Lamb [logo]

A lightweight, and docile, JavaScript (ES5) library to help embracing functional programming.

Changelog

  • v0.59.2 - 2020/07/17

    • Fully compatible with version 0.59.0
    • Updated "exports" property in package.json to address the issue where some tools couldn't access the manifest file. See https://github.com/nodejs/node/issues/33460.
    • Got rid of ES5 in all examples
  • v0.59.0 - 2020/07/07

    • Sorry for all the renaming, but I'm in the process of freezing the API and wanted to tackle some inconsistencies in naming choices.
    • Updated to support Node.js ES modules (and renamed ES modules build to lamb.mjs)
    • Added split and splitBy
    • API change: renamed pick to pickIn and pickKeys to pick
    • API change: renamed skip to skipIn and skipKeys to skip
    • API change: renamed rename to renameIn and renameKeys to rename
    • API change: renamed pluck to pluckFrom and pluckKey to pluck
    • API change: renamed case to casus to avoid confusion and clashing with the switch statement's case
    • API change: renamed invoker and invokerOn to invoke and invokeOn
    • Fixed .DS_STORE file leaking again in the dist folder
  • v0.58.0 - 2019/06/18

    • Added one file ES modules build
    • API change: invoker now accepts an array of bound arguments
    • API change: benched immutable for the moment being
    • Added join and joinWith
    • Added findLast, findLastWhere, findLastIndex, findLastIndexWhere
    • Added dropLastWhile and takeLastWhile
    • Switched from uglify-js to terser
    • Updated docs, linting and tests
  • v0.57.0 - 2019/02/12

    • Splitted the library into ES modules
    • API change: sort, sortWith and sortedInsert now accept an array of sorters
    • API change: removed @@lamb/placeholder property as now the placeholder is exported as __
    • Switched to Jest as a test suite
  • v0.56.0 - 2018/07/15

    • API change: compose, intersection, merge, mergeOwn, union and zip are now binary functions, and so are functions built with unionBy.
    • API change: adapter, allOf, anyOf, collect and pipe now accept an array of functions
    • Updated doc comments and tests
  • v0.55.0 - 2018/03/21

    • Fully compatible with versions down to 0.53.x
    • Added rotate and rotateBy
    • Updated link to jsDelivr
    • Fixed and updated doc comments and tests
  • v0.54.1 - 2018/03/09

    • Fixed: setPath and updatePath weren't returning unary functions, and further arguments would have overwritten the previous ones
    • Updated doc comments
    • Updated linting rules
  • v0.54.0 - 2017/08/01

    • Added mapValues and mapValuesWith
    • Added "@since" tags to doc comments
    • Added linting for tests
  • v0.53.1 - 2017/04/06

    • Fixed: hasKeyValue was returning true for any existent property when searching for an undefined value
    • Updated object checking tests
  • v0.53.0 - 2017/03/30

    • API change: unfilled placeholders in functions built with asPartial now assume an undefined value
    • API change: range now converts to number its parameters and will return an empty array if the specified range is invalid
    • API change: difference is now a binary function and returns a result without duplicates
    • Changed the name of the property holding the library's version
    • Added the possibility to use custom placeholders in partial application
  • v0.52.0 - 2017/03/17

    • API change: partial is no longer variadic and accepts a function and an array of arguments instead
    • API change: getArgAt and all array accessors now convert their index parameter to integer
    • API change: reverted change made in v0.50.0 about compose and pipe: now they return again the identity function if called without arguments
    • API change: merge and mergeOwn now throw for nil values and convert to object everything else as before
    • API change: intersection now return an empty array if called without parameters
    • Fixed: transpose and zip now correctly throw when nil values, preceded by empty array-likes, are encountered
    • Added partialRight
    • difference and intersection are now correctly documented to work with array-like objects
    • Updated test and moved shared variables to an external file
  • v0.51.0 - 2017/02/20

    • API change: removed the iteratee parameter from uniques
    • API change: removed fromIndex parameter from contains and isIn
    • API change: tapArgs isn't variadic anymore and accepts an array of "tappers" as the second parameter
    • API change: renamed drop and take to dropFrom and takeFrom
    • API change: renamed dropN and takeN to drop and take
    • API change: the falseFn parameter of condition is no longer optional
    • Added case to quickly build cases for adapter
    • Added unionBy and uniquesBy
  • v0.50.0 - 2017/02/08

