Save R JSON object with new lines for each record

Question

I\'m trying to save a JSON object where each line is a record. How can I save the JSON object so that the number of lines is equal to the number of records (5 in example below)

Answer 1

use jsonlite::stream_out

df <- mtcars[1:5,]
jsonlite::stream_out(df, file('tmp.json'))

that gives newline delimited JSON or "ndjson"