2.10.0 (2019-02-05)

This release introduces support for the three most recent editions of
JavaScript: ES7, ES8, and ES9. Users can enable support for any one of these
via the esversion linting option.

Perhaps most notably, this includes "async functions." Since their
standardization in ES2017, no feature has been more requested. We're happy to
add support for this powerful new language feature. If the delay is any
indication, extending JSHint's parser was no small task, and we were able to
make many seemingly-unrelated corrections along the way.

That progress is easiest to see in JSHint's performance on Test262 (the
official test suite for the JavaScript programming language). Version 2.9.6
passed 84% of those tests. Version 2.10.0 passes 96%. We're excited to push
that number higher, especially considering that new language features and new
tests are being added every day. If you're curious about what needs to be done,
we maintain an "expectations file" describing every test JSHint is known to
fail today.

This release also includes brand-new parsing logic for classes. We thank Ethan
Dorta and Alex Kritchevsky, the two first-time contributors who made this
possible!

Bug Fixes

• Accept new RegExp flag introduced by ES6 (26b9e53)
• Add global variables introduced in ES2017 (aded551)
• Add globals for EventTarget interface (b78083a)
• Add globals for WindowOrWorkerGlobalScope (e0aac94)
• Allow YieldExpression as computed property (40dca82)
• Correct implementation of spread/rest (bd0ae0d)
• Correct invalid function invocation (cda02ae)
• Correct parsing of let token (030d6b4)
• Correct parsing of arrow function (8fa6e39)
• Correct parsing of InExpression (06f54d0)
• Disallow dups in non-simple parameter list (4a5a4a5)
• Disallow fn declarations in stmt positions (a0e0305)
• Disallow YieldExpression in gnrtr params (17ca4e4)
• Enforce UniqueFormalParameters for methods (280d36b)
• Honor globals config in JavaScript API (0278731)
• Report invalid syntax as error (5ca8b1a)
• Update parsing of object "rest" property (58967ea)

Features

• Enable object rest/spread via esversion (3fc9c19)
• Enforce ES2016 restriction on USD (2c2025b)
• Implement noreturnawait (70ab03d)
• Implement regexpu option (962dced)
• Implement ES2019 RegExp "dotall" (457d732)
• Implement support for async iteration (1af5930)
• Implement support for ES8 trailing commas (29cab1f)
• Implement support for object spread/rest (35e1b17)
• Introduce exponentiation operator (21b8731)
• Introduce linting option leanswitch (1f008f2)
• Introduce support for async functions (bc4ae9f)

The new version differs by 51 commits.

• b7faa24 v2.10.0
• 6417978 Merge branch 'v2.10.0'
• f80e049 [[CHORE]] Reorder parameters of internal function
• 90904ce [[DOCS]] Document new esversion values
• aded551 [[FIX]] Add global variables introduced in ES2017
• 457d732 [[FEAT]] Implement ES2019 RegExp "dotall"
• 962dced [[FEAT]] Implement regexpu option
• 1af5930 [[FEAT]] Implement support for async iteration
• 70ab03d [[FEAT]] Implement noreturnawait
• bc4ae9f [[FEAT]] Introduce support for async functions
• e0aac94 [[FIX]] Add globals for WindowOrWorkerGlobalScope
• b78083a [[FIX]] Add globals for EventTarget interface
• 40dca82 [[FIX]] Allow YieldExpression as computed property
• 17ca4e4 [[FIX]] Disallow YieldExpression in gnrtr params
• 3fc9c19 [[FEAT]] Enable object rest/spread via esversion

There are 51 commits in total.

See the full diff

2.10.1 (2019-02-05)

Bug Fixes

• Do not add cls method names to env. record (036f085)

The new version differs by 2 commits.

• 0e85de5 v2.10.1
• 036f085 [[FIX]] Do not add cls method names to env. record

See the full diff

2.10.2 (2019-03-13)

Bug Fixes

• Allow built-in method names in classes (b0c224b)
• Correct parsing of exported async fns (64b9dce)
• Correct parsing of RegExp character sets (668c4a3)
• Init block bindings in C-style for loop (404c9a0)
• Require const intlzr in C-style for loop (307e9fc)
• Track FutureReservedWords as idnts in ES5+ (d697ff4)
• Warn on reassignment of async functions (14384d3)

The new version differs by 10 commits.

• 07ff25d v2.10.2
• 307e9fc [[FIX]] Require const intlzr in C-style for loop
• 404c9a0 [[FIX]] Init block bindings in C-style for loop
• 8d71df8 [[CHORE]] Update Test262
• 64b9dce [[FIX]] Correct parsing of exported async fns
• d73467a [[CHORE]] Update dependency to fix vulnerability
• d697ff4 [[FIX]] Track FutureReservedWords as idnts in ES5+
• 14384d3 [[FIX]] Warn on reassignment of async functions
• b0c224b [[FIX]] Allow built-in method names in classes
• 668c4a3 [[FIX]] Correct parsing of RegExp character sets

See the full diff

2.10.3 (2019-11-04)

Bug Fixes

• Allow more escapes with RegExp u flag (5ac5c46)
• Correct binding power of AwaitExpression (af04b1e)
• Correct interpretation of commas (691dbdc)
• Correct restrictions on class method names (f670aeb)
• Correctly interpret class method names (82b49c4)
• Do not crash on invalid program code (b14acca)
• Interpret "object rest" ident as a binding (c0e9a5b)
• Relax singleGroups for async functions (c5dcd90)
• Tolerate static as class method name (9cb3b20)
• Tolerate valid assignments (0a60c9e)
• Validate lone arrow function parameter (38285cd)

The new version differs by 36 commits.

• c43f4ad v2.10.3
• 38285cd [[FIX]] Validate lone arrow function parameter
• 691dbdc [[FIX]] Correct interpretation of commas
• e63dbc7 [[CHORE]] Revert parser improvements
• d72ce61 [[CHORE]] Improve test coverage for logical NOT
• d015657 [[CHORE]] Remove unused internal variable
• c81bf3a [[CHORE]] Improve CI configuration (#3415)
• 5a337a8 [[CHORE]] Optimize case clause tracking
• 9cb3b20 [[FIX]] Tolerate static as class method name
• b14acca [[FIX]] Do not crash on invalid program code
• 2366c92 [[CHORE]] Improve test coverage for RegExp parsing
• 5ac5c46 [[FIX]] Allow more escapes with RegExp u flag
• 0a60c9e [[FIX]] Tolerate valid assignments
• e04746b [[TEST]] Ignore "information" messages
• a70304d [[TEST]] Do not interpret warning as error

There are 36 commits in total.

See the full diff