Benchmark: destructuring X undefined X null X delete X new reference

Tests:

Destructuring
const user = { email: '123@email.com', password: 'AA&Â&A*&AA' }; const {password, toBeReturned} = user;
Undefined
const user = { email: '123@email.com', password: 'AA&Â&A*&AA' }; user.password = undefined;
Null
const user = { email: '123@email.com', password: 'AA&Â&A*&AA' }; user.password = null;
Delete
const user = { email: '123@email.com', password: 'AA&Â&A*&AA' }; delete user.password;
New reference
const user = { email: '123@email.com', password: 'AA&Â&A*&AA' }; const toBeReturned = {email: user.email};

Rendered benchmark preparation results:

Previous results

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Latest run results:

Run details: (Test run date: 4 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/84.0.4147.89 Safari/537.36

Browser/OS: Chrome 84 on Windows

destructuring X undefined X null X delete X new reference (version: 0)