• skip_lines_with_empty_values: rename to skiprecordswithemptyvalues
  • skip_lines_with_error: rename to skiprecordswith_error
  • relax: rename to relaxquoteswhen_unquoted
  • max_comment_size: new option
  • promise: new API module
  • errors: finish normalisation of all errors

Version 4.8.9


  • sync: disregard emitted null records

New Feature:

  • trim: support form feed character

Minor improvements:

  • src: cache length in loops
  • trim: new sample
  • to_line: simple sample
  • comment: simple sample
  • bom: sample with hidden bom
  • bom: test behavior with the column option

Version 4.8.8

  • api: fix regression in browser environments

Version 4.8.7

  • api: fix input string with output stream

Version 4.8.6

  • on_record: catch and handle user errors

Version 4.8.5

  • ts: fix types declaration

Version 4.8.4

  • ts: fix types declaration to a single file

Version 4.8.3

  • errors: handle undefined captureStackTrace

Version 4.8.2

  • relax_column_count: ts definitions for less and more

Version 4.8.1

  • package: move pad dependency to dev

Version 4.8.0

  • relax_column_count: new less and more options
  • columns: skip empty records before detecting headers

Version 4.7.0

New Feature:

  • on_record: user function to alter and filter records

Minor improvements:

  • test: ensure every sample is valid
  • from_line: honours inferred column names
  • from_line: new sample
  • errors: expose CSV_INVALID_ARGUMENT
  • errors: expose CSV_INVALID_OPTION_BOM
  • errors: expose CSV_INVALID_OPTION_CAST
  • error: fix call to supper

Project management:

  • package: contributing
  • package: code of conduct

Version 4.6.5

  • context: column is null when cast force the context creation, fix #260

Version 4.6.4

  • errors: don't stringify/parse undefined and null values
  • errors: expose CSV_MAX_RECORD_SIZE

Version 4.6.3

  • lint: integrate eslint

Version 4.6.2

  • context: null column when columns number inferior to record length

Version 4.6.1

  • src: set const in for loop

Version 4.6.0

  • skip_lines_with_empty_values: handle non string value
  • errors: add context information
  • tests: new error assertion framework
  • buffer: serialize to json as string
  • errors: expose INVALID_OPENING_QUOTE

Version 4.5.0

  • errors: start normalizing errors with unique codes and context
  • errors: expose CSV_INVALID_CLOSING_QUOTE
  • errors: expose CSV_QUOTE_NOT_CLOSED

Version 4.4.7

  • travis: remove node.js 8 and add 12
  • destroy: test inside readable event

Version 4.4.6

  • security: remove regexp vulnerable to DOS in cast option, npm report 69742

Version 4.4.5

  • ts: add buffer as allowed type for input, fix #248

Version 4.4.4

  • package: latest dependencies
  • bom: detection when buffer smaller than bom
  • package: remove deprecated @types/should dependency
  • package: update file path

Version 4.4.3

  • package: fix files declaration

Version 4.4.2

  • bom: parsing for BOM character #239
  • ts: add sync definition
  • package: replace npm ignore with file field

Version 4.4.1


  • columns: allows returning an array of string, undefined, null or false

Version 4.4.0

New features:

  • options: new bom option

Version 4.3.4

  • columns: enrich error message when provided as literal object
  • cast: handle undefined columns
  • skip_lines_with_error: new sample

Version 4.3.3

Fix: columns: fix es5 generation

Version 4.3.2


  • columns: immutable option

Version 4.3.1

Minor enhancements:

  • ts: distribute definitions with es5
  • ts: unused MatcherFunc type

Project management:

  • babel: include .babelrc to git

Version 4.3.0

New features:

  • objname: accept a buffer

Minor enhancements:

  • to_line: validation refinements
  • trim, ltrim, rtrim: validation refinements
  • to: validation refinements
  • from_line: validation refinements
  • objname: validation refinements
  • from: validation refinements
  • escape: validation refinements
  • skip_empty_lines: validation refinements
  • skip_lines_with_empty_values: validation refinements
  • skip_lines_with_error: validation refinements
  • relax_column_count: validation refinements
  • relax: validation refinements
  • delimiter: validation refinements
  • max_record_size: validation refinements

Version 4.2.0


  • record_delimiter: fix multi bytes with skip_empty_lines and from_line
  • rtrim: accept tab

Version 4.1.0

New features:

  • options: accept snake case and camel case
  • cast: dont call cast for non column-mappable fields


  • cast: ensure column is a string and not an array
  • stream: handle empty input streams
  • cast: function may return non-string values
  • stream: pass stream options without modification

Version 4.0.1


  • relax_column_count: handle records with more columns

Version 4.0.0

This is a complete rewrite based with a Buffer implementation. There are no major breaking changes but it introduces multiple minor breaking changes:

  • option rowDelimiter is now record_delimiter
  • option max_limit_on_data_read is now max_record_size
  • drop the record event
  • normalise error message as {error type}: {error description}
  • state values are now isolated into the info object
  • count is now info.records
  • lines is now info.lines
  • empty_line_count is now info.empty_lines
  • skipped_line_count is now info.invalid_field_length
  • context.count is cast function is now context.records
  • drop support for deprecated options auto_parse and auto_parse_date
  • drop emission of the record event
  • in raw option, the row property is renamed record
  • default value of max_record_size is now 0 (unlimited)
  • remove the record event, use the readable event and instead

New features:

  • new options info, from_line and to_line
  • trim: respect ltrim and rtrim when defined
  • delimiter: may be a Buffer
  • delimiter: handle multiple bytes/characters
  • callback: export info object as third argument
  • cast: catch error in user functions
  • ts: mark info as readonly with required properties
  • comment_lines: count the number of commented lines with no records
  • callback: pass undefined instead of null

