CHANGELOG.md

buble changelog

0.20.0 (2020-03-26)

• This is the last Buble version to work on Node v4 & v6. Going forward, support for old Node versions that reached End-of-Life will not be actively maintained. #250
• Fix recognition of catch-declared variables (#237)
• Prevent labels from being renamed due to let/const transpilation. (#236)
• Fix scoping of variables declared in for loops. (#233)
• Fix an error when transpiling for (a[0] in b). (#232)
• Fix an error when transpiling for with an empty init. (#226)
• Fix let/const transpilation when combined with shorthand properties. (#229)
• Fix JSX not respecting advanced white space characters. (#218)
• Fix name collision when transpiling A = class extends A {}. (#209)
• Fix os-homedir dependency warnings on install. (#207)
• Upgrade dependencies to their latest patch versions, fixing security audit warnings. (#250)

0.19.8 (2019-07-03)

• Allow shebang (#191)
• Fix tagged template literal in certain cases (#190)
• Fix removing of trailing commas in certain cases (#194)
• Make JSX Fragment configurable (#198)
• Fix transpiling string-keyed properties with whitespaces before colons (#200)

0.19.7 (2019-03-11)

• Throw error on dynamic import expression if transform is not disabled
• Throw error on async and await if transform is not disabled
• Allow await outside of functions
• Don't bundle acorn dependencies (#165)
• Inline spread elements where possible (#179)
• Correctly handle operator precedence for array spread (#177)
• Correctly pass-through async arrow functions and methods (#109, #146)
• Move repository to https://github.com/bublejs/buble
• Exclude non-string keys from rest properties (#149)

0.19.6 (2018-10-23)

• Fix class expressions with heritage in arrow functions (#150)
• Support objectAssign: true in API as a short-hand for objectAssign: "Object.assign"
• Bundle all acorn dependencies (for now), but no others (#159)

0.19.5 (2018-10-16)

• Transpile U+2028 and U+2029 according to stage 4 proposal json-superset
• Add /*@__PURE__*/ annotations to transpiled classes
• Update support data
• Allow disabling spread properties transpiling
• Fix specific edge case with spread and computed properties (#139)
• Allow global return statements
• Don't create unnecessary this aliases with loops (#120)
• Don't allow getters and setters if IE8 is transpile target (#20)

0.19.4 (2018-10-06)

• Fix transpiling destructuring assignments in brace-less if statement's bodies (#152)
• Fix transpiling const and let after brace-less if statements (#132)
• Transpile binary and octal number literals if base prefix is upper-case (#74)
• Mark classes as supported in Chrome 48
• Mark destructuring of arrow function arguments as not supported in Firefox < 52

0.19.3 (2018-02-13)

• Make sure browser builds are actually valid ES5 (except for the modules build)

0.19.2 (2018-02-12)

• Correctly specify browser field in package.json (#107)
• Fix a compile error about using super outside of class methods
• Fix transpiling rest properties

0.19.1 (2018-02-10)

• Fix transpiling let and const if arrow functions are not transpiled (i. e. node: 4)

0.19.0 (2018-02-10)

Enhancements

• Add support information for new environments
• Add (pass-thru) support for async generators and for-async-of
• Add support for dynamic import (#102)
• Add support for JSX fragments (#62)
• Add unpkg build and transpile browser build for older environments (#93)
• Reuse tagged template quasis (#67)
• Transpile trailing commas in new expressions (#63)
• Add support for destructuring in for-in and for-of loop heads
• Add support for destructuring in catch clause params
• Add support for rest properties in assignments

Fixes

• Don't remove commas in comments after the last argument (#89)
• Support transformations involving aliasing of variables in block scopes (#60)
• Evaluate expression only once with inline default pattern elements
• Fix nested object and array patterns, rest properties and default values in for loop heads
• Only put own properties in rest properties
• Improve declaration of helper variables
• Allow modification of mutable variables that shadow a const before declaration (#59)
• Correctly detect modification of immutable variables through destructuring assignments
• In object methods, support destructuring declarations initialized with a variable having the same name as the method (#86)
• Fix properties with string literal keys after computed properties (#91)
• Fix methods after computed properties (#101)
• Fix short-hand generator methods
• Fix template literals in array after spread element (#105)
• Fix arrow functions in array after spread element (#100)
• Fix arrow functions in new expression after spread element (#100)
• Restore decoding HTML entities in JSX (#104)
• Correct various entries in support matrix

0.18.0

• Allow anonymous functions and classes as default exports (#37)
• Handle non-breaking spaces in JSX (#46)
• Allow anonymous classes to be assigned to properties (#33)
• Add trailingFunctionCommas transformation (#50)

0.17.3

• Move chalk to dependencies (#35)

0.17.2

• Fix nested template literals regression (#39)

