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Change Log

v6.1.0

Thanks to our contributors!

  • Daniel Zwelling
  • Ryan Delaney

v6.0.0

This version has been marked as deprecated on NPM to encourage users to migrate to ESLint.

  • [bugfix] fix enforce-trailing-newline option in file-header rule (#4890)
  • [bugfix] avoid writing to temp files with writeFileSync on macOS 10.15 (#4887)
  • [bugfix] fix crash in completed-docs rule when tag contents are undefined (#4895)
  • [docs] fix example code of Radix rule (#4892)
  • [docs] Add missing colon after [error] in testing rules documentation (#4903)

Thanks to our contributors!

  • Ivan Sorokin
  • Tanmoy Bhowmik
  • Meng Wang
  • Jay Bhagat
  • Aman Sharma
  • Josh Goldberg

v6.0.0-beta1

No changes from v6.0.0-beta0, just re-released to correctly mark with the beta and next dist-tags on NPM.

v6.0.0-beta0

  • 🔥 BREAKING CHANGES 🔥
    • [api] Changed default formatter to stylish (#4872)
    • [enhancement] Removed formatting and whitespace rules from tslint:recommended configuration (#4871)
    • [enhancement] Removed pedantic rules from tslint:recommended configuration (#4312)
    • [enhancement] vso formatter now reports severity of rule failures (#4286)
    • [enhancement] typedef rule arrow-call-signature option is more consistent in reporting errors on lambdas and will flag more violations that were missed in the previous rule implementation (#4533)
    • [bugfix] ordered-imports is now consistent with TypeScript's Organise Imports ordering (#4064)
    • [bugfix] member-ordering now checks property accessors (getters and setters) (#3984)
  • Other changes
    • [bugfix] Removed deprecated rules from tslint:all configuration (#4862)
    • [bugfix] Preserve significant zeros in fixer for number-literal-format (#4856)
    • [bugfix] no-redundant-jsdoc allow @author tag (#4854)
    • [bugfix] RuleFailure#toJson() no longer forces rule severity to be an uppercase string (#2622)
    • [bugfixfix] return-undefined rule now works with TS 3.7 (#4866)
    • [enhancement] prefer-switch is more lenient with if statements containing multiple OR conditions without any else clause (#4873)
    • [enhancement] completed-doc: add support for constructor documentation (#4861)
    • [new-rule-option] case-insensitive-legacy for ordered-imports rule (#4064)
    • [docs] import-blacklist: add some options examples (#4858)
    • [docs] Update custom rule example to use recursive walker (#4883)

Thanks to our contributors!

  • J Rob Gant
  • Tanmoy Bhowmik
  • 谭九鼎
  • Ahmed Ghoneim
  • Josh Goldberg
  • Andrew Boyton
  • Peter Sandor
  • Vincent Langlet
  • Adrian Leonhard
  • Philipp Foedermayr
  • Brian Olore
  • andrew bernard
  • joon1030

v5.20.1

No changes from v5.20.0, just re-released to correctly mark with the latest dist-tag on NPM.

v5.20.0

  • [bugfix] fix strict-boolean-expressions false positive with "ignore-rhs" option (#4833)
  • [bugfix] fix no-unnecessary-type-assertion no error when "strict": true in compiler flags (#4841)
  • [bugfix] "ignore" option for file-name-casing rule works correctly (#4848)
  • [bugfix] fix array-type false positive for simple parenthesized types with "array-simple" option (#4844)
  • [new-rule-option] object-literal-shorthand supports {"property"?: "never", "method"?: "never"} as config options (#4842)
  • [new-rule-option]: allow-generics option for invalid-void rule (#4839)
  • [new-rule-option] check-super-calls option for unnecessary-constructor rule (#4813)
  • [chore] Upgrade diff dependency to v4.0.1 (#4845, #4852)

Thanks to our contributors!

  • Bas Bosman
  • Tanmoy Bhowmik
  • David Zulaica
  • Maxime Kjaer
  • @guidsdo
  • Pavel Birukov
  • Josh Goldberg
  • Akshaya Srivatsa

v5.19.0

Thanks to our contributors!

  • Josh Pike
  • Tanmoy Bhowmik
  • Michael Withagen
  • Evgeniy Timokhov
  • Vitalij Krotov
  • Josh Goldberg
  • Veda
  • Guido
  • Robert Fink
  • Max Sysoev

v5.18.0

Thanks to our contributors!

  • Josh Goldberg
  • smoehrle
  • Mateusz Witkowski
  • Andy Hanson
  • John Wiseheart
  • Eran Shabi
  • Tibor Blenessy
  • AndreasGassmann
  • Ryan Waskiewicz
  • Isabelle

v5.17.0

  • [bugfix] quotemark backtic option now ignores enum members, use strict declarations, lookup types, and strings containing octal escape sequences. (#4693)
  • [bugfix] no-redundant-jsdoc no longer errors on JSDocThisTag (#4690)
  • [chore] Update devDependency mocha from v3.2.0 to v6.1.4 (#4669) (#4674)
  • [chore] Update devDependency js-yaml from ^3.13.0 to ^3.13.1 (#4663)
  • [chore] Update deprecated devDependency github to @octokit/rest (#4673)
  • [chore] Update devDependency nyc from v13.3.0 to v14.1.1 (#4699)
  • [deprecation] no-use-before-declare rule for typescript >= 2.9.0 (#4695)
  • [documentation] Minor fix for variable-name rule metadata (#4731)
  • [documentation] Fixed no-unused-variable argument count (#4683)
  • [enhancement] Allow const assertions in no-object-literal-type-assertion (#4681)
  • [new-fixer] unnecessary-constructor (#4694)

Thanks to our contributors!

  • Bjorn Stromberg
  • Vitaliy Agoshkov
  • knafteN
  • Bowen Ni
  • Waseem Ahmad
  • Åsmund Grammeltvedt
  • Eric Ferreira
  • Zhen Tian
  • Tom Lakesman
  • zachkirsch

v5.16.0

  • [bugfix] Excuse more quotemark backtick edge cases and fix behavior for TS < 2.7.1 (#4642)
  • [bugfix] Fix regression in interface-name rule related to numeric characters in interface names (#4655, #4626)
  • [enhancement] Update nyc from v10.2.0 to v13.3.0 (#4633)
  • [enhancement] Migrate from deprecated babel-code-frame package to new @babel/code-frame package (#4632)
  • [enhancement] Improve error message for restrict-plus-operands rule. (#4635)
  • [enhancement] comment-format rule now whitelists //region comments generated by JetBrains IDE (#4609)
  • [enhancement] Relax no-null-undefined-union rule. (#4625)
  • [new-rule-option] allow-else-if option for unnecessary-else rule (#4599)
  • [documentation] Fix "identifer" typo in custom rules docs (#4657)
  • [documentation] Fix code example for switch-default rule (#4650)
  • [documentation] Fix documentation example for prose formatter (#4656)
  • [documentation] no-parameter-properties: fix unclear rule description (#4629)
  • [documentation] Fix typo in rule docs generation (#4638)

Thanks to our contributors!

  • Oleg Artene
  • William Neely
  • Bjorn Stromberg
  • Matthew Barry
  • Neha Rathi
  • Vincent Langlet
  • rarenal
  • Greg Jednaszewski
  • Adam Postma
  • Eric Ferreira
  • Evgeniy Timokhov
  • Martin Probst

v5.15.0

  • [api] WalkContext and AbstractWalker type parameter defaults to void (#2600)
  • [bugfix] no-void-expression now allows conditional expressions (#4606)
  • [bugfix] fix linebreak handling in ordered-imports (#4583)
  • [bugfix] fix static-this false positive for higher order components (#4580)
  • [bugfix] Fixed crash in unnecessary-else from blank if statements (#4603)
  • [bugfix] Fixed false positive in unnecessary-else after non-jumping statement (#4603)
  • [bugfix] interface-name now handles interface starting with "I18n" correctly (#4486)
  • [bugfix] no-string-throw fix inserts whitespace if not present after throw keyword (#4540)
  • [bugfix] quotemark: fix some edge cases for backtick option (#4618)
  • [bugfix] unnecessary-constructor: don't flag non-private constructors that are actually necessary (#4619)
  • [enhancement] Upgrade js-yaml to avoid security issue (#4595)
  • [new-rule-option] allow-single-line-comments option for file-header rule (#4560)
  • [new-rule-option] ignore-rest-args option for no-any rule (#4581)
  • [new-rule] no-null-undefined-union (#4589)

Thanks to our contributors!

