Run results for: fp.assign vs fp.set vs spread vs mutable

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/114.0.0.0 Safari/537.36

Browser: Chrome 114

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 10 months ago

HTML Preparation code:

<script src='https://cdn.jsdelivr.net/g/lodash@4(lodash.min.js+lodash.fp.min.js)'></script>

Tests:

fp.assign
const state = { a: '1', b: '2', c: { ca: 1 } }; const report = { c: { cb: 2, }, d: '4', } const newState = _.assign(state, report);
fp.set
const state = { a: '1', b: '2', c: { ca: 1 } }; const report = { c: { cb: 2, }, d: '4', } const newState = _.flow( _.set('c', report.c), _.set('d', report.d), )(state);
spread
const state = { a: '1', b: '2', c: { ca: 1 } }; const report = { c: { cb: 2, }, d: '4', } const newState = { ...state, ...report };
mutable
const state = { a: '1', b: '2', c: { ca: 1 } }; const report = { c: { cb: 2, }, d: '4', } state.c.cb = 2; state.d = '4';