    • API change: renamed is to areSame and isSVZ to areSVZ. The old names are now used for curried version of those functions
    • API change: removed isNot
    • API change: renamed isGT, isGTE, isLT and isLTE to gt, gte, lt, lte. The old names are now used for right curried versions of these functions.
    • API change: compose and pipe now build a function throwing an exception if they are called without arguments
    • API change: renamed add to sum. add is now used as a curried version of sum.
    • Added deduct as a right curried version of subtract
    • Added multiplyBy as a curried version of multiply
    • Added divideBy as a right curried version of divide
    • Added optimized currying for functions with arity 2 and 3
    • Performance improvement for compose and pipe
  • v0.49.0 - 2017/01/24

    • API change: removed optional context parameter in every function that was using it
    • API change: aritize now will simply convert its arity parameter to integer, instead of giving it a special meaning when is undefined
    • Fixed: skip and skipKeys now convert to string every value in the blacklist
    • Fixed: hasKeyValue now correctly returns false when searching for an undefined value in a non-existent property
    • Fixed: pathExists, pathExistsIn and hasPathValue will no longer see valid paths when a negative array index is out of bounds
    • Minor performance improvements for pick, pickIf, skip and skipIf
    • Added tests with sparse arrays where needed and updated existing ones with misleading texts / specs
    • Tidied up test code a bit by grouping some common variables
    • Updated tests for hasPathValue and "pick" and "skip" functions
    • Updated tests of updatePath to check negative array indexes that are out of bounds
  • v0.48.0 - 2017/01/10

    • API change: slice isn't a generic anymore to ensure that dense arrays are returned and has no optional parameters
    • Fixed: pull and pullFrom now consider nils received as the values parameter as empty arrays
    • Added sliceAt
    • All array functions always return dense arrays now
    • Updated tests
  • v0.47.0 - 2016/12/16

    • API change: renamed apply to application
    • API change: renamed applyArgs to applyTo
    • API change: clamp now converts to number its arguments and returns NaN if min is greater than max
    • API change: removed wrap
    • Re-added apply as a left-curried version of application
    • Added clampWithin and isInstanceOf
    • Updated tests and doc comments
  • v0.46.0 - 2016/12/07

    • Fully compatible with versions down to 0.44.x
    • Added isFinite, isInteger, isSafeInteger
    • Code clean-up and minor performance improvements in sorting functions
    • First step in improving the documentation site
  • v0.45.0 - 2016/11/14

    • Fully compatible with versions down to 0.44.x
    • Added pull and pullFrom
    • Added keySatisfies and pathSatisfies
    • Updated examples and doc comments
  • v0.44.0 - 2016/11/08

    • API change: repeat and testWith now throw an exception when the source string is nil and convert to string every other value
    • API change: repeat now floors the value received as the times parameter instead of ceiling it
    • API change: the char parameter of the padding functions isn't optional anymore and will be coerced to string
    • Fixed: predicates built with testWith are now safe to reuse even when the global flag is used in the pattern
    • Added append and appendTo
    • Updated tests of all string functions
  • v0.43.0 - 2016/11/03

    • Fully compatible with versions down to 0.40.x
    • Added pathExists and pathExistsIn
    • Improved performance of setIn, setKey, updateIn and updateKey
    • Improved performance of setPath, setPathIn, updatePath and updatePathIn
  • v0.42.0 - 2016/10/25

    • Fully compatible with versions down to 0.40.x
    • Added unless and when
    • Improved performance of condition
  • v0.41.0 - 2016/09/08

    • Fully compatible with versions down to 0.40.x
    • Added findWhere, findIndexWhere, hasPathValue
    • find now uses findIndex to perform the search to avoid duplicate code
    • Minor performance gain when aritize needs to add undefined arguments
  • v0.40.0 - 2016/09/02

    • API change: hasKeyValue now uses the “SameValueZero" comparison
    • Fixed: updatePath and updatePathIn treated unassigned positive indexes in sparse arrays as non existent properties
    • Updated tests for hasKeyValue
    • Updated tests for “pick” and “skip” functions
    • Updated tests for “pairs”, “tear” and “values” functions
    • Updated tests of array accessors
    • Updated tests of object and path accessors
    • Improved performance of hasKeyValue
  • v0.39.0 - 2016/08/26