  • Max Belsky
  • Steve Moser
  • Christian Flach
  • Roman Rogowski
  • Terry
  • Luke
  • Andy Hanson
  • Vitalij Krotov
  • Josh Goldberg
  • Vincent Langlet
  • Neha Rathi
  • Eric Ferreira

v5.14.0

  • [bugfix] backtick option for quotemark rule no longer incorrectly flags string literals that must use single/double quotes (#4535)
  • [bugfix] Fixed regression in CheckstyleFormatter backwards compatibility (#4561)
  • [bugfix] whitespace rule now lints export statements (#4554)
  • [bugfix] no-trailing-whitespace no longer flags files starting with a byte order mark (#4543)
  • [enhancement] promise-function-async now allows single statement lamda functions that delegate to another promise-returning function (#4553)
  • [enhancement] Add note to docs about zero-indexing for machine formatters (#4544)
  • [enhancement] Fix metadata of the whitespace rule (#4551)
  • [enhancement] Add junit output for files which are successfully linted (#4566)
  • [new-rule-option] underscore option for no-shadowed-variable rule to ignore shadowed underscores (#4546)
  • [new-rule-option] require-const-for-all-caps option for variable-name rule (#2936)
  • [new-rule-option] overloads option for completed-docs rule to enforce documentation of each overload signature (#4563)
  • [new-rule-option] allow-namespace-imports option for no-duplicate-imports rule (#4524)
  • [new-rule-option] allow-arguments option for no-object-literal-type-assertion rule to allow type assertions on object literals used inside call expressions (#4521)
  • [new-rule-option] allow-delete option for no-unbound-method rule (#4548)
  • [new-rule] no-tautology-expression (#4470)
  • [new-rule] static-this (#4475)
  • [new-rule] unnecessary-else (#4502)

Thanks to our contributors!

  • Roman Rogowski
  • Max Belsky
  • Edward Drapkin
  • Dominik Palo
  • Matthew McCune
  • Debsmita
  • Lucas Charles
  • Piotr Gajowniczek
  • Darren Anderson
  • Noam Yogev
  • Josh Goldberg
  • Karol Majewski

v5.13.1

  • [bugfix] Fix regression in CheckstyleFormatter backwards compatibility (#4561)

v5.13.0

  • [deprecation] Mark RuleWalker and ProgramAwareRuleWalker as deprecated (#4413)
  • [bugfix] Create output directory when the output path (specified by --out CLI flag) does not exist. (#4507)
  • [bugfix] Explicit disabling of rules is now copied over to jsRules when using jsRules: true (#4517)
  • [bugfix] unknown is recognized as simple type in array-type (#4433)
  • [bugfix] ban: Fix a false positive which would occur when banning method calls nested inside objects. Previously, banning ["a", "b", "c"] would trigger lint failures on the syntax b.c(), which was not the intent of this rule. (#4383)
  • [bugfix] Fixed single-line comment parsing for completed-docs (#3557)
  • [bugfix] trailing-comma no longer crashes if it cannot find the closing parenthesis of a function declaration (#4457)
  • [bugfix] no-unsafe-any: allow implicitly downcasting any to unknown (#4442)
  • [bugfix] Add grouped-imports to tslint:all (#4420)
  • [docs] Fix docs typo (#4395)
  • [enhancement] Add "formatting" rule category (#2832)
  • [enhancement] ordered-imports now supports a groups option to provide custom grouping rules. (#4134)
  • [enhancement] Convert completed-docs to an untyped rule (#3557)
  • [enhancement] Checkstyle formatter includes every file linted regardless of lint errors. (#3838)
  • [enhancement] Formatters now receive the full list of of linted file paths as a third argument. (#3838)
  • [enhancement] array-type rule handles Typescript 3.0's unknown type properly (#4219)
  • [enhancement] import-blacklist now supports regular expression patterns for blacklisting (#3504)
  • [new-rule] no-restricted-globals (#3824)
  • [new-fixer] added fixer for newline-before-return rule (#4482)
  • [new-fixer] number-literal-format now includes auto fix (#4496)
  • [new-rule-option] Added whitelist option to no-unbound-method (#4472)
  • [new-rule-option] Added jsx-ignore option to no-magic-numbers rule (#4460)
  • [new-rule-option]: object-literal-sort-keys: Add match-declaration-order-only option (#3748)
  • [new-rule-option] strict-boolean-expressions accepts ignore-rhs option to disable checking the right-hand side of the && and || operators as strictly boolean. (#4159)

Thanks to our contributors!

  • Enes SOYLU
  • jbsingh
  • Sven Efftinge
  • James C. Davis
  • Norio Suzuki
  • Thomas den Hollander
  • Retsam
  • Dobes Vandermeer
  • Young Min Kim
  • Grant Wu
  • Felix Schindler
  • Lydia
  • Adrian Leonhard
  • James Jensen
  • Athene Noctua
  • Allen
  • Vincent Langlet
  • Paul Medynski
  • Liz
  • Piotr Gajowniczek
  • Max Sysoev
  • Jakub Beneš
  • Ian Mobley
  • 周昊宇
  • Nazanin Delam
  • Matt R. Wilson
  • Andy Hanson
  • Zen
  • Josh Goldberg
  • Jeff Lau

v5.12.1

🛠️ Bugfixes & enhancements

  • [bugfix] Revert breaking change to tslint:recommended, update tslint:latest (#4404)
  • [bugfix] Correcting fixer for the increment-decrement rule (#4415)
  • [bugfix] Fix strict-type-predicates with unknown (#4444)
  • [bugfix] Skip linting of .json files to avoid problems with --resolveJsonModule compiler option (#4001)
  • [bugfix] fix some quotemark issues when using backticks with the avoid-template option (#4408)
  • [enhancement] Mention file names in test script parse failures (#4397)

Thanks to our contributors!

  • Young Min Kim
  • Enes SOYLU
  • Thomas den Hollander
  • Adrian Leonhard

v5.12.0

🎉 Features

🛠️ Bugfixes & enhancements

  • [api] Allow exclude to work with node API (#4143)
  • [api] Upgrade TSLint to support TS 3.1 (#4274)
  • [bugfix] Allow whitelisted modules to start with @ symbol (#4192)
  • [bugfix] Added exception for generators in return-undefined rule (#4370)
  • [bugfix] Allow unknown in 'no-object-literal-type-assertion' rule. (#4362)
  • [bugfix] Completed docs rule can check single-line comments (#3841)
  • [bugfix] prefer-method-signature: Correct the auto-fix code of rule, now capable to handle multiline signature. (#4066)
  • [bugfix] Default logger.error should log to stderr. (#3982)
  • [bugfix] Fixes an issue where TSLint doesn't correctly resolve packages in a node_modules folder that are symlinked to another location where their dependencies are satisfied. (#4295)
  • [bugfix] Fix configuration tests when comparing rules (#4346)
  • [bugfix] Fix semicolon: Cannot read property 'initializer' of undefined (#4351)
  • [bugfix] Fix whitespace rule in importClause with 'as' statement (#4249)
  • [bugfix] no-invalid-this: fixes false positives on method-like syntax and false negatives on nested functions (#4034)
  • [bugfix] one-line: Check block in a case clause (#3619)
  • [bugfix] whitespace Don't require space between import and paren with in type imports (#4243)
  • [bugfix] remove no-unused-variable from tslint:all (#4079)
  • [bugfix] callable-types support interfaces containing a single construct signature (#4291) (#4352)
  • [bugfix] ordered-imports: Setting import-sources-order: any no longer invalidates grouped-imports: true (#4374)
  • [develop] Add issue templates (#4028)
  • [develop] Add test for 3.0 (#4119)
  • [develop] Changes the node version from 4 to 6 for TS 2.1 tests. (#4282)
  • [develop] Fix prettier command in package.json (#4275)
  • [develop] Fix semantic merge break from #4374 and #3733 (#4378)
  • [develop] Fix typo in launch.json (#4287)
  • [develop] Prettier (#4012)
  • [develop] Re-ran Prettier on source files again, with some more ignores (#4270)
  • [develop] Update 'json-stringify-pretty-compact' to 1.2.0 and remove unnecessary type declaration (#4371)
  • [develop] Upgrade prettier and run over all files (#4214)
  • [docs] "< 0" means less than zero, not greater than (#4183)
  • [docs] Added badges for dependencies status (#4160)
  • [docs] Additional code examples for rules (#3869)
  • [docs] Clarify no-shadowed-variable doc (#4347)
  • [docs] Fix docs typo (#4165)
  • [docs] Fix docs typo (#4182)
  • [docs] Fix typo in index.md (#4242)
  • [docs] Fix typos in formatter descriptions (#4288)
  • [docs] Fixed typo in documentation (#4047)
  • [docs] Includes new name Azure DevOps for VSO (#4289)
  • [docs] Typo correction in no-unused-expression (#4322)
  • [docs] Update documentation to reflect changes made in #2229. (#4336)
  • [docs] Update stylish example (#4095)
  • [docs] Use latest docs deps to avoid vulnerable libs (#4366)
  • [docs] prefer-object-spread: this is new to ES2018, not ES2015 (#4321)
  • [documentation] Update configuration documentation to include array syntax (#4258)
  • [enhancement] Add homepage to package.json (#4101)
  • [enhancement] Add esSpecCompliant: true to recommended trailing-comma config (#4072)
  • [enhancement] Add new tests to workflows (#4054)
  • [enhancement] Add quiet flag to hide warnings (#4025)
  • [enhancement] Don't flag unmatched ${ in no-invalid-template-strings (#3769)
  • [enhancement] Show offending value in 'no-magic-numbers' error message (#4332)
  • [enhancement] ordered-imports: When grouped-imports option of the rule is set, the fact that imports of the same type are all in one group is also checked. (#3733)
  • [enhancement] Yaml parser now uses default schema, allowing for <<: to be used to merge anchors (#4350)
  • [enhancement] Improve JUnit formatter (#4327)
  • [enhancement] completed-docs: check properties and methods in interfaces (#4032)
  • [enhancement] file-name-casing-rule supports regex expression for matching file (#4284)
  • [enhancement] prose formatter uses line:column instead of [line, column] (#4222)
  • [rule-change] Add "backtick" option for quotemark (#4029)
  • [rule-change] Allow void expressions in binary expressions (#4323)

