• Add -a --auto-type flag to dsv2json to use d3.autoType. Thanks, @joallard!

This release adopts ES2015 language features such as for-of and drops support for older browsers, including IE. If you need to support pre-ES2015 environments, you should stick with d3-dsv 1.x or use a transpiler.

• Add d3.csvFormatRow.
• Add d3.csvFormatValue.
• Add d3.tsvFormatRow.
• Add d3.tsvFormatValue.
• Add dsv.formatRow.
• Add dsv.formatValue.
• Add sideEffects: false to the package.json.

• Fix undefined fields for missing trailing columns; these are now empty strings. #48
• Fix for Safari’s incorrect parsing of local dates. #53
• Adopt exact paths for imports.
• Adopt explicit files when publishing.
• Update dependencies.

• Favor a more concise ISO 8601 format for dates in dsv.format and dsv.formatRows. (#44)

• Add d3.autoType for automatic type inference when parsing! (#6)
• Add dsv.formatBody, d3.csvFormatBody, and d3.tsvFormatBody. (#34)
• In dsv.format and dsv.formatRows, use date.toISOString to format dates. (#41)

• Housekeeping.

• Update dependencies.

• Fix missing data.columns when the string to parse is empty (#31). Thanks, @tomwanzek!

• Fix broken d3 global in vanilla environments. Thanks, @curran! (#29)

• Fix parsing when the last field is empty (e.g., foo,bar,).

• Fix escaping of strings containing carriage returns. Thanks, @jsedlacek! (#22)

• Added dsv2dsv, dsv2json and json2dsv command-line tools.

• The csv2json and related command-line tools now support newline-delimited JSON (#19).

• Add module entry point to package.json.

• First stable release.

Changes since D3 3.x

Pursuant to the great namespace flattening, various CSV and TSV methods have new names:

• d3.csv.parse ↦ d3.csvParse
• d3.csv.parseRows ↦ d3.csvParseRows
• d3.csv.format ↦ d3.csvFormat
• d3.csv.formatRows ↦ d3.csvFormatRows
• d3.tsv.parse ↦ d3.tsvParse
• d3.tsv.parseRows ↦ d3.tsvParseRows
• d3.tsv.format ↦ d3.tsvFormat
• d3.tsv.formatRows ↦ d3.tsvFormatRows

The d3.csv and d3.tsv methods for loading files of the corresponding formats have not been renamed, however! Those are defined in d3-request.There’s no longer a d3.dsv method, which served the triple purpose of defining a DSV formatter, a DSV parser and a DSV requestor; instead, there’s just d3.dsvFormat which you can use to define a DSV formatter and parser. You can use request.response to make a request and then parse the response body, or just use d3.text.

The dsv.parse method now exposes the column names and their input order as data.columns. For example:

d3.csv("cars.csv", function(error, data) {
  if (error) throw error;
  console.log(data.columns); // ["Year", "Make", "Model", "Length"]
});

You can likewise pass an optional array of column names to dsv.format to format only a subset of columns, or to specify the column order explicitly:

var string = d3.csvFormat(data, ["Year", "Model", "Length"]);

The parser is a bit faster and the formatter is a bit more robust: inputs are coerced to strings before formatting, fixing an obscure crash, and deprecated support for falling back to dsv.formatRows when the input data is an array of arrays has been removed.

See CHANGES for all D3 changes since 3.x.

• Export to the global d3 in vanilla environments (d3/d3#2840).

• Fix string coercion during formatting.

• Relax rw dependency.

• Rename d3.dsv to d3.dsvFormat (#15).

• Renamed d3.csv.parse to d3.csvParse.
• Renamed d3.csv.parseRows to d3.csvParseRows.
• Renamed d3.csv.format to d3.csvFormat.
• Renamed d3.csv.formatRows to d3.csvFormatRows.
• Renamed d3.tsv.parse to d3.tsvParse.
• Renamed d3.tsv.parseRows to d3.tsvParseRows.
• Renamed d3.tsv.format to d3.tsvFormat.
• Renamed d3.tsv.formatRows to d3.tsvFormatRows.
• Removed d3.csv and d3.tsv (#14).

• dsv.parse now passes the column names to the row function.

• dsv.format now takes an optional array of column names.

• Expose the columns array in the result of dsv.parse.

• Define d3-dsv module (and d3_dsv global), not dsv.

• Adjust the package.json definition for npm users.