 };

static/favicon.svg

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg width="100%" height="100%" viewBox="0 0 491 491" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xml:space="preserve" xmlns:serif="http://www.serif.com/" style="fill-rule:evenodd;clip-rule:evenodd;stroke-linejoin:round;stroke-miterlimit:2;">
+    <path d="M490.16,84.61C490.16,37.912 452.248,0 405.55,0L84.61,0C37.912,0 0,37.912 0,84.61L0,405.55C0,452.248 37.912,490.16 84.61,490.16L405.55,490.16C452.248,490.16 490.16,452.248 490.16,405.55L490.16,84.61Z" style="fill:rgb(255,54,112);"/>
+    <path d="M407.48,111.18C335.587,108.103 269.573,152.338 245.08,220C220.587,152.338 154.573,108.103 82.68,111.18C80.285,168.229 107.577,222.632 154.74,254.82C178.908,271.419 193.35,298.951 193.27,328.27L193.27,379.13L296.9,379.13L296.9,328.27C296.816,298.953 311.255,271.42 335.42,254.82C382.596,222.644 409.892,168.233 407.48,111.18Z" style="fill:white;fill-rule:nonzero;"/>
+</svg>

static/manifest.json

@@ -3,12 +3,7 @@
 	"name": "Mermaid Live Editor",
 	"icons": [
 		{
-			"src": "/icon-192.png",
-			"type": "image/png",
-			"sizes": "192x192"
-		},
-		{
-			"src": "/icon-512.png",
+			"src": "/favicon.png",
 			"type": "image/png",
 			"sizes": "512x512"
 		}