test: Migrate to vitest from jest

__mocks__/MERMAID.js

@@ -1,3 +0,0 @@
-export const curveBasis = 'basis';
-export const curveLinear = 'linear';
-export const curveCardinal = 'cardinal';

__mocks__/d3.ts

@@ -1,3 +1,6 @@
+// @ts-nocheck
+import { vi } from 'vitest';
+
 let NewD3 = function () {
   /**
    *
@@ -56,9 +59,9 @@ export const MockD3 = (name, parent) => {
     children.push(mockElem);
     return mockElem;
   };
-  elem.lower = jest.fn(() => elem);
-  elem.attr = jest.fn(() => elem);
-  elem.text = jest.fn(() => elem);
-  elem.style = jest.fn(() => elem);
+  elem.lower = vi.fn(() => elem);
+  elem.attr = vi.fn(() => elem);
+  elem.text = vi.fn(() => elem);
+  elem.style = vi.fn(() => elem);
   return elem;
 };

__mocks__/dagre-d3.ts

@@ -0,0 +1,3 @@
+import { vi } from 'vitest';
+
+// export const render = vi.fn();

__mocks__/entity-decode/browser.ts

@@ -0,0 +1,3 @@
+module.exports = function (txt: string) {
+  return txt;
+};