feat: add utils package

packages/utils/src/Domain/Utils/Utils.spec.ts

@@ -0,0 +1,61 @@
+import * as DOMPurifyLib from 'dompurify'
+import { JSDOM } from 'jsdom'
+import { sortByKey, withoutLastElement } from './Utils'
+
+const window = new JSDOM('').window
+const DOMPurify = DOMPurifyLib(window as never)
+
+describe('Utils', () => {
+  it('sanitizeHtmlString', () => {
+    const dirty = '<svg><animate onbegin=alert(1) attributeName=x dur=1s>'
+    const cleaned = DOMPurify.sanitize(dirty)
+    expect(cleaned).toEqual('<svg></svg>')
+  })
+
+  it('without last works', () => {
+    expect(withoutLastElement([])).toEqual([])
+    expect(withoutLastElement(['a'])).toEqual([])
+    expect(withoutLastElement(['a', 'b'])).toEqual(['a'])
+    expect(withoutLastElement(['a', 'b', 'c'])).toEqual(['a', 'b'])
+  })
+
+  const sortByKey_INPUT = [
+    { id: 'aza', age: 0, missing: 7 },
+    { id: 'aaa', age: 12, missing: 8 },
+    { id: 'ace', age: 12, missing: 0 },
+    { id: 'zzz', age: -9 },
+  ]
+
+  it('sortByKey sort by key', () => {
+    const input = sortByKey_INPUT
+
+    expect(sortByKey(input, 'id')).toEqual([
+      { id: 'aaa', age: 12, missing: 8 },
+      { id: 'ace', age: 12, missing: 0 },
+      { id: 'aza', age: 0, missing: 7 },
+      { id: 'zzz', age: -9 },
+    ])
+
+    expect(sortByKey(input, 'age')).toEqual([
+      { id: 'zzz', age: -9 },
+      { id: 'aza', age: 0, missing: 7 },
+      { id: 'aaa', age: 12, missing: 8 },
+      { id: 'ace', age: 12, missing: 0 },
+    ])
+
+    expect(sortByKey(input, 'missing')).toEqual([
+      { id: 'ace', age: 12, missing: 0 },
+      { id: 'aza', age: 0, missing: 7 },
+      { id: 'aaa', age: 12, missing: 8 },
+      { id: 'zzz', age: -9 },
+    ])
+  })
+
+  it('sortByKey does not mutate the input & creates a new array', () => {
+    const input = sortByKey_INPUT
+    const initial = [...input]
+
+    expect(sortByKey(input, 'id')).not.toBe(input)
+    expect(initial).toEqual(input)
+  })
+})