cypress 10 migration (#777)

* cypress 10 migration

* fix lint

cypress/e2e/unit/sanitize.cy.js

@@ -0,0 +1,17 @@
+import { NS } from '../../../instrumented/svgcanvas/namespaces.js'
+import * as sanitize from '../../../instrumented/svgcanvas/sanitize.js'
+
+describe('sanitize', function () {
+  const svg = document.createElementNS(NS.SVG, 'svg')
+
+  it('Test sanitizeSvg() strips ws from style attr', function () {
+    const rect = document.createElementNS(NS.SVG, 'rect')
+    rect.setAttribute('style', 'stroke: blue ;\t\tstroke-width :\t\t40;')
+    // sanitizeSvg() requires the node to have a parent and a document.
+    svg.append(rect)
+    sanitize.sanitizeSvg(rect)
+
+    assert.equal(rect.getAttribute('stroke'), 'blue')
+    assert.equal(rect.getAttribute('stroke-width'), '40')
+  })
+})