0.17.1

• Error on nested rest elements (#31)
• Allow destructuring with computed properties (#34)

0.17.0

• Update dependencies
• Transpile arrow functions unconditionally if spread arguments need transpilation (#22)
• Better object spread support (#25)
• Rest properties (#30)
• Fix (#24)

0.16.0

• Allow truthy dash-cased props (#2)
• Make class accessors configurable (#3)
• Support JSX pragma comments (#5)
• Handle JSX with no spaces between attributes (#6)

0.15.2

• Don't create function names for object methods with namedFunctionExpressions: false
• Simplify destructuring assignment statements
• Give unique names to methods that shadow free variables (#166)

0.15.1

• Fix Object.assign regression (#163)

0.15.0

• More informative CLI errors when input comes from stdin (#155)
• Prevent PhantomJS shadowing errors (#154)
• Use local register.js in tests (#153)
• Correct CLI output filename with .jsx input (#151)
• Fix whitespace removal bug (#159)
• Allow computed properties in object destructuring (#146)
• Support rest elements in array destructuring (#147)
• Fix array swap assignment expression (#148)
• Allow template string as destructuring default (#145)
• Support multiple returning loops with block scoping (cbc17ad5e)
• Fix super with spread arguments (#129)
• Arrow function returning computed property (#126)
• Allow computed property and object spread to coexist (#144)
• Add namedFunctionExpressions option to prevent scope leak in old browsers (#130)
• Fix exponentiation assignment edge case (#122)
• Allow CLI --output flag to work with stdin input

0.14.3

• Prevent crashing on Node versions more recent than the latest 'supported' version (#102)

0.14.2

• Allow .jsx file extension (#127)
• Handle trailing comma in spread operator (#133)
• Allow empty code blocks in JSX (#131)
• Allow computed shorthand function name with spread in body (#135)
• Add --objectAssign CLI option (#113)
• Allow numeric literals as shorthand method keys (#139)

0.14.1

• fix initialization of block-scoped variables in for-of and for-in loops (#124)

0.14.0

• Always wrap block-less bodies in curlies (#110, #117, !80)
• Make sure block-scoped variables in loops have an initializer (#124)
• Destructuring assignments (!82)
• Support string literals in object destructuring (!81)
• Standalone arrow function expression statements (!79)

0.13.2

• Fix spread operator when used with new and this (#104, #115)

0.13.1

• Handle destructuring in for/for-of loop heads (#95)
• Allow early return (without value) from loops (#103, #105)

0.13.0

• Require an objectAssign option to be specified if using object spread operator (#93)
• Fix spread operator with expression method calls and template strings (!74)

0.12.5

• Prevent reserved words being used as identifiers (#86)
• Use correct this when transpiling super inside arrow function (#89)
• Handle body-less for-of loops (#80)

0.12.4

• Allow references to precede declaration (inside function) in block scoping (#87)

0.12.3

• Argh, npm

0.12.2

• Files missing in 0.12.1 (???)

0.12.1

• Don't require space before parens of shorthand computed method (#82)
• Allow string keys for shorthand methods (#82)

0.12.0

• Support u flag in regular expression literals (!62)
• Save buble/register transformations to $HOME/.buble-cache (!63)

0.11.6

• Allow shorthand methods with computed names (#78)
• Include code snippet in error.toString() (#79)

0.11.5

• Preserve whitespace between JSX tags on single line (#65)

0.11.4

• Allow computed class methods, except accessors (!56)
• Compound destructuring (!58)

0.11.3

• Ensure inserted statements follow use strict pragma (#72)

0.11.2

• Ensure closing parenthesis is in correct place when transpiling inline computed property object expressions (#73)

0.11.1

• Fix computed property followed by non-computed property in inline expression

0.11.0

• Computed properties (#67)
• Allow super(...) to use rest arguments (#69)

0.10.7

• Allow customisation of Object.assign (used in object spread) (!51)

0.10.6

• Handle sparse arrays (#62)
• Handle spread expressions in JSX (#64)

0.10.5

• Create intermediate directories when transforming via CLI (#63)
• Update README (#57)

0.10.4

• Support spread operator in object literals (!45) and JSX elements (!46)

0.10.3

• Disable intelligent destructuring, temporarily (#53)
• Fix whitespace in JSX literals (!39)
• Add : true to value-less JSX attributes (!40)
• Quote invalid attribute names (!41)

0.10.2

• Don't add closing quote to JSX component without attributes (#58)

0.10.1

• Fix handling of literals inside JSX

0.10.0

• Basic JSX support

0.9.3

• Better spread operator support, including with arguments (#40)
• Fix indentation of inserted statements in class constructors (#39)

0.9.2

• Allow class to have accessors and no constructor (#48)
• Fix help message in CLI

