I tried to custom timesSlot component using components.timesSlotWrapper, every I click the event the app bit laggy and I noticed every I click the event it will be trigger rerender timesSlotWrapper
You are correct. This component has been around for a while, and currently has very little memoization preventing rerendering. Something we hope to address in the 'next' version.
Check that this is really a bug
Reproduction link
https://codesandbox.io/p/sandbox/zen-meadow-xh9n9k?file=%2Fsrc%2FReactBigCalendar.js%3A12%2C26&layout=%257B%2522sidebarPanel%2522%253A%2522EXPLORER%2522%252C%2522rootPanelGroup%2522%253A%257B%2522direction%2522%253A%2522horizontal%2522%252C%2522contentType%2522%253A%2522UNKNOWN%2522%252C%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522id%2522%253A%2522ROOT_LAYOUT%2522%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522contentType%2522%253A%2522UNKNOWN%2522%252C%2522direction%2522%253A%2522vertical%2522%252C%2522id%2522%253A%2522clyzvc20b00063b6js5cdjmfn%2522%252C%2522sizes%2522%253A%255B100%252C0%255D%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522contentType%2522%253A%2522EDITOR%2522%252C%2522direction%2522%253A%2522horizontal%2522%252C%2522id%2522%253A%2522EDITOR%2522%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL%2522%252C%2522contentType%2522%253A%2522EDITOR%2522%252C%2522id%2522%253A%2522clyzvc20b00023b6j19pah1df%2522%257D%255D%257D%252C%257B%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522contentType%2522%253A%2522SHELLS%2522%252C%2522direction%2522%253A%2522horizontal%2522%252C%2522id%2522%253A%2522SHELLS%2522%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL%2522%252C%2522contentType%2522%253A%2522SHELLS%2522%252C%2522id%2522%253A%2522clyzvc20b00033b6jllfl0twv%2522%257D%255D%252C%2522sizes%2522%253A%255B100%255D%257D%255D%257D%252C%257B%2522type%2522%253A%2522PANEL_GROUP%2522%252C%2522contentType%2522%253A%2522DEVTOOLS%2522%252C%2522direction%2522%253A%2522vertical%2522%252C%2522id%2522%253A%2522DEVTOOLS%2522%252C%2522panels%2522%253A%255B%257B%2522type%2522%253A%2522PANEL%2522%252C%2522contentType%2522%253A%2522DEVTOOLS%2522%252C%2522id%2522%253A%2522clyzvc20b00053b6jdle2ltrs%2522%257D%255D%252C%2522sizes%2522%253A%255B100%255D%257D%255D%252C%2522sizes%2522%253A%255B50%252C50%255D%257D%252C%2522tabbedPanels%2522%253A%257B%2522clyzvc20b00023b6j19pah1df%2522%253A%257B%2522tabs%2522%253A%255B%257B%2522id%2522%253A%2522clyzvc20b00013b6jybqpiu24%2522%252C%2522mode%2522%253A%2522permanent%2522%252C%2522type%2522%253A%2522FILE%2522%252C%2522filepath%2522%253A%2522%252Fsrc%252Findex.js%2522%252C%2522state%2522%253A%2522IDLE%2522%257D%252C%257B%2522id%2522%253A%2522clyzvqs8q00023b6jlhlgvjol%2522%252C%2522mode%2522%253A%2522permanent%2522%252C%2522type%2522%253A%2522FILE%2522%252C%2522initialSelections%2522%253A%255B%257B%2522startLineNumber%2522%253A12%252C%2522startColumn%2522%253A26%252C%2522endLineNumber%2522%253A12%252C%2522endColumn%2522%253A26%257D%255D%252C%2522filepath%2522%253A%2522%252Fsrc%252FReactBigCalendar.js%2522%252C%2522state%2522%253A%2522IDLE%2522%257D%255D%252C%2522id%2522%253A%2522clyzvc20b00023b6j19pah1df%2522%252C%2522activeTabId%2522%253A%2522clyzvqs8q00023b6jlhlgvjol%2522%257D%252C%2522clyzvc20b00053b6jdle2ltrs%2522%253A%257B%2522tabs%2522%253A%255B%257B%2522id%2522%253A%2522clyzvc20b00043b6jvo1x8zjk%2522%252C%2522mode%2522%253A%2522permanent%2522%252C%2522type%2522%253A%2522UNASSIGNED_PORT%2522%252C%2522port%2522%253A0%252C%2522path%2522%253A%2522%252F%2522%257D%255D%252C%2522id%2522%253A%2522clyzvc20b00053b6jdle2ltrs%2522%252C%2522activeTabId%2522%253A%2522clyzvc20b00043b6jvo1x8zjk%2522%257D%252C%2522clyzvc20b00033b6jllfl0twv%2522%253A%257B%2522tabs%2522%253A%255B%255D%252C%2522id%2522%253A%2522clyzvc20b00033b6jllfl0twv%2522%257D%257D%252C%2522showDevtools%2522%253Atrue%252C%2522showShells%2522%253Afalse%252C%2522showSidebar%2522%253Atrue%252C%2522sidebarPanelSize%2522%253A15%257D
Bug description
I tried to custom timesSlot component using components.timesSlotWrapper, every I click the event the app bit laggy and I noticed every I click the event it will be trigger rerender timesSlotWrapper
Expected Behavior
No response
Actual Behavior
No response
react-big-calendar version
0.33.3
React version
17.0.2
Platform/Target and Browser Versions
macos
Validations
Would you like to open a PR for this bug?