Column data will be lost if the column name is the same

[jasmine-song]

console.log(d3.tsvParse("bar\tbar\n1\t2"))

If there is the same column name, the data in the previous column is overwritten by the following column
How do I keep data with the same column name

[Philippe Rivière]

As per the documentation:

If the column names are not unique, only the last value is returned for each name; to access all values, use dsv.parseRows instead (see example).