Adds URL validation (#1155)

front/src/utils/__tests__/is-url.test.ts

@@ -0,0 +1,35 @@
+import { isURL } from '~/utils/is-url';
+
+describe('isURL', () => {
+  it(`should return false if null`, () => {
+    expect(isURL(null)).toBeFalsy();
+  });
+
+  it(`should return false if undefined`, () => {
+    expect(isURL(undefined)).toBeFalsy();
+  });
+
+  it(`should return true if string google`, () => {
+    expect(isURL('google')).toBeFalsy();
+  });
+
+  it(`should return true if string google.com`, () => {
+    expect(isURL('google.com')).toBeTruthy();
+  });
+
+  it(`should return true if string bbc.co.uk`, () => {
+    expect(isURL('bbc.co.uk')).toBeTruthy();
+  });
+
+  it(`should return true if string web.io`, () => {
+    expect(isURL('web.io')).toBeTruthy();
+  });
+
+  it(`should return true if string x.com`, () => {
+    expect(isURL('x.com')).toBeTruthy();
+  });
+
+  it(`should return true if string 2.com`, () => {
+    expect(isURL('2.com')).toBeTruthy();
+  });
+});

front/src/utils/is-url.ts

@@ -0,0 +1,10 @@
+import { isDefined } from './isDefined';
+
+export function isURL(url: string | undefined | null) {
+  return (
+    isDefined(url) &&
+    /^((?!-))(xn--)?[a-z0-9][a-z0-9-_]{0,61}[a-z0-9]{0,1}\.(xn--)?([a-z0-9-]{1,61}|[a-z0-9-]{1,30}\.[a-z]{2,})$/.test(
+      url,
+    )
+  );
+}