/**
@func 
remove junk (non-value-based data) from an arr

@param {*[]} a
@return {*[]}
*/
export const removeNonVals = a => a.filter(v => {
  return v !== null && v !== undefined
    && !(v.constructor === String && v.trim() === "")
    && !(v.constructor === Object && Object.keys(v).length === 0)
    && !(Array.isArray(v) && v.length === 0)
});

//@tests

//@fixtureData
const aDirty = [
  "Casbah", "abcd",
  "", "p",
  "", "255",
  undefined, null,
  "", "     ",
  [], {}, "[]", "{}"
  [[]],
  [["nested"]],
  NaN, Infinity, 0, -0,
  5, -1, 1e30, BigInt(3145),
  n => n
  , , , , ,
];

const aClean = removeNonVals(aDirty);
console.log(aClean);
/*
@output
[
  'Casbah',               'abcd',
  'p',                    '255',
  'Warsaw',               '1855',
  '[]',                   [ [ 'nested' ] ],
  NaN,                    Infinity,
  0,                      -0,
  5,                      -1,
  1e+30,                  3145n,
  [Function (anonymous)]
]
*/

//@perftest
timeInLoop("removeNonVals", 1e6, () => removeNonVals(aDirty))
/*
removeNonVals: 1e+6: 2.601s
*/