isOk.js

function isOk(input) {
  if (Array.isArray(input)) return input.length > 0;
  if (typeof input === 'object' && input) return Object.keys(input).length > 0;
  if (typeof input === 'number') return true;
  return Boolean(input);
}

isOk.test.js

const { isNone } = require('../src/is-none');

test('null | undefined are not OK', () => {
  let input = null;
  let result = isOk(input);
  expect(result).toBe(false);

  input = undefined;
  result = isOk(input);
  expect(result).toBe(false);
});

test('{} is not OK', () => {
  const input = {};
  const result = isOk(input);
  expect(result).toBe(false);
});

test('{ foo: 1, bar: 2 } is OK', () => {
  const input = { foo: 1, bar: 2 };
  const result = isOk(input);
  expect(result).toBe(true);
});

test('[] is not OK', () => {
  const input = [];
  const result = isOk(input);
  expect(result).toBe(false);
});

test('[1, 2, 3] is OK', () => {
  const input = [1, 2, 3];
  const result = isOk(input);
  expect(result).toBe(true);
});

test('"    " is OK', () => {
  const input = '   ';
  const result = isOk(input);
  expect(result).toBe(true);
});

test('"" is OK', () => {
  const input = '';
  const result = isOk(input);
  expect(result).toBe(false);
});

test('"I am foo" is OK', () => {
  const input = '  I am foo  ';
  const result = isOk(input);
  expect(result).toBe(true);
});

test('-1, 0, 1 are OK', () => {
  let input = 0;
  let result = isOk(input);
  expect(result).toBe(true);

  input = 1;
  result = isOk(input);
  expect(result).toBe(true);

  input = -1;
  result = isOk(input);
  expect(result).toBe(true);
});

test('"true" is OK, "false" is not OK', () => {
  let input = true;
  let result = isOk(input);
  expect(result).toBe(true);

  input = false;
  result = isOk(input);
  expect(result).toBe(false);
});

Another version without IF =]]

function isNone(input) {
  switch (true) {
    case typeof input === 'undefined':
      return true
    case typeof input === 'object':
      return Object.keys(input).length === 0
    case typeof input === 'string':
      return input.trim() === ''
    case Array.isArray(input):
      return input.length === 0
    case (typeof input === 'number') || (typeof input === 'boolean'):
      return false
    default:
      return input === undefined || input === null
  }
}