Thanks to our contributors!

  • Shinigami
  • Matthew Herbst
  • Joshua R
  • John Wiseheart
  • Mitchell Wills
  • Eric Ferreira
  • Daniel Reichhart
  • Rui
  • Pavel Birukov
  • Brian Schlenker
  • Michael Black
  • Andy Hanson
  • atsu85
  • PomanoB
  • Oleg Vaskevich
  • Daniel McNab
  • Jan Pilzer
  • Sebastian Silbermann
  • Michael Lavina
  • reduckted
  • Ryan Waskiewicz
  • Bowen Ni
  • Josh Goldberg
  • Erik
  • Nathan
  • Kevin Verdieck
  • Joe Chung
  • Peter Safranek
  • Xavier Downs
  • Igor Ovsiannikov
  • RyosukeFukushima
  • Andrew Boyton
  • samuela
  • stefanhamburger
  • Carsten Dietzel
  • Jakob Warkotsch
  • Karthick Manoharan
  • Ian Clanton-Thuon
  • Yordis Prieto
  • Mike Frysinger
  • Dario Banfi
  • Gérôme Grignon
  • Antony74
  • Morgan Zolob
  • Young Min Kim
  • rrogowski
  • Eric Anderson
  • Simon Marchi
  • ulrichb
  • Marvin Altemeier
  • Ifiok Jr
  • Andrew MacLeay
  • Ethan
  • Dan Homola
  • NN
  • Roman Rogowski

v5.11.0

⚠️ Deprecations

  • [deprecation]no-unused-variable is deprecated because typescript now covers most of its functionality (#3919)

🎉 Features

🛠️ Bugfixes & enhancements

  • [bugfix]no-use-before-declare Fixes false positives when using the destructuring syntax (#3761) (#3876)
  • [bugfix] Fix Copyright: @license JSDoc tag was missing (#3879)
  • [bugfix] Fix missing newline at end of file (#3896)
  • [bugfix] allow-empty-functions option of no-empty rule is now properly respecting empty methods (#3897)
  • [bugfix]no-magic-numbers - support for negative zero (#3903)
  • [bugfix] Handle tsconfig.json errors without using JSON.stringify (#3908)
  • [bugfix] Fix CI: no-implicit-dependencies test failure; typescript@next failure (#4019)
  • [bugfix] Fix edge case in no-console rule (#4041)
  • [docs] Fix typos in the no-floating-promises rule docs. (#3886)
  • [docs] Updated prefer-while docs to be semantically correct (#3888)
  • [docs] Fix link to configuration page (#3891)
  • [docs] Fix docs typo (#3898)
  • [docs] Fix docs typo (#3910)
  • [enhancement] Turn on strictPropertyInitialization for src/ and test/ (#3924)
  • [enhancement] Use Buffer.allocUnsafe instead of the deprecated new Buffer() (#3985)
  • [enhancement] Improve radix rule checks (#3901)
  • [enhancement] Output +/- on diff so added/removed empty lines are visible. (#3973)
  • [rule-change]no-implicit-dependencies now always considers peer dependencies (#3875)

Thanks to our contributors!

  • Bowen Ni
  • Peter Safranek
  • Saugat Acharya
  • Jason Mendes
  • Ryan Waskiewicz
  • Dariusz Rumiński
  • Xinhu Liu
  • Rado Kirov
  • aervin_
  • Josh Goldberg
  • mertdeg2
  • Jason Killian
  • Adrian Leonhard
  • david-cannady
  • Andy Russell
  • Tibor Blenessy
  • Andrew Crites
  • Pavel Birukov
  • shalomdotnet

v5.10.0

🎉 Features

🛠️ Bugfixes & enhancements

  • [bugfix]file-header rule plays nice with no-trailing-whitespace rule (#3802)
  • [bugfix]no-unbound-method rule allows square bracket property access (#3610)
  • [bugfix]no-unsafe-any no longer marks native JSX elements as unsafe (#3699)
  • [enhancement]file-header auto-fixes use '!' character to ensure header stays above imports (#3741)
  • [enhancement] Better error messages if a rule crashes (#3836)
  • [enhancement] Better error messages when no valid rules are specified (#3729)
  • [enhancement] Better lint messages for unused imports in no-unused-variable rule (#3831)
  • [docs] Improve documentation of cli flag --project (#3703)
  • [docs] Added short rationales for about thirty rules (#3734)
  • [docs] Added optional capability to provide code examples in rules' metadata (#3602)
  • [docs] Many small docs fixes and tweaks from many great contributors!

Thanks to our contributors!

  • Achim Weimert
  • BB9z
  • Blair Zajac
  • Chia-Lun Wu (Leo)
  • Ethan
  • Janis Koehr
  • Josh Goldberg
  • Julian Verdurmen
  • Lucas Sloan
  • Mark Vincze
  • Martin Möhwald
  • Oliver Joseph Ash
  • Pichest Wongsiripiphat
  • Rafael Santana
  • Ruben Bridgewater
  • Ryan Waskiewicz
  • Sehrope Sarkuni
  • Suchan Lee
  • Victor Belozyorov
  • aervin_
  • cwgorman
  • felipeissa
  • jishi9

v5.9.1

🛠️ Bugfixes

  • [bugfix] Removed extraneous deprecation warning produced when using tslint:recommended or tslint:latest by disabling typeof-compare in these rulesets. (#3639)
  • [bugfix] Resolve directories as absolute paths when validating custom rulesDirectory paths, which fixes usage with tslint-loader. (#3640)

v5.9.0

⚠️ Deprecations

  • [deprecation] Several utility functions from src/language/utils.ts have been deprecated (#3476)
  • [deprecation] Linting non-existent files now outputs a warning. This will be an error in TSLint 6. (#3313)

Configuration inheritance changes

Significant changes have been made to configuration inheritance to address a long-standing UX issue around defaultSeverity: #2569.

defaultSeverity defined in a tslint.json file will now override the defaultSeverity value defined in any configurations you are extending. This means that any rules specified in the base configurations can now take on a new defaultSeverity if you so choose. If you extend multiple configuration files, the defaultSeverity defined in the last one wins.

In practice, this allows users to, for example, more easily use the built-in TSLint configurations (tslint:recommended, tslint:latest, tslint:all) and treat all errors as warnings instead of errors.

