Benchmark: Convert Array to Object - Compare all possible

Script Preparation code:

var data = Array.from(Array(10000).keys()).map(i => ({id: i, value: `val_${i}`}));

Tests:

Object.fromEntries
Object.fromEntries(data.map(obj => [obj.id, obj]));
Reduce (reuse object)
data.reduce((acc, obj) => { acc[obj.id] = obj; return acc; }, {});
Reduce (creating temporary objects)
data.reduce((acc, obj) => ({ ...acc, [obj.id]: obj }), {});
Map
new Map(data.map(obj => [obj.id, obj]));
forEach
const res = {}; data.forEach(obj => { res[obj.id] = obj; });
for of
const res = {}; for (const obj of data) { res[obj.id] = obj; }
for i
const res = {}; for (let i = 0; i < data.length; i++) { res[obj.id] = obj[data[i]]; }
for i saved length variable
const res = {}; cosnt length = data.length; for (let i = 0; i < length; i++) { res[obj.id] = obj[data[i]]; }

Rendered benchmark preparation results:

Previous results

Test case name	Result
Object.fromEntries
Reduce (reuse object)
Reduce (creating temporary objects)
Map
forEach
for of
for i
for i saved length variable

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Convert Array to Object - Compare all possible (version: 0)