    • Fully compatible with versions down to 0.37.x
    • Added every, everyIn, some, someIn
    • Updated tests for functions using predicates
    • Made intersection use everyIn instead of the native method
    • Updated doc comments, examples and tests for uniques
    • Minor performance improvement of uniques
  • v0.38.0 - 2016/08/19

    • Fully compatible with versions down to 0.37.x
    • Improved performance of flatMap, flatMapWith, flatten and shallowFlatten
    • Greatly improved performance of all grouping functions
    • Greatly improved performance of transpose, improved performance of zip as a consequence
    • Greatly improved performance of getArgAt
  • v0.37.0 - 2016/08/10

    • API change: sortedInsert now returns an array copy of the given array-like if there is no element to insert, though still accepts undefined values if they are passed explicitly
    • Greatly improved performance of all curry (and curried) functions
    • Optimized invoker and invokerOn
    • Minor performance improvements in the usage of the arguments object
  • v0.36.0 - 2016/08/04

    • Fully compatible with versions down to 0.34.x
    • Added asPartial
  • v0.35.0 - 2016/07/29

    • Fully compatible with versions down to 0.34.x
    • Added collect, pickKeys and skipKeys
    • Updated the examples of anyOf and clamp
  • v0.34.0 - 2016/07/19

    • API change: filter, forEach, map, reduce and reduceRight aren’t array generics anymore and have been replaced with performant custom implementations as JS engines didn’t get any better. Unlike native methods, these custom implementations won’t skip unassigned or deleted indexes in arrays.
    • Overall performance improvements (other than the ones caused by the aforementioned custom implementations) and some code clean-up
  • v0.33.0 - 2016/07/08

    • API change: sortedInsert now accepts array-like objects
    • Completed "fifth round" of test updating
  • v0.32.0 - 2016/07/01

    • API change: take and takeN now convert undefined values passed as n to Number (zero) before calling slice
    • API change: tapArgs, updateAt and updateIndex are now more strict about their function parameter as “falsy” values failed to throw an exception before
    • API change: curry functions now let empty calls consume the arity
    • Completed “fourth round" of test updating
  • v0.31.0 - 2016/06/24

    • API change: all path functions and object setters now throw a TypeError nil values received as source, other values will be converted to Object
    • API change: setPath, setPathIn now convert to string the path parameter
    • API change: the “set” and “update” path functions now give priority to existing object keys over array indexes, like the “get” path functions
    • Completed “third round" of test updating
  • v0.30.0 - 2016/06/21

    • API change: aritize now adds undefined arguments if the desired arity is greater than the amount of received parameters
    • API change: apply and applyArgs now treat non-array-like values for the args parameter as empty arrays
    • API change: allOf, anyOf, apply, applyArgs, aritize, binary and unary now keep the functions' context
    • Completed “second round" of test updating
  • v0.29.0 - 2016/06/16

    • API change: pick, pickIf, skip and skipIf now throw exceptions only for nil values in the data argument, other values will be converted to Object
    • API change: pick now throws exceptions only for nil values in the whitelist parameter, other values will be treated as empty arrays
    • API change: skip now throws exceptions only for nil values in the blacklist parameter, other values will be treated as empty arrays
    • API change: not now correctly keeps the predicate’s context
  • v0.28.0 - 2016/06/03

    • API change: difference now accepts array-like objects
    • API change: String padding functions now convert to string non-nil sources before using them
    • API change: String padding functions won’t throw errors for nil values passed as padding chars and use the default value instead
    • API change: flatten and shallowFlatten now throw an exception only for nil values, converts array-likes to arrays and treat every other value as an empty array
    • API change: difference now throws an exception only for nil values passed as the main parameter; other unexpected values will be treated as empty arrays
    • API change: difference parameters but than the main one will be treated as an empty array if they aren’t array-like
    • API change: fromPairs now throw exceptions only for nil values, other unexpected values will be treated as empty arrays
    • API change: has and hasKey now throw exceptions only for nil values, other unexpected values will be converted to Object
    • Completed "first round" of test updating
  • v0.27.0 - 2016/05/23

    • API change: renamed insert to sortedInsert
    • Added insert, insertAt, reduceWith and reduceRightWith
  • v0.26.0 - 2016/05/16

    • Fully compatible with versions down to 0.25.x
    • Added rename, renameKeys and renameWith
  • v0.25.1 - 2016/05/10