For more details, see the relevant PRs:

  • Override defaultSeverity defined in extended configs (#3449)
  • Inherit defaultSeverity and apply it to preceding base configs (#3530)

🎉 Features

🛠️ Bugfixes & enhancements

  • [bugfix] Update commander.js dependency to prevent users from transitively installing a buggy 2.12.0 release (#3510)
  • [bugfix] --project excludes all files of external dependencies (#3320)
  • [bugfix] Show errors when tsconfig.json is invalid (#3410)
  • [bugfix]no-implicit-dependencies don't crash on malformed package.json (#3373)
  • [bugfix]strict-type-predicates allows comparing typeof result with non-literals (#3542)
  • [bugfix]no-redundant-jsdoc fixed crash on unhandled tag (#3414)
  • [bugfix]object-literal-sort-keys fixed regression that effectively disabled the rule with \r\n line breaks (#3427)
  • [bugfix]curly fixer now correctly handles comments (#3473)
  • [bugfix]no-unsafe-any fixed false-positive with namespaced types (#3487)
  • [bugfix] Removed potentailly dangerous fixer for no-any (#3486)
  • [bugfix]no-unnecessary-type-assertion fixed false negatives for types with numeric keys (#3468)
  • [bugfix]callable-types adds parentheses when fixing a type literal inside an array type (#3440)
  • [bugfix]no-unsafe-any allows spreading an any value into an object (#3439)
  • [bugfix] no unnecessary whitespace before argument in callback functions fixed with arrow-parens fixer (#3618)
  • [bugfix]prefer-const false negative with index signature named like a variable (#3385)
  • [bugfix]whitespace rule checks property declarations if "check-decl" is enabled (#3546)
  • [bugfix] Using ternary operator for calling super() now passes no-duplicate-super rule. (#3544)
  • [bugfix]no-shadowed-variable now excludes declaration files and ambient modules (#3387)
  • [bugfix]no-duplicate-imports Allow duplicate imports from separate ambient module declarations (#3398)
  • [bugfix]await-promise correctly recognises classes extending Promise (#3383)
  • [bugfix]prefer-conditional-expression: don't repeat error on nested if statements (#3528)
  • [bugfix]completed-docs: don't require documentation on methods in object literals (#3532)
  • [bugfix]one-line fixed crash on syntax error in class or interface (#3538)
  • [bugfix]no-redundant-jsdoc allow @template tag if it has a description (#3415)
  • [bugfix] Fix condition for deprecation of typeof-compare (#3429)
  • [enhancement] Better error message for files not contained in the project (#3313)
  • [enhancement] "properties" option for completed-docs rule now checks getter and setter accessors. (#3497)
  • [enhancement]no-magic-numbers ignores parseInt radix parameter (#3536)
  • [enhancement] Avoid duplicate I/O when using --project option (#3313)
  • [enhancement] clicking the filename in stylish-formatter's output jumps to the first failure in that file. (#3491)
  • [enhancement]ban-comma-operator ignores comma operator inside for-loop incrementor (#3485)
  • [enhancement]space-within-parens updated to always allow empty parentheses (). (#3513)
  • [enhancement] Better error message syntax for completed-docs modifier lists (#3379)
  • [enhancement] Improve failure message & docs for ban-comma-operator (#3384)
  • [enhancement] Output code warnings in yellow instead of red for codeFrame formatter (#3402)
  • [enhancement] Converted completed-docs rule to use a function instead of a walker (#3466)
  • [docs]ban-comma-operator: fix metadata, list as "functionality" rule (#3612)
  • [docs] Enhance no-use-before-declare documentation to clarify the rule's status (#3520)
  • [docs] Enhance await-promise options documentation (#3519)
  • [docs] Add hasFix metadata for the indent rule (#3529)
  • [docs] Clearer rule description for no-irregular-whitespace (#3627)

Thanks to our contributors!

  • Klaus Meinhardt
  • Josh Goldberg
  • Chris Barr
  • Nathan Shively-Sanders
  • Jeremy Morton
  • Sergey Koshechkin
  • Daniel Kucal
  • Eric Smekens
  • Johannes Choo
  • Elena Vilchik
  • Eugene Timokhov
  • Carlo Bottiglieri
  • reduckted
  • Glavin Wiechert
  • jbsingh
  • Mateusz Witkowski
  • HideDev
  • Bruno Lemos
  • aervin_
  • Roman
  • Ryan Waskiewicz

v5.8.0

⚠️ Deprecations

  • [deprecation]typeof-compare is deprecated because typescript already does that check (#3286)
  • [deprecation] CLI argument --type-check is no longer necessary and will be removed in the next major version (#3322)

Updates to tslint:latest configuration

+    "ban-comma-operator": true,
+    "jsdoc-format": {
+        options: "check-multiline-start",
+    },
+    "no-duplicate-switch-case": true,
+    "no-implicit-dependencies": true,
+    "no-return-await": true,

🎉 Features

🛠️ Bugfixes & enhancements

  • [bugfix]no-empty-interface allows providing type arguments for extended type (#3260)
  • [bugfix] Fixed line switches to not disable failures in the next line following the disabled line (#3177)
  • [bugfix]return-undefined handles union return types in async functions (#3298)
  • [bugfix]deprecation checks correct constructor overload (#3203)
  • [bugfix]return-undefined declared return type takes precedence over contextual type (#3298)
  • [bugfix] Correctly mark inputFilePath as an optional parameter in Configuration.findConfiguration() (#3195)
  • [bugfix]return-undefined fixed regressions: once again allows anything if return type is any (#3298)
  • [bugfix]only-arrow-functions allow function if this is used in parameter initializer (#3315)
  • [bugfix]no-conditional-assignment: exclude intentional assignments, e.g. inside functions (#2629)
  • [bugfix]no-angle-bracket-type-assertion fixer adds parentheses when necessary (#3301)
  • [bugfix]no-angle-bracket-type-assertion fixed order when autofixing consecutive assertions (#3301)
  • [bugfix] vso formatter no longer duplicates output for fixed failures (#3348)
  • [bugfix]no-unbound-method: Allow negation of method (#3349)
  • [bugfix]arrow-parens with option "ban-single-arg-parens" no longer produces invalid code when fixed (#3247)
  • [bugfix] Fixed regression where the lookup of tslint.json stopped at the current directory. (#3309)
  • [bugfix] --test works correctly with any compilerOptions.target (#3296)
  • [bugfix] whitepace handles files with BOM and other irregular whitespace (#3305)
  • [bugfix]callable-types auto fix produces invalid results (#3342)
  • [bugfix]no-string-literal correctly fix property names with leading underscores (#3184)
  • [bugfix]variable-name fixed crash on empty variable name (#3292)
  • [bugfix]trailing-comma fixed crash on arrow function without parens (#3246)
  • [bugfix] Fix space-before-function-paren for anonymous/arrow generic functions (#3085)
  • [bugfix] Removed warning printed to console when using the no-unused-variable along with the noUnusedLocals and noUnusedParameters compiler options (#3227)
  • [bugfix]no-invalid-this ignores functions with a this param (#3267)
  • [enhancement] Sort failures by line and character for formatters (#3345)
  • [enhancement]import-blacklist also checks exports and dynamic imports (#3258)
  • [enhancement]no-conditional-assignment added check for conditional (ternary) expressions (#2629)
  • [enhancement] Allow completed-docs to list doc tags that mark a node as not requiring a documentation body. Tags can also provide a regexp matcher to validate that their contents are docs-valid. (#2415)
  • [enhancement]await-promise enforces that for-await-of is only used with AsyncIterable (#3297)
  • [enhancement]one-line checks type alias declarations (#3200)
  • [enhancement]deprecation checks object destructuring (#3318)
  • [enhancement]no-submodule-imports also checks exports (#3258)
  • [enhancement]restrict-plus-operands: More specific error message when arguments include strings (#3220)
  • [enhancement]no-unsafe-any checks more expressions, for example destructuring, yield, property initializer (#3196)
  • [enhancement]object-literal-sort-keys: allow grouping of object properties via additional blank lines when using alphabetical ordering. (#3191)
  • [enhancement] Migrated CLI from using colors module to chalk module (#3171)
  • [enhancement]no-unused-variable applies the ignorePattern to imports (#3187)

Thanks to our contributors!

  • Klaus Meinhardt
  • Charles Samborski
  • Donald Pipowitch
  • Josh Goldberg
  • mmkal
  • Erik
  • Csaba Miklos
  • Dominik Moritz
  • Khalid Saifullah
  • Lukas Spieß
  • Merott Movahedi
  • Bowen Ni
  • ksvitkovsky
  • Hutson Betts
  • Caleb Eggensperger
  • Brent Erickson
  • Trivikram
  • Brandon Furtwangler
  • Pavel Zet
  • aervin_
  • Holger Jeromin
  • Danny Guo
  • Jeremy Morton
  • Cyril Gandon
  • Andy Hanson
  • yadan

v5.7.0

🎉 New rules, options, and fixers

🛠️ Bugfixes & enhancements

  • [api] AbstractRule#applyWithFunction allows additional parameter that is passed through to walkFn (#3140)
  • [api] AbstractRule#applyWithFunction has better type checking for its type parameter (#2660)
  • [bugfix]member-access autofix now correcly inserts public keyword after decorators (#3162)
  • [bugfix]prefer-const correctly handle catch without binding parameter introduced in typescript@2.5.1 (#3151)
  • [bugfix]no-invalid-template-strings allows backslash-prefixed template expressions (#3116)
  • [bugfix]deprecation no longer shows errors on imports and exports (#3141)
  • [bugfix]deprecation: fix false positive when calling a function or method where another overload is deprecated (#2883)
  • [bugfix]whitespace: fixed "check-separator" for trivial for cases. (#3132)
  • [bugfix]prefer-object-spread prevent spreading this as it is not allowed by the compiler (#3126)
  • [bugfix] msbuild formatter uses backslashes in paths on Windows (#3145)
  • [bugfix]no-namespace ignores global augmentation (#3161)
  • [enhancement] remove superfluous empty lines on tslint output. (#3121)
  • [enhancement]no-submodule-imports allows whitelisting of submodules like @angular/core/testing (#3129)
  • [enhancement] custom lint rules will be resolved using node's path resolution to allow for loaders like ts-node (#3108)
  • [enhancement]quotemark no longer requires "single" or "double" to be the first option. The rule defaults to "double" if none is specified. (#3114)
  • [enhancement]no-unused-variable autofix removes trailing comments of imports (#3156)
  • [enhancement]no-unnecessary-type-assertion allows certain necessary assertions to prevent type widening (#3120)

Thanks to our contributors!

