Run results for: Tuple versus Object 2

Test name	Executions per second
✓ Plain object	294 Ops/sec
Tuple	192 Ops/sec
Array	186 Ops/sec
Indexed Expando	183 Ops/sec
Expando Object	166 Ops/sec
Plain Indexed	164 Ops/sec

Array

const objects = [];
for(let prev, idx = 0; idx < COUNT; idx++) {
  const obj = [ 
    idx, COUNT-1-idx, prev, null
  ];
  if(prev) prev[3] = obj; 
  prev = obj;
  obj.push(objects.push(obj));  // expanded
  obj.push(objects);   // expanded
}
return objects;

Expando Object

const objects = []
for(let prev, idx = 0; idx < COUNT; idx++) {  
  const obj = { 
    idx, 
    remaining: COUNT-1-idx, 
    prev
  };  
  if(prev) prev.next = obj;  // expanded
  prev = obj;  
  obj.result = objects.push(obj); // expanded
  obj.all = objects; // expanded  
}
return objects;

Indexed Expando

const objects = [];
for(let prev, idx = 0; idx < COUNT; idx++) {
  const obj = { 
    0: idx, 
    1: COUNT-1-idx, 
    2: prev
  };
  if(prev) prev[3] = obj;// expanded
  prev = obj;
  obj[4] = objects.push(obj);// expanded
  obj[5] = objects;  // expanded
}
return objects;

Tuple

const objects = []
for(let prev, idx = 0; idx < COUNT; idx++) {  
  const obj = [ 
    idx, 
    COUNT-1-idx, 
    prev, 
    null, 
    undefined, 
    null
  ];  
  if(prev) prev[3] = obj;  
  prev = obj;    
  obj[4] = objects.push(obj);
  obj[5] = objects;  
}
return objects;

Literal Object

const objects = []
for(let prev, idx = 0; idx < COUNT; idx++) {  
  const obj = { 
    idx, 
    remaining: COUNT-1-idx,
    prev, 
    next: null, 
    result: undefined, 
    all: null
  };  
  if(prev) prev.next = obj;  
  prev = obj;
  obj.result = objects.push(obj);
  obj.all = objects;
}
return objects;

Indexed Literal Object

const objects = [];
for(let prev, idx = 0; idx < COUNT; idx++) {
  const obj = { 
    0: idx, 
    1: COUNT-1-idx, 
    2: prev, 
    3: null, 
    4: undefined, 
    5: null
  };
  if(prev) prev[3] = obj;
  prev = obj;
  obj[4] = objects.push(obj);
  obj[5] = objects;  
}
return objects;