chore: Minor fixes #4856

docs/syntax/flowchart.md

@@ -852,7 +852,10 @@ This feature is applicable to node labels, edge labels, and subgraph labels.
 
 The auto wrapping can be disabled by using
 
-    %%{init: {"markdownAutoWrap": false} }%%
+    ---
+    config:
+      markdownAutoWrap: false
+    ---
     graph LR
 
 ## Interaction

packages/mermaid/src/docs/syntax/flowchart.md

@@ -540,7 +540,10 @@ This feature is applicable to node labels, edge labels, and subgraph labels.
 The auto wrapping can be disabled by using
 
 ```
-%%{init: {"markdownAutoWrap": false} }%%
+---
+config:
+  markdownAutoWrap: false
+---
 graph LR
 ```
 

packages/mermaid/src/rendering-util/createText.ts

@@ -1,5 +1,6 @@
 /* eslint-disable @typescript-eslint/no-explicit-any */
 // @ts-nocheck TODO: Fix types
+import type { MermaidConfig } from '../config.type.js';
 import type { Group } from '../diagram-api/types.js';
 import type { D3TSpanElement, D3TextElement } from '../diagrams/common/commonTypes.js';
 import { log } from '../logger.js';
@@ -181,13 +182,14 @@ export const createText = (
     isNode = true,
     width = 200,
     addSvgBackground = false,
-  } = {}
+  } = {},
+  config: MermaidConfig = {}
 ) => {
   log.info('createText', text, style, isTitle, classes, useHtmlLabels, isNode, addSvgBackground);
   if (useHtmlLabels) {
     // TODO: addHtmlLabel accepts a labelStyle. Do we possibly have that?
 
-    const htmlText = markdownToHTML(text);
+    const htmlText = markdownToHTML(text, config);
     const node = {
       isNode,
       label: decodeEntities(htmlText).replace(
@@ -199,7 +201,7 @@ export const createText = (
     const vertexNode = addHtmlSpan(el, node, width, classes, addSvgBackground);
     return vertexNode;
   } else {
-    const structuredText = markdownToLines(text);
+    const structuredText = markdownToLines(text, config);
     const svgLabel = createFormattedText(width, el, structuredText, addSvgBackground);
     return svgLabel;
   }

packages/mermaid/src/rendering-util/handle-markdown-text.spec.ts

@@ -1,6 +1,6 @@
+/* eslint-disable no-irregular-whitespace */
 import { markdownToLines, markdownToHTML } from './handle-markdown-text.js';
 import { test, expect } from 'vitest';
-import { setConfig } from '../config.js';
 
 test('markdownToLines - Basic test', () => {
   const input = `This is regular text
@@ -204,6 +204,31 @@ Word!`;
   expect(output).toEqual(expectedOutput);
 });
 
+test('markdownToLines - No auto wrapping', () => {
+  expect(
+    markdownToLines(
+      `Hello, how do
+  you do?`,
+      { markdownAutoWrap: false }
+    )
+  ).toMatchInlineSnapshot(`
+    [
+      [
+        {
+          "content": "Hello, how do",
+          "type": "normal",
+        },
+      ],
+      [
+        {
+          "content": "you do?",
+          "type": "normal",
+        },
+      ],
+    ]
+  `);
+});
+
 test('markdownToHTML - Basic test', () => {
   const input = `This is regular text
 Here is a new line
@@ -265,9 +290,11 @@ test('markdownToHTML - Unsupported formatting', () => {
 });
 
 test('markdownToHTML - no auto wrapping', () => {
-  setConfig({ markdownAutoWrap: false });
   expect(
-    markdownToHTML(`Hello, how do
-  you do?`)
+    markdownToHTML(
+      `Hello, how do
+  you do?`,
+      { markdownAutoWrap: false }
+    )
   ).toMatchInlineSnapshot('"<p>Hello,&nbsp;how&nbsp;do<br/>you&nbsp;do?</p>"');
 });

packages/mermaid/src/rendering-util/handle-markdown-text.ts

@@ -2,14 +2,13 @@ import type { Content } from 'mdast';
 import { fromMarkdown } from 'mdast-util-from-markdown';
 import { dedent } from 'ts-dedent';
 import type { MarkdownLine, MarkdownWordType } from './types.js';
-import { getConfig } from '../config.js';
+import type { MermaidConfig } from '../config.type.js';
 
 /**
  * @param markdown - markdown to process
  * @returns processed markdown
  */
-function preprocessMarkdown(markdown: string): string {
-  const markdownAutoWrap = getConfig().markdownAutoWrap;
+function preprocessMarkdown(markdown: string, { markdownAutoWrap }: MermaidConfig): string {
   // Replace multiple newlines with a single newline
   const withoutMultipleNewlines = markdown.replace(/\n{2,}/g, '\n');
   // Remove extra spaces at the beginning of each line
@@ -23,8 +22,8 @@ function preprocessMarkdown(markdown: string): string {
 /**
  * @param markdown - markdown to split into lines
  */
-export function markdownToLines(markdown: string): MarkdownLine[] {
-  const preprocessedMarkdown = preprocessMarkdown(markdown);
+export function markdownToLines(markdown: string, config: MermaidConfig = {}): MarkdownLine[] {
+  const preprocessedMarkdown = preprocessMarkdown(markdown, config);
   const { children } = fromMarkdown(preprocessedMarkdown);
   const lines: MarkdownLine[] = [[]];
   let currentLine = 0;
@@ -61,17 +60,15 @@ export function markdownToLines(markdown: string): MarkdownLine[] {
   return lines;
 }
 
-export function markdownToHTML(markdown: string) {
+export function markdownToHTML(markdown: string, { markdownAutoWrap }: MermaidConfig = {}) {
   const { children } = fromMarkdown(markdown);
-  const markdownAutoWrap = getConfig().markdownAutoWrap;
 
   function output(node: Content): string {
     if (node.type === 'text') {
       if (markdownAutoWrap === false) {
         return node.value.replace(/\n/g, '<br/>').replace(/ /g, '&nbsp;');
-      } else {
-        return node.value.replace(/\n/g, '<br/>');
       }
+      return node.value.replace(/\n/g, '<br/>');
     } else if (node.type === 'strong') {
       return `<strong>${node.children.map(output).join('')}</strong>`;
     } else if (node.type === 'emphasis') {

packages/mermaid/src/schemas/config.schema.yaml

@@ -237,6 +237,7 @@ properties:
     default: 16
   markdownAutoWrap:
     type: boolean
+    default: true
 
 $defs: # JSON Schema definition (maybe we should move these to a separate file)
   BaseDiagramConfig: