feat: implemet normalizeWhitespace

ui/src/lib/utils/common/normalizeWhitespace.ts

@@ -0,0 +1,10 @@
+export function normalizeWhitespace(str: string) {
+  // replace newline and tab with a space: https://stackoverflow.com/questions/10805125
+  let newText = str.replace(/\r?\n|\r?\t/g, ' ');
+  // normalize multiple spaces: https://stackoverflow.com/questions/1981349
+  newText = newText.replace(/\s\s+/g, ' ');
+
+  newText = newText.trimStart();
+
+  return newText;
+}

ui/src/lib/utils/common/normarlizeWhitespace.test.ts

@@ -0,0 +1,12 @@
+import { normalizeWhitespace } from '@/lib/utils/common/normalizeWhitespace';
+
+describe('normalizeWhitespace', () => {
+  test.each([
+    ['  a  b  c  ', 'a b c '],
+    ['  a\nb\n\n\n\nc  ', 'a b c '],
+    ['  a\tb\t\t\t\tc  ', 'a b c '],
+    [' \n\n\t a\n\t\n  b\t\n\tc  ', 'a b c '],
+  ])('should normalize whitespace', (input, expected) => {
+    expect(normalizeWhitespace(input)).toBe(expected);
+  });
+});