  • Paul Gschwendtner
  • Andy Hanson
  • ksvitkovsky
  • Santi Albo
  • aervin
  • Junle Li
  • Joscha Feth
  • WiseBird
  • Caleb Eggensperger
  • WGroenestein
  • Bowen Ni

v5.6.0

🎉 New rules, options, and fixers

🛠️ Bugfixes & enhancements

  • [bugfix]array-type: consider this to be simple type (#2982)
  • [bugfix]await-promise accepts not only union types but also intersection types with Promise-like types (#2987)
  • [bugfix]callable-types: don't remove export modifier of interfaces (#2962)
  • [bugfix]completed-docs: Only checks variables at the file-level. (#2950)
  • [bugfix]completed-docs: Uses correct visibility of variables. (#2950)
  • [bugfix]no-floating-promises: recognize rejection handler passed as second argument to promise.then() (#3048)
  • [bugfix]no-shadowed-variable don't warn for shadowed type parameter on static class members (#3030)
  • [bugfix]no-shadowed-variable fixed false positive with key name in index signature (#3030)
  • [bugfix]no-shadowed-variable fixed false positive with parameter inside function decorator (#3030)
  • [bugfix]no-unsafe-any: allow truthyness and falsyness checks (#3008)
  • [bugfix]no-unused-variable fixed crash when using destructuring (#3058)
  • [bugfix]one-line correctly handles multiline type parameters (#3004)
  • [bugfix]prefer-for-of fixed false positives when array is modified, e.g. arr[i]++ (#3044)
  • [bugfix]prefer-object-spread adds parens when fixing arrow function return (#3026)
  • [bugfix]prefer-object-spread permit functions as first argument to Object.assign (#3098)
  • [bugfix]space-before-function-paren Handle default exports of functions without names like anonymous functions (fixes #3040) (#3053)
  • [bugfix] Fixed an issue where, at runtime, the module ./test/parse could not be located due after consumers had run yarn clean (#3072)
  • [enhancement]no-null-keyword allows strict comparison (#2802)
  • [enhancement]no-switch-case-fall-through matches // falls through comments case insensitive and allows trailing text (#2983)
  • [enhancement]ordered-imports: support importEqualsDeclaration (#3102)
  • [enhancement] Added NaN and (+/-)Infinity as numbers to no-inferrable-types (#2885)
  • [enhancement] Improved CLI error message when no filenames are specified (#3066)
  • [rule-change]prefer-conditional-expression: ignore if-else-if by default. Use the new "check-else-if" option to check nested if statements (#2963)

Thanks to our contributors!

  • Klaus Meinhardt
  • Julian Verdurmen
  • Alexandre Alonso
  • Josh Goldberg
  • ksvitkovsky
  • Daisuke Yokomoto
  • Andrii Dieiev
  • Florent Suc
  • Jason Killian
  • Amin Pakseresht
  • reduckted
  • vilicvane
  • Russell Briggs
  • Andy Hanson
  • Leo Liang
  • Dan Homola
  • BehindTheMath
  • David Golightly
  • aervin
  • Daniel Kucal
  • Ika
  • Chris Barr

v5.5.0

Editor's note: This release features an important bugfix for overlapping fixes when using --project and --fix (#2864).

🎉 New rules and options

🛠️ Bugfixes & enhancements

  • [bugfix]encoding closes files correctly (#2958)
  • [bugfix]whitespace fix whitespace "check-module" to properly lint and fix errors (#2401) (#2825)
  • [bugfix]: whitespace: now correctly handles dynamic imports introduced in typescript@2.4.0 (#2924)
  • [bugfix]switch-final-break: don't fail if break jumps to a label outside of the switch (#2914)
  • [bugfix]no-shadowed-variable: exempt this parameter (#2598)
  • [bugfix]prefer-for-of correctly handles variable scopes and other unrelated identifiers (#2984)
  • [bugfix] Don't leave blank lines when no-unused-variable autofix removes whole import (#2901)
  • [cli] restore -v option (#2926)
  • [enhancement] Print stack trace of exceptions (#2890)
  • [enhancement] Added allow-empty-catch option to no-empty (#2886)
  • [enhancement]prefer-const: handle destructuring in for-of loop initializer as if {"destructuring": "all"} was specified (#2904)
  • [enhancement]no-shadowed-variable: added checks for other shadowing declarations, e.g. interfaces, classes, type parameters, imports, etc. (#2598)
  • [rule-change]no-shadowed-variable no longer fails for declarations in the same scope, e.g. var foo; var foo;. Use the rule no-duplicate-variable to find such errors. (#2598)

Thanks to our contributors!

  • Klaus Meinhardt
  • Josh Goldberg
  • Petr Kosikhin
  • Pablo Núñez
  • Benny Neugebauer
  • Radon Rosborough
  • reduckted
  • Chris Barr
  • Julian Verdurmen

v5.4.3

🛠️ Bugfixes

v5.4.2

🛠️ Bugfixes

  • [bugfix] Restored support for multiple --exclude options in the CLI (#2855)
  • [bugfix] Restored support for --version CLI option (#2857)

v5.4.1

🛠️ Bugfixes

  • [bugfix] Fixed regression in --exclude CLI option when using --project (#2852)

v5.4.0

⭐ Non-breaking API changes

  • --type-check only checks for errors before linting is no longer required to enable rules that use the type checker. You only need to supply --project now.

🎉 New rules, options, and fixers

🛠️ Bugfixes & enhancements

  • [bugfix]prefer-object-spread allows constructor, function and method calls and more as first argument to Object.assign (#2828)
  • [bugfix]no-unbound-method walker skips past the parent if it is a cast or parenthesized expression (#2838)
  • [bugfix]object-literal-shorthand: fixed suggestion for generator functions (#2558)
  • [bugfix] Fixed issue with case sensitivity of no-unused-variable rule on Windows (#2819)
  • [bugfix] don't crash tslint --project if allowJs is set in tsconfig.json (#2823)
  • [bugfix]align with option "members": check members of class expressions; don't check semicolons in classes (#2668)
  • [bugfix]no-inferred-empty-object-type: fix stack overflow (#2762)
  • [bugfix]semicolon: don't warn about unnecesary semicolon when it is actually needed, e.g. when followed by type assertion or template string (#2655)
  • [bugfix]space-before-function-paren: Ignore async arrow function with no parentheses (#2833)
  • [bugfix]: no-unsafe-any: Don't fail on continue label; (#2830)
  • [bugfix]no-unbound-method: Allow unbound method to be used as a condition (#2834)
  • [bugfix]no-unsafe-any: Allow to switch on a value of type any (#2836)
  • [bugfix]no-unsafe-any: Don't mark declare global {} as an unsafe any. (#2839)
  • [bugfix]indent now checks indentation of expressions inside template strings (#2826)
  • [enhancement] --project (or -p) enables rules that require the type checker. --type-check only checks for errors before linting is no longer required (#2773)
  • [enhancement]deprecation: error message includes deprecation text if available (#2748)
  • [enhancement]cyclomatic-complexity: Don't count empty switch case(#2743)
  • [enhancement]strict-boolean-expressions: Allow any, and true and false literal types (#2758)
  • [enhancement]no-floating-promises: Allow 'promise.catch()' (#2774)
  • [enhancement]comment-format no longer excludes comments with triple slash from linting except /// <reference path="..."/> (#2616)
  • [enhancement]prefer-object-spread: lint more locations where return value is used. (#2828)
  • [enhancement]semicolon: option "never" is now spec compliant (#2655)
  • [enhancement]object-literal-shorthand handles async functions correctly (#2558)
  • [enhancement] --test CLI option: allow passing path to tslint.json (#2784)
  • [enhancement] Use commander instead of optimist for CLI arguments (#2689)
  • [enhancement]strict-type-predicates: warn if strictNullChecks is not enabled (#2786)

Thanks to our contributors!

  • Klaus Meinhardt
  • Manuel Lopez
  • Andy Hanson
  • Piotr Tomiak

v5.3.2

  • [bugfix] Fixes not a directory error (#2813)

v5.3.0

This change may require a change to tslint.json

  • [enhancement]prefer-switch: Change default min-cases to 3. (#2669)

🎉 Features & enhancements

  • [new-cli-option] cli: Add outputAbsolutePaths option (#2667)
  • [new-rule]prefer-object-spread (#2624)
  • [new-rule]encoding (#2368)
  • [new-rule]prefer-conditional-expression (#2363)
  • [new-rule-option]indent support indent size (#2723)
  • [new-rule-option]object-literal-sort-keys adds ignore-case (#2592)
  • [new-rule-option]quotemark: Add avoid-template option (#2766)
  • [new-rule-option]await-promise: What's considered a "Promise" is now configurable. (#2661)
  • [new-fixer]indent (#2723)
  • [new-fixer]typedef-whitespace (#2718)
  • [enhancement] better error messages in variable-name (#2672)
  • [enhancement]typedef: Use name or parameters for error location (#2460)
  • [enhancement]object-literal-sort-keys: check shorthand properties (#2592)
  • [enhancement]space-before-function-paren: Handle get/set accessor (#2700)
  • [enhancement]typedef-whitespace added checks for arrow function, call and construct signature (#2718)
  • [enhancement]no-object-literal-type-assertion: Allow cast to any (#2671)
  • [enhancement] cli: -p option handles directories (#2756)
  • [develop] testing rules with type information is enabled when a tsconfig.json is found next to tslint.json (#2769)
  • [configuration] deprecate mixed case tslint.json (#2713)
  • [bugfix]return-undefined: Treat a return type void | undefined same as void (#2731)
  • [bugfix]no-unnecessary-initializer: Handle BindingElement anywhere, not just in a VariableDeclaration. (#2707)
  • [bugfix]jsdoc-format: correctly handle alignment in files with BOM (#2619)
  • [bugfix]jsdoc-format: don't treat empty comments (/**/) as jsdoc (#2619)
  • [bugfix]typedef-whitespace don't warn for leading whitespace if token is preceded by line break (#2718)
  • [bugfix] Make "completed-docs" rule respect "public" privacy (or lack thereof) (#2749)
  • [bugfix]jsdoc-format: fixed error position if line ends with \r\n (#2619)
  • [bugfix]prefer-switch: add missing checks for some expressions (#2686)
  • [bugfix]prefer-template: Allow "a" + "b" + "c". (#2741)
  • [bugfix]prefer-const: fix false positive with variable declared outside of for-of or for-in (#2760)
  • [bugfix] --project: fix file matching with relative path to tsconfig.json (#2688)
  • [bugfix]no-default-export: correctly handle export default abstract class {...} (#2630)
  • [bugfix]no-mergeable-namespace: display correct line in error message (#2656)
  • [bugfix]object-literal-sort-keys: handle object spread correctly (#2592)
  • [bugfix] Consistently output absolute/relative paths (#2667)
  • [bugfix]await-promise: Consider types derived from a Promise in union types too. (#2661)
  • [bugfix]no-unsafe-any: Fix bug where number literal in type position was flagged as an unsafe any. (#2712)
  • [api] Deprecate Lint.Utils.objectify (#2764)

Thanks to our contributors!

  • Andy Hanson
  • Klaus Meinhardt
  • Martin Probst
  • Filipe Silva
  • walkerburgin
  • René Scheibe

v5.2.0

  • [rule-change]no-console bans all console methods when no methods are specified (#2610)
  • [new-rule]no-object-literal-type-assertion (#2580)
  • [new-rule]no-irregular-whitespace (#2487)
  • [new-rule]prefer-switch (#2331)
  • [new-rule]number-literal-format (#2526)
  • [new-rule]deprecation (#2395)
  • [new-rule]no-unnecessary-type-assertion (#2519)
  • [new-fixer]interface-over-type-literal (#2617)
  • [new-fixer]callable-types (#2552)
  • [new-fixer]no-string-literal (#2495)
  • [new-fixer]no-internal-module (#2517)
  • [new-rule-option]align rule added members option, which checks alignment of methods and properties of classes, objects, interfaces, type literals and object destructuring (#2387)
  • [new-rule-option]align rule added elements option, which checks alignment of elements in array literals, array destructuring and tuple types (#2387)
  • [new-rule-option]trailing-comma adds more granular options to specify trailing commas for arrays, objects, functions, type literals, imports, and exports (#2538)
  • [api] Deprecate ScopeAwareRuleWalker and BlockScopeAwareRuleWalker. (#2561)
  • [develop] added support for error templates in rule tests (#2481)
  • [bugfix] Fixes "Severity for rule not found" error (#2516)
  • [bugfix]no-unused-expression: allow void(0) in addition to void 0 and void in expression and statement position (#2645)
  • [bugfix]align: fix false positive for files with BOM (#2642)
  • [bugfix]return-undefined: Handle contextual types with ambiguous signatures; allow any; and handle async functions. (#2576)
  • [bugfix]semicolon: don't mark semicolon as unnecessary when the next statement is on the same line (#2591)
  • [bugfix]no-internal-module: no more false positives for global augmentation (#2517)
  • [bugfix]no-unnecessary-qualifier: no longer breaks when walking a function that references arguments (#2555)
  • [bugfix]prefer-const no longer shows warnings on ambient declarations (#2391)
  • [bugfix]callable-types: suggest correct fix for interfaces with type arguments (#2552)
  • [bugfix]quotemark: fix regression with jsx attributes (#2605)
  • [bugfix]adjacent-overload-signatures handles functions ending in semicolon (#2412)
  • [bugfix]object-literal-key-quotes: correctly stringify numbers when fixing (#2515)
  • [bugfix]object-literal-key-quotes: does no longer require quotes for property names containing digits (#2515)
  • [enhancement] Failures in extended config files now indicate which file (#2588)
  • [enhancement]align: Don't report 'statements are not aligned' for empty statements (#2653)
  • [enhancement]class-name now also checks class expressions (#2553)
  • [enhancement] optionExamples: Allow to use an options array directly instead of a string representation. (#2527)
  • [enhancement] rulesDirectory can now be resolved with Nodes resolve logic, if the directory contains an index.js (#2163) (#2358)
  • [enhancement]no-unused-expression: narrow error location for comma separated expressions and conditional expressions (#2645)
  • [enhancement]no-string-literal now handles escaped strings (#2495)
  • [enhancement]no-unnecessary-callback-wrapper: Allow x => x(x) (#2524)
  • [enhancement]no-var-keyword: Allow global var declarations (#2513)

Thanks to our contributors!

  • Andy Hanson
  • Alex Eagle
  • Donald Pipowitch
  • Klaus Meinhardt
  • Gord P
  • Andy
  • Quentin
  • Mitchell Wills
  • Vito
  • CSchulz
  • Josh Goldberg
  • Brian Olore
  • Manuel Lopez
  • James Clark

v5.1.0

  • [new-rule] no-invalid-template-strings (#2332)
  • [new-rule] no-sparse-arrays (#2407)
  • [new-rule-option] no-void-expression: adds ignore-arrow-function-shorthand (#2445)
  • [api] tslint:all configuration (#2417)
  • [bugfix] In tslint:recommended move no-reference-import from jsRules to rules (#2441)
  • [bugfix] no-unnecessary-callback-wrapper: only check if callback is identifier, allow all other expressions (#2510)
  • [bugfix] member-access: Skip index signature, it can not have an access modifier (#2437)
  • [bugfix] restrict-plus-operands fixes regression where every assignment and comparison was checked (#2454)
  • [bugfix] no-unnecessary-callback-wrapper: allow async wrapper function (#2510)
  • [bugfix] prefer-for-of: No error if delete is used (#2458)
  • [bugfix] radix: don't warn for missing radix on method calls (#2352)
  • [bugfix] no-use-before-declare: Handle symbol with empty declarations list. (#2436)
  • [bugfix] strict-type-predicates: Check for construct signatures in isFunction. (#2479)
  • [enhancement] strict-boolean-expressions: When --strictNullChecks is turned off, allow-null-union and allow-undefined-union turn off "always truthy" errors. (#2373)
  • [enhancement] radix: added check for global.parseInt and window.parseInt (#2352)
  • [enhancement] arrow-return-shorthand: Improve failure message when return expression is an object literal (#2466)

Thanks to our contributors!

  • Andy Hanson
  • bumbleblym
  • Klaus Meinhardt
  • Jonas Kello
  • Minko Gechev
  • Donald Pipowitch

v5.0.0

🔥 Breaking changes

  • Minimum version of TypeScript version is now 2.1.0 (#2425)
  • The severity level of rules are now configurable and defaults to severity "error". This affects the output of formatters:
    • [formatter] msbuild was outputting all failures as "warning".
    • [formatter] pmd was outputting all failures as priority 1. Now, it uses priority 3 for "error" (default) and priority 4 for "warning"
  • [formatter] json changed the fix property to now contain either one replacement or an array of replacements (#2403)
  • tslint:recommended configuration updated with tslint:latest rules & options (#2424)
  • Removed no-unused-new rule, with logic moved into no-unused-expression (#2269)
  • no-trailing-whitespace now checks template strings by default. Use the new options ignore-template-strings to restore the old behavior. (#2359)

API breaks for custom rules

  • Removed method skip from RuleWalker (#2313)

  • Removed all use of the TypeScript Language Service, use only Program APIs instead (#2235)

    • This means that some rules that previously worked without the type checker now require it. This includes:

      • no-unused-variable
      • no-use-before-declare

    • This breaks custom rule compilation. If your rule was not using the ts.LanguageService APIs, the migration is quite simple:

    - public applyWithProgram(srcFile: ts.SourceFile, langSvc: ts.LanguageService): Lint.RuleFailure[] {
-     return this.applyWithWalker(new Walker(srcFile, this.getOptions(), langSvc.getProgram()));
+ public applyWithProgram(srcFile: ts.SourceFile, program: ts.Program): Lint.RuleFailure[] {
+     return this.applyWithWalker(new Walker(srcFile, this.getOptions(), program));

  • Removed createFix. Replacements should be passed directly into addFailure. (#2403)

  • Removed deprecated scanAllTokens and skippableTokenAwareRuleWalker (#2370)

🎉 Notable features & enhancements

  • [feature] The severity level of rules are now individually configurable. Default severity can also be configured. (#629, #345)

    • Valid values for severity: default | error | warn | warning | none | off
    • Valid values for defaultSeverity: error | warn | warning | none | off
    • Old style:
    {
    "extends": "tslint:latest",
    "rules": {
        "callable-types": true,
        "max-line-length": [true, 140]
    }
}
    • New style (in this example, callable-types outputs errors and max-line-length outputs warnings):
    {
    "extends": "tslint:latest",
    "defaultSeverity": "error",
    "rules": {
        "callable-types": true,
        "max-line-length": {
            "options": 140,
            "severity": "warning"
        }
    }
}

  • [new-rule] prefer-template (#2243)

  • [new-rule] return-undefined (#2251)

  • [new-rule] no-reference-import (#2273)

  • [new-rule] no-unnecessary-callback-wrapper (#2249)

  • [new-fixer] linebreak-style (#2394)

  • [new-fixer] eofline (#2393)

Full list of changes

  • [api] Added class OptionallyTypedRule, which allows rule authors to write a rule that applies when typing is either enabled or disabled (#2300)
  • [bugfix] prefer-function-over-method now ignores abstract methods (#2307)
  • [bugfix] arrow-parens with option ban-single-arg-parens now correctly handles functions with return type annotation (#2265)
  • [bugfix] prefer-function-over-method exclude overload signatures (#2315)
  • [bugfix] use-isnan now applies only to comparison operators (#2317)
  • [bugfix] file-header-rule now handles single-line comments correctly (#2320)
  • [bugfix] newline-before-return: fix handling of blank lines between comments (#2321)
  • [bugfix] trailing-comma No longer enforce trailing commas in type parameters and tuple types (#2236)
  • [bugfix] align don't fix if it would remove code (#2379)
  • [bugfix] unified-signatures now recognizes rest parameters (#2342)
  • [bugfix] no-inferrable-types don't warn for inferrable type on readonly property (#2312)
  • [bugfix] trailing-comma no longer crashes on new without parentheses (e.g. new Foo) (#2389)
  • [bugfix] semicolon Ignore comments when checking for unnecessary semicolon (#2240)
  • [bugfix] semicolon Don't report unnecessary semicolon when followed by regex literal (#2240)
  • [bugfix] CLI: exit with 0 on type check errors when --force is specified (#2322)
  • [bugfix] CLI: --test now correctly strips single quotes from patterns on windows (#2322)
  • [bugfix] prefer-const only fix initialized variables (#2219)
  • [bugfix] prefer-const correctly handle variables shadowed by parameters and catched exceptions (#2219)
  • [bugfix] prefer-const don't warn if one variable in a for loop initializer can not be const (#2219)
  • [bugfix] prefer-const handle more cases in destructuring (#2219)
  • [bugfix] no-unused-expression allow comma separated assignments (#2269)
  • [chore] removed update-notifier dependency (#2262)
  • [development] allow rule tests to specify version requirement for typescript (#2323)
  • [enhancement] ignore-properties option of no-inferrable-types now also ignores parameter properties (#2312)
  • [enhancement] unified-signatures now displays line number of the overload to unify if there are more than 2 overloads (#2270)
  • [enhancement] trailing-comma New checks for CallSignature and NamedExports (#2236)
  • [enhancement] semicolon New check for export statements, function overloads and shorthand module declaration (#2240)
  • [enhancement] semicolon Report unnecessary semicolons in classes and in statement position (for option "always" too) (#2240)
  • [enhancement] semicolon check for semicolon after method overload (#2240)
  • [enhancement] array-type now consider object, undefined and never as simple types, allowing object, undefined[] and never[] (#1843)(#2353)
  • [enhancement] align check statement alignment for all blocks (#2379)
  • [enhancement] aligncheck parameter alignment for all signatures (#2379)
  • [enhancement] --test can handle multiple paths at once (#2322)
  • [enhancement] only-arrow-functions allow functions that use this in the body (#2229)
  • [enhancement] CLI: print error when --type-check is used without --project (#2322)
  • [enhancement] CLI: don't print stack trace on type check error (#2322)
  • [enhancement] CLI: added -p as shorthand for --project to be consistent with tsc (#2322)
  • [enhancement] prefer-const show warnings for var (#2219)
  • [enhancement] quotemark fixer unescapes original quotemark (e.g. '\'' -> "'") (#2359)
  • [enhancement] no-unused-expression allow indirect eval (0, eval)(""); (#2269)
  • [enhancement] no-unused-expression checking for unused new can now use option allow-fast-null-checks (#2269)
  • [enhancement] no-unused-expression find unused comma separated expressions in all locations of the code (#2269)
  • [enhancement] no-unused-expression find unused expressions inside void expression (#2269)
  • [new-config-option] Adds defaultSeverity with options error, warning, and off. (#2416)
  • [new-formatter] TAP formatter (#2325)
  • [new-rule-option] no-unused-expression adds option allow-tagged-template to allow tagged templates for side effects (#2269)
  • [new-rule-option] no-unused-expression adds option allow-new to allow new without using the new object (#2269)
  • [new-rule-option] member-access adds no-public option (#2247)
  • [new-rule-option] curly added option ignore-same-line (#2334)
  • [new-rule-option] {destructuring: "all"} to only warn if all variables in a destructuring can be const (#2219)
  • [new-rule-option] added ignore-template-strings to no-trailing-whitespace (#2359)
  • [rule-update] array-type now consider undefined and never as simple types, allowing undefined[] and never[] (#1843)

Thanks to our contributors!

  • Brian Olore
  • Andy Hanson
  • @andy-ms
  • Chris Barr
  • Klaus Meinhardt
  • @bumbleblym
  • Josh Goldberg
  • James Clark
  • @vilic
  • Aleksandr Filatov
  • Matt Banz
  • Karol Janyst
  • Mike Deverell
  • Alexander James Phillips
  • Irfan Hudda

v4.5.1

  • [enhancement] Updated recommended rules to include ban-types and no-duplicate-super (#2271)
  • [bugfix] object-literal-key-quotes handle negative number property name (#2273)

v4.5.0

  • [new-rule] no-import-side-effect (#2155)
  • [new-rule] match-default-export-name (#2117)
  • [new-rule] no-non-null-assertion (#2221)
  • [new-rule] ban-types (#2175)
  • [new-rule] no-duplicate-super (#2038)
  • [new-rule] newline-before-return (#2173)
  • [new-rule-option] completed-docs adds options for location, type, and privacy. Also adds interfaces, enums, types (#2095)
  • [new-rule-option] no-inferrable-types adds option ignore-properties (#2178)
  • [new-rule-option] typedef adds options object-destructuring and array-destructuring options (#2146)
  • [new-rule-option] member-ordering adds option alphabetize (#2101)
  • [new-rule-option] no-trailing-whitespace adds option ignore-jsdoc (#2177)
  • [new-rule-option] no-trailing-whitespace adds option ignore-comments option (#2153)
  • [new-fixer] no-inferrable-types automatically remove inferrable type annotations (#2178)
  • [new-fixer] no-any (#2165)
  • [new-fixer] noConsecutiveBlankLines (#2201)
  • [new-fixer] object-literal-shorthand (#2165)
  • [bugfix] no-switch-case-fallthrough handle break, throw, continue and return nested in block, if-else and switch (#2218)
  • [bugfix] no-switch-case-fallthrough allow empty case clauses before default clause (#2218)
  • [bugfix] no-mergeable-namespace ignore property types that can't be merged (#2105)
  • [bugfix] object-literal-key-quotes no need to quote a float if its .toString() is the same. (#2144)
  • [bugfix] no-consecutive-blank-lines Correctly apply fixes at EOF (#2239)
  • [bugfix]: Fixes installation issue with node 7.5 (#2212)
  • [bugfix]: quotemark now handles escaped chars (#2224)
  • [enhancement] Don't exit when a rule requires type checking but type checking is not enabled (#2188)
  • [enhancement] no-switch-case-fallthrough allow single line comment // falls through (#2218)
  • [enhancement] no-unbound-method allows property access and binary expressions (#2143)
  • [api] Introduce AbstractWalker for performance (#2093)

Thanks to our contributors!

  • Andy Hanson
  • Stefan Reichel
  • Shlomi Assaf
  • Josh Goldberg
  • Minko Gechev
  • Irfan Hudda
  • Klaus Meinhardt
  • Martin Probst
  • Naoto Usuyama
  • Caleb Eggensperger
  • Arturs Vonda
  • Joscha Feth
  • Moritz
  • Alexander Rusakov
  • Alex Ryan
  • Andy
  • Yuichi Nukiyama

v4.4.2

  • [bugfix] whitespace rule caused false positive on EOF (#2131)
  • [bugfix] WebStorm fails because json formatter parameter has extra space (#2132)

v4.4.1

  • [bugfix] errant space in recommended ruleset (couldn't find no-misused-new)

v4.4.0

  • [new-rule] arrow-return-shorthand (#1972)
  • [new-rule] no-unbound-method (#2089)
  • [new-rule] no-boolean-literal-compare (#2013)
  • [new-rule] no-unsafe-any (#2047)
  • [new-rule] no-unnecessary-qualifier (#2008)
  • [new-rule] no-unnecessary-initializer (#2106)
  • [new-rule] await-promise (#2102)
  • [new-rule] no-floating-promises (#1632)
  • [new-rule] strict-type-predicates (#2046)
  • [new-rule] no-misused-new (#1963)
  • [new-rule] prefer-method-signature (#2028)
  • [new-rule] prefer-function-over-method (#2037)
  • [new-rule-option] allow-fast-null-checks added to no-unused-expression (#1638)
  • [new-rule-option] comment-format-rule adds ignore-words and ignore-pattern options (#1757)
  • [new-rule-option] whitespace adds check-preblock option (#2002)
  • [new-rule-option] strict-boolean-expressions adds allow-null-union, allow-undefined-union, allow-string, and allow-number and (#2033)
  • [new-fixer] align (#2097)
  • [new-fixer] no-trailing-whitespace (#2060)
  • [bugfix] no-magic-numbers false positive on default parameter values (#2004)
  • [bugfix] no-empty-interface allow empty interface with 2 or more parents (#2070)
  • [bugfix] no-trailing-whitespace fixed for comments and EOF (#2060)
  • [bugfix] no-empty no longer fails for private or protected constructor (#1976)
  • [bugfix] tslint:disable/tslint-enable now handles multiple rules and fixes what code is enabled/disabled (#2061)
  • [bugfix] no-inferrable-types now validates property declarations (#2081)
  • [bugfix] unified-signatures false positive (#2016)
  • [bugfix] whitespace finds all whitespace errors in JsxExpressions and TemplateExpressions (#2036)
  • [bugfix] comment-format no more false positives in JsxText (#2036)
  • [enhancement] --test option now accepts glob (#2079)

Thanks to our contributors!

  • Alexander Rusakov
  • Andrii Dieiev
  • @andy-ms
  • Andy Hanson
  • Josh Goldberg
  • Kei Son
  • Klaus Meinhardt
  • Krati Ahuja
  • Martin Probst
  • Mohsen Azimi
  • Romke van der Meulen
  • cameron-mcateer

v4.3.1

  • [bugfix] Fix back-compat break. Allow formattersDirectory === null (#1997)

v4.3.0

  • Enabled additional rules in tslint:latest configuration (#1981)
  • [new-rule] space-before-function-paren (#1897)
  • [new-rule] typeof-compare (#1927)
  • [new-rule] import-spacing (#1935)
  • [new-rule] unified-signatures (#1944)
  • [new-fixer] object-literal-key-quotes (#1953)
  • [new-fixer] no-angle-bracket-type-assertion (#1979)
  • [bugfix] adjacent-overload-signature now handles static/computed function names (#1831)
  • [bugfix] file-header now handles files with only comments (#1913)
  • [bugfix] no-consecutive-blank-lines now allows blank lines in template strings (#1886)
  • [bugfix] object-literal-key-quotes no longer throws exception when using rest operator (#1916)
  • [bugfix] restrict-plus-operands no longer shows false positive in ternary operation (#1925)
  • [bugfix] prefer-for-of now handles nested for loops with reused iterator (#1926)
  • [bugfix] Exit gracefully when tsconfig.json passed as --project argument doens't have files (#1933)
  • [bugfix] object-literal-key-quotes now handles shorthand and spread properties (#1945)
  • [bugfix] arrow-parens Allow binding patterns ([x, y]) => ... and ({x, y}) => ... to have parens (#1958)
  • [bugfix] semicolon fixer now handles comma separator in interfaces and indicates failure when commas are using in interfaces (#1856)
  • [bugfix] only-arrow-functions option allow-named-functions now allows function declarations (#1961)
  • [bugfix] prefer-for-of no longer shows false positive when array is in parentheses (#1986)
  • [bugfix] prefer-const now works for TypeScript versions < 2.1.0 (#1989)
  • [enhancement] member-access narrow location of error (#1964)

Thanks to our contributors!

  • Andrii Dieiev
  • @andy-ms
  • Andy Hanson
  • Josh Goldberg
  • Klaus Meinhardt
  • Linda_pp
  • Mohsen Azimi
  • Victor Grigoriu
  • Yuichi Nukiyama
  • cameron-mcateer

v4.2.0

  • [new-rule] no-string-throw (#1878)
  • [new-rule] no-empty-interface (#1889)
  • [new-rule] interface-over-type-literal (#1890)
  • [new-rule] callable-types (#1891)
  • [new-rule] no-void-expression (#1903)
  • [new-rule-option] ban-single-arg-parens added to arrow-parens (#1893)
  • [bugfix] prefer-const handles destructuring arrays (#1894), destructuring objects (#1906), and forward references (#1908)
  • [bugfix] Don't error for misplaced braces for 'else' in one-line rule (#1866)
  • [bugfix] no-shadowed-variable now identifies shadowed for iterator (#1816)
  • [bugfix] object-literal-key-quotes now includes function names (#1874)
  • [bugfix] error when EOF comes after disable-next-line comment (#1902)

Thanks to our contributors!

  • Andrew Scott
  • @andy-ms
  • Andy Hanson
  • James Booth
  • Klaus Meinhardt
  • Vladimir Matveev

v4.1.1

  • [bugfix] typedef rule was showing false positive for catch clause (#1887)

v4.1.0

  • [new-rule] prefer-const (#1801)
  • [new-rule] strict-boolean-expressions (#1820)
  • [new-rule] no-magic-numbers (#1799)
  • [new-rule] import-blacklist (#1841)
  • [new-rule] promise-functions-async (#1779)
  • [new-rule] no-inferred-empty-object-type: a type must be specified when using a generic class/function/etc (#1821)
  • [new-rule-option] allow-named-functions added to only-arrow-functions (#1857)
  • [new-fixer] prefer-const (#1801)
  • [new-fixer] quotemark (#1790)
  • [new-formatter] code-frame formatter shows you the error in context (#1819)
  • [enhancement] no-internal-module failures highlight less text (#1781)
  • [enhancement] Avoid auto-fixing errors that would result in compilation errors for rules that use type-check (#1608)
  • [rule-change] only-arrow-functions will allow functions with a this parameter (#1597)
  • [bugfix] no-use-before-declare false positive on named import (#1620)
  • [bugfix] prefer-for-