use fields and fix precommit #527

Job	Run time
list-examples	5s
check-export (azure_auth)	51s
check-export (ag_grid_finance)	52s
check-export (clock)	54s
check-export (dalle)	51s
check-export (basic_crud)	55s
check-export (counter)	52s
check-export (flux-fast)	49s
check-export (data_visualisation)	49s
check-export (linkinbio)	53s
check-export (local-component)	49s
check-export (json-tree)	54s
check-export (github-stats)	55s
check-export (form-designer)	55s
check-export (nba)	54s
check-export (lorem-stream)	40s
check-export (quiz)	43s
check-export (todo)	51s
check-export (nba-proxy)	54s
check-export (reflexle)	51s
check-export (overkey)	53s
check-export (snakegame)	49s
check-export (twitter)	55s
check-export (translator)	56s
check-export (traversal)	49s
check-export (upload)	52s
	21m 31s

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