log

Logs the current data to the console at the point it appears in .flow(). Useful for debugging.

Signature

log(prefix?)

Parameters

Parameter	Type	Description
prefix	string	Optional prefix to prepend to the log output

Example

.flow(
  spread({ by: "category",  dir: "x" }),
  log("after spread"),   // logs each group
  derive(d => d)
)