0.9.1

• Prevent confusion over Literal node keys

0.9.0

• More complete and robust destructuring support (#37, #43)
• Correct this/arguments references inside for-of loop

0.8.5

• Allow destructured parameter to have default (#43)
• Allow continue/break statements inside a for-of loop

0.8.4

• Allow class body to follow ID/superclass without whitespace (#46)

0.8.3

• Performance enhancements (!23)

0.8.2

• More robust version of (!22)

0.8.1

• Fix export default class A extends B (broken in 0.8.0) (!22)

0.8.0

• Subclasses inherit static methods (#33)
• Performance enhancements (!21)

0.7.1

• Prevent omission of closing paren in template string (#42)
• Separate variable declarations for each name in destructured declaration (#18)

0.7.0

• Allow arrow functions to be used as default parameter values (#36)

0.6.7

• Support static get and set in classes (#34)
• Support spread operator in expression method call (!14)
• Fix for-of loops with no space after opening paren (#35)

0.6.6

• Fix another subclass super() bug (#32)

0.6.5

• Fix super() call in subclass expression (#32)
• Less defensive template string parenthesising (!9)

0.6.4

• Add Node 6 to support matrix

0.6.3

• Handle empty template strings (#28)

0.6.2

• Handle body-less do-while blocks (#27)

0.6.1

• Always remember to close parens in template strings

0.6.0

• Strip unnecessary empty strings from template literals
• Intelligent destructuring for object patterns in parameters (#17)

0.5.8

• Fix exponentiation assignment operator edge case

0.5.7

• Exponentiation operator support (#24)
• More informative error messages for for-of and tagged template strings

0.5.6

• Add dangerousTaggedTemplateString (!2) and dangerousForOf (!3) transforms
• Prevent deindentation causing errors with removed whitespace in class methods
• Use correct identifier with default destructured function parameters (#23)

0.5.5

• Ensure return is in correct place when creating bodies for arrow functions (#21)
• Prevent deindentation of class methods causing breakage with destructuring statements (#22)

0.5.4

• Install missing chalk dependency
• Informative error messages when buble/register fails

0.5.3

• Add register.js to package. Yes I'm an idiot

0.5.2

• Add buble/register for use with e.g. Mocha

0.5.1

• Remove unused dependency

0.5.0

• Support --target, --yes and --no in CLI
• Compile entire directory of files via CLI
• Sourcemap support in CLI
• All transforms can be disabled (or errors suppressed) with the transforms option (or --yes and --no, in the CLI)
• import and export will throw an error unless --no modules transform is specified
• Fix bug with destructuring
• Fix bug with block scoping and loops

0.4.24

• Throw if let/const is redeclared, or var is redeclared with a let/const (0.4.22 regression)

0.4.23

• Add buble.VERSION
• Tidy up build process (don't bundle Acorn incorrectly)

0.4.22

• Allow double var declarations (only throw if let or const is redeclared)

0.4.21

• Add find and findIndex helpers for 0.12 support

0.4.20

• Bump to resolve unknown npm issue

0.4.19

• Fix block scoping bug with for loops that don't need to be rewritten as functions

0.4.18

• Fix break-inside-switch bug

0.4.17

• Support for...in loops and block scoping

0.4.16

• Add ie and edge to support matrix

0.4.15

• Rewrite reserved properties if specified (#9)

0.4.14

• Allow classes to extend expressions (#15)
• Experimental (partially implemented) API for disabling transforms based on target environment or custom requirements

0.4.13

• Fix return statement bug

0.4.12

• More complete and robust transpilation of loops that need to be rewritten as functions to simulate block scoping (#11, #12, #13)

0.4.11

• Remove source-map-support from CLI (only useful during development)

0.4.10

• Basic support for spread operator

0.4.9

• Support getters and setters on subclasses
• Disallow unsupported features e.g. generators

0.4.8

• Support getters and setters on classes
• Allow identifiers to be renamed in block-scoped destructuring (#8)
• Transpile body-less arrow functions correctly (#9)

0.4.7

• Add browser version

0.4.6

• Report locations of parse/compile errors (#4)

0.4.5

• Sourcemap support

0.4.4

• Support for class expressions
• More robust deconflicting
• Various bugfixes

0.4.3

• Handle arbitrary whitespace inside template literals

0.4.2

• Fix bug-inducing typo

0.4.1

• Rest parameters

0.4.0

• Self-hosting!

0.3.4

• Class inheritance

0.3.3

• Handle quote marks in template literals

0.3.2

• Handle empty class declarations

0.3.1

• Add bin to package

0.3.0

• (Very) basic CLI
• Handle export default class ...

0.2.2

• Initialise children of Property nodes
• Prevent false positives with reference detection

0.2.1

• Add missing files

0.2.0

• Support for a bunch more ES2015 features

0.1.0

• First (experimental) release