    • API change: enumerables, pairs, tear and values now throw a TypeError if supplied with null or undefined
    • API change: ownPairs, ownValues and tearOwn now throw a TypeError only if supplied with null or undefined regardless of the ECMAScript engine you are using
    • Added keys as a shim of ES6’s Object.keys
  • v0.24.0 - 2016/05/05

    • API change: setPath and setPathIn now treat non-enumerable properties encountered in a path as non-existent properties
    • Added updatePath and updatePathIn
  • v0.23.0 - 2016/04/27

    • API change: getPath and getPathIn now support negative indexes
    • API change: The function returned by getAt now throw exceptions only if called with null or undefined and returns undefined for any other non-array-like object
    • Added getIndex, setIndex and updateIndex
  • v0.22.0 - 2016/04/19

    • Fully compatible with versions down to 0.21.x
    • Added updateIn, updateKey and updateAt
  • v0.21.0 - 2016/04/13

    • API change: getPathIn and getPath now return undefined for any non existent path, instead of throwing exceptions when an undefined value was a part of the path instead of being its target
    • API change: renamed sequence to generate to avoid confusion with other languages, concepts and libraries
    • Added count, countBy, index, indexBy
  • v0.20.0 - 2016/04/08

    • API change: The mergeOwn function now converts null and undefined values to empty objects instead of throwing exceptions
    • Added setPath and setPathIn
  • v0.19.0 - 2016/04/05

    • API change: renamed getWithPath to getPathIn
    • Added getPath and reverse
  • v0.18.0 - 2016/04/01

    • API change: renamed get to getIn
    • Added setIn and setKey
  • v0.17.0 - 2016/03/29

    • Minor API change (shouldn't affect anyone): changed integer conversions in isIn, transpose and currying functions
    • API change: getAt no longer accepts strings as indexes
    • Added getArgAt and setAt
  • v0.16.0 - 2016/03/23

    • Fully compatible with versions down to 0.15.x
    • Added init, tail, getAt, head, last
  • v0.15.3 - 2016/03/21

    • Fully compatible with versions down to 0.15.x
    • Updated generic function and removed unused Function.prototype caching
    • Added specific tests for generic, sorter and sorterDesc
    • Minor improvements in documentation
  • v0.15.2 - 2016/03/17

    • Fully compatible with versions down to 0.15.x
    • Added support for Travis CI and Coveralls
    • Updated README and fixed typo in documentation
  • v0.15.1 - 2016/03/08

    • Fully compatible with version 0.15.0
    • Minor performance improvements
  • v0.15.0 - 2016/03/03

    • API change: changed insert and sorter
    • Added invokerOn, sort, sorterDesc and sortWith
  • v0.14.0 - 2015/05/13

    • Fully compatible with versions down to 0.13.x
    • Added transpose, zip, zipWithIndex
  • v0.13.0 - 2015/05/06

    • API change: difference, intersection and uniques now use the "SameValueZero" comparison
    • Added clamp, contains, isIn, isSVZ
  • v0.12.0 - 2015/04/22

    • Fully compatible with versions down to 0.9.x
    • Added enumerables and pluckKey
    • Added mergeOwn, ownPairs, ownValues and tearOwn
  • v0.11.0 - 2015/04/17

    • Fully compatible with versions down to 0.9.x
    • The union function now can work with array-like objects
    • Added flatMapWith, partition, partitionWith
  • v0.10.0 - 2015/04/15

    • Fully compatible with version 0.9.x
    • Added merge function
    • Added binary and unary as shortcuts for common use cases of aritize
  • v0.9.0 - 2015/04/10

    • API change: dropped the boolean parameter in flatten and added shallowFlatten
    • API change: dropped the boolean parameter in curry and curryable, added curryRight and curryableRight
    • API change: renamed typeOf to type to avoid confusion with the operator
    • Added the filterWith function
  • v0.8.0 - 2015/04/03

    • API change: the values function now picks from all enumerable properties, even inherited
    • API change: renamed getFromPath to getWithPath
    • Added fromPairs, immutable, make, pairs, tear
  • v0.7.0 - 2015/03/25

    • Fully compatible with previous 0.x versions
    • Added the group and groupBy functions
    • Added the find and findIndex functions
    • Some long due performance improvements on curry, curryable and partial
  • v0.6.3 - 2015/03/20

    • The documentation is now online
    • Minor fixes in doc comments
  • v0.6.2 - 2015/03/18

    • First public release