Renamed nullable utils into isDefined and isUndefinedOrNull (#4402)

* Renamed nullable utils into isDefined and isUndefinedOrNull

packages/twenty-front/src/utils/__tests__/isDefined.test.ts

@@ -0,0 +1,15 @@
+import { isDefined } from '~/utils/isDefined';
+
+describe('isDefined', () => {
+  it('returns true if value is not undefined nor null', () => {
+    expect(isDefined('')).toBe(true);
+  });
+
+  it('returns false if value is null', () => {
+    expect(isDefined(null)).toBe(false);
+  });
+
+  it('returns false if value is undefined', () => {
+    expect(isDefined(undefined)).toBe(false);
+  });
+});

packages/twenty-front/src/utils/__tests__/isNonNullable.test.ts

@@ -1,15 +0,0 @@
-import { isNonNullable } from '~/utils/isNonNullable';
-
-describe('isNonNullable', () => {
-  it('returns true if value is not undefined nor null', () => {
-    expect(isNonNullable('')).toBe(true);
-  });
-
-  it('returns false if value is null', () => {
-    expect(isNonNullable(null)).toBe(false);
-  });
-
-  it('returns false if value is undefined', () => {
-    expect(isNonNullable(undefined)).toBe(false);
-  });
-});