const every = (list, fn) => {
  for(let i = 0, len = list.length; i < len; i++) {
    if(!fn(list[i])) return [];
  }
  return list;
}


const assert = (val1, val2) => {
  if (val1 !== val2) { throw new Error(`${val1.toString()} is not ${val2.toString()}`) }
}
const l = [1, 2, 3, 0]
assert(every(l, i => i < 5), l);
assert(every(l, i => i === 0).length, 0);

const EQ = (selector, criteria) => {
  return (...list) => {
    var r = list.filter(item =>  selector(item) === criteria)
    console.log(r, 'eq')
    return r;
  }
}  
assert(EQ(i => i, 1)(...l).length, 1);
assert(EQ(i => i, 5)(...l).length, 0);

const OR = (...filters) => {
  console.log('#', filters)  

  return (...list) => list.filter(item => {
    const r = filters.filter(f => {
      return f(item).length > 0
   } )
    console.log('or', r, filters, item)
    return r;
  })
}
assert(
  OR(
    EQ(i => i, 1),
    EQ(i => i, 3),
  )(...l).length, 2
)

/**assert(
  OR(
    EQ(i => i, 1),
    EQ(i => i, 1),
    OR(
      EQ(i => i, 1),
      EQ(i => i, 1),
    ),
  )(...l).length, 1
)



const AND = (...filters) => 
  (...list) => {
    const end = every(list, item => {
    const r = every(filters, f => 
      f(item).length > 0
    ).length > 0
    console.log('and', r)
    return r
    })
    console.log('andend', end)
    return end;
  };



const yourFilter = AND(
  OR(
    EQ(i => i.name, 'ben'),
    EQ(i => i.name, 'y'),
  ),
  OR(
    EQ(i => i.id, 1),
    EQ(i => i.id, 2),
  ),
  EQ(i => i.id, 1),
  /*EQUALS('id', 3),
  EQUALS('name', 'sep'),
);

console.log('=',
  yourFilter(
    {id: 1, name: 'ben'},
    {id: 2, name: 'y'},
    {id: 3, name: 'z'},
  )
)**/