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Code Releases Wiki Activity

feat: improve mermaid detection on paste (#8287)

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David Luzar 2024-07-27 12:36:54 +02:00 committed by GitHub
parent 62228e0bbb
commit 2427e622b0
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2 changed files with 19 additions and 3 deletions
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15
packages/excalidraw/mermaid.test.ts Normal file
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@ -0,0 +1,15 @@
import { isMaybeMermaidDefinition } from "./mermaid";
describe("isMaybeMermaidDefinition", () => {
it("should return true for a valid mermaid definition", () => {
expect(isMaybeMermaidDefinition("flowchart")).toBe(true);
expect(isMaybeMermaidDefinition("flowchart LR")).toBe(true);
expect(isMaybeMermaidDefinition("flowchart LR\nola")).toBe(true);
expect(isMaybeMermaidDefinition("%%{}%%flowchart")).toBe(true);
expect(isMaybeMermaidDefinition("%%{}%% flowchart")).toBe(true);
expect(isMaybeMermaidDefinition("graphs")).toBe(false);
expect(isMaybeMermaidDefinition("this flowchart")).toBe(false);
expect(isMaybeMermaidDefinition("this\nflowchart")).toBe(false);
});
});

7
packages/excalidraw/mermaid.ts
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@ -2,6 +2,7 @@
export const isMaybeMermaidDefinition = (text: string) => {
const chartTypes = [
"flowchart",
"graph",
"sequenceDiagram",
"classDiagram",
"stateDiagram",
@ -23,9 +24,9 @@ export const isMaybeMermaidDefinition = (text: string) => {
];
const re = new RegExp(
`^(?:%%{.*?}%%[\\s\\n]*)?\\b${chartTypes
.map((x) => `${x}(-beta)?`)
.join("|")}\\b`,
`^(?:%%{.*?}%%[\\s\\n]*)?\\b(?:${chartTypes
.map((x) => `\\s*${x}(-beta)?`)
.join("|")})\\b`,
);
return re.test(text.trim());