1.0.1 • Published 2 years ago
json2csv-rolling-writer v1.0.1
json2csv-rolling-writer
This is a convenience tool to write a rolling jsonline file/stream to a partial csv file (with headers or columns in a separate file).
How to use:
const jsonLines = [
{ "field1": "val1", "field2": "val2" },
{ "field1": "val1", "field2": "val2", "field3": "val3" },
{ "fieldX": "valX" },
{},
'NOT_VALID_JSON'
];
const opts = {
dir: 'tmp',
fileName: 'tmpfile',
fileExtension: 'csv',
charWhenBlank: '_',
charSeparator: ',',
newLineIfBlank: true,
newLineIfInvalid: true
}
const csvRollingWriter = new Json2CsvRollingWriter({...opts});
jsonLines.forEach((line) => {
csvRollingWriter.write(line);
});
The write will create 2 files
FOR DATA - tmp/tmpfile.csv
FOR COLUMNS - tmp/tmpfile-cols.csv