API management:

  • Multiple tests have been rewritten with easier data sample
  • Source code is now written in ES6 instead of CoffeeScript
  • package: switch to MIT license

Version 3.2.0

  • max_limit_on_data_read: update error msg
  • src: simplify detection for more data
  • lines: test empty line account for 1 line
  • options: extract default options
  • package: add a few keywords
  • src: precompute escapeIsQuote
  • travis: test against Node.js 11

Version 3.1.3

  • rowDelimiter: fix overlap with delimiter
  • internal: rename rowDelimiterLength to rowDelimiterMaxLength

Version 3.1.2

  • readme: fix links to project website

Version 3.1.1

  • src: generate code

Version 3.1.0

  • package: move to
  • samples: new cast sample
  • package: upgrade to babel 7
  • samples: new mixed api samples
  • samples: new column script
  • samples: update syntax
  • package: improve ignore files

Version 3.0.0

Breaking changes:

  • columns: skip empty values when null, false or undefined


  • sync: refactor internal variables
  • index: use destructuring assignment for deps

Version 2.5.0

  • typescript: make definition header more relevant

Version 2.4.1

  • to: ignore future records when to is reached

Version 2.4.0

  • trim: after and before quote
  • tests: compatibility with Node.js 10
  • trim: handle quote followed by escape
  • parser: set nextChar to null instead of empty
  • travis: run against node 8 and 10

Version 2.3.0

  • cast: pass the header property
  • auto_parse: deprecated message on tests
  • cast: inject lines property

Version 2.2.0

  • cast: deprecate auto_parse
  • auto_parse: function get context as second argument

Version 2.1.0

  • skip_lines_with_error: DRYed implementation
  • skip_lines_with_error: Go process the next line on error
  • events: register and write not blocking
  • test: prefix names by group membership
  • events: emit record
  • raw: test to ensure it preserve columns
  • package: latest dependencies (28 march 2018)
  • raw: ensure tests call and success
  • package: ignore npm and yarn lock files
  • sync: handle errors on last line

Version 2.0.4

  • package: move babel to dev dependencies

Version 2.0.3

  • package: es5 backward compatibility
  • package: ignore yarn lock file

Version 2.0.2

  • package: only remove js files in lib
  • source: remove unreferenced variables #179
  • package: start running tests in preversion
  • package: new release workflow


This major version use CoffeeScript 2 which produces a modern JavaScript syntax (ES6, or ES2015 and later) and break the compatibility with versions of Node.js lower than 7.6 as well as the browsers. It is however stable in term of API.

  • package: use CoffeeScript 2


  • package: revert to CoffeeScript 1


Irrelevant release, forgot to generate the coffee files.


  • package: preserve compatibility with Node.js < 7.6


  • options: auto_parse as a user function
  • options: auto_parse_date as a user function
  • test: should require handled by mocha
  • package: coffeescript 2 and use semver tilde
  • options: ensure objectMode is cloned


  • relax_column_count: honors count while preserving skippedlinecount
  • api: improve argument validation


  • sync: catch err on write


  • relax: handle double quote


  • src: group state variable initialisation
  • package: update repo url
  • quote: disabled when null, false or empty
  • src: remove try/catch
  • src: optimize estimation for row delimiter length
  • lines: improve tests
  • src: use in instead of multiple is
  • src: string optimization


  • skip default row delimiters when quoted #58
  • auto_parse: cleaner implementation
  • src: isolate internal variables


  • options: new to and from options


  • rowDelimiters: fix all last month issues


  • regression with trim and last empty field #123


  • rowDelimiter: simplification
  • fix regression when trim and skipemptylines activated #122
  • auto_parse = simplify internal function


  • src: trailing whitespace and empty headers #120
  • rowDelimiter: adding support for multiple row delimiters #119
  • Remove unnecessary argument: Parser.prototype.__write #114


  • skip_lines_with_empty_values: support space and tabs #108
  • test: remove coverage support
  • test: group by api, options and properties
  • skip_lines_with_empty_values option
  • write test illustrating column function throwing an error #98
  • added ability to skip columns #50


  • reduce substr usage
  • new raw option


  • empty_line_count counter and renamed skipped to skipped_line_count
  • skipped line count


  • avoid de-optimisation due to wrong charAt index #103
  • parser writing before assigning listeners


  • columns: stop on column count error #100


  • make the parser more sensitive to input
  • test case about the chunks of multiple chars without quotes
  • test about data emission with newline


  • stream: call end if data instance of buffer
  • travis: add nodejs 6
  • columns: fix line error #97


  • relax_column_count: default to false (strict)


  • relax_column_count: backward compatibility for 1.0.x
  • relax_column_count: introduce new option
  • columns: detect column length and fix lines count


  • fix quotes tests that used data with inconsistent number of #73
  • add tests for inconsistent number of columns #73
  • throw an error when a column is missing #73
  • travis: test nodejs versions 4, 5
  • max_limit_on_data_read: new option
  • removing the duplicate files in test and samples #86
  • option argument to accept the number of bytes can be read #86
  • avoid unwanted parsing when there is wrong delimiter or row delimiter #86


  • sync: support objname


  • sync: please older versions of node.js
  • sync: new sample


  • sync: new module
  • removed global variable record on stream.js example #70


  • api: accept buffer with 3 arguments #57
  • package: latest dependencies
  • spectrum: bypass regression test


  • auto_parse: work on all fields, rename to β€œis_*”
  • auto_parse: simplify test