toTop.js Send certain objects to the top of the stack.

toTop.js

/**
*  toTop()
*  Send certain objects to top of the stack.
*/
const toTop = (col, what, where) => {
  const ttop = [];
  const tail = [];
  
  col.forEach((i) => {
    if(i[where] == what){
      ttop.push(i);
    }else{
      tail.push(i);
    }
  });
  
  return ttop.concat(tail);
};

/**

Example:

const col = [
  { l: 'a', p: 1 },
  { l: 'e', p: 2 },
  { l: 'i', p: 4 },
  { l: 'g', p: 3 },
  { l: 'b', p: 1 },
  { l: 'f', p: 2 },
  { l: 'c', p: 1 },
  { l: 'i', p: 4 },
  { l: 'h', p: 3 },
  { l: 'd', p: 1 }
];

const what = 1;     // Value.
const where = 'p';  // Property.

console.log(toTop(col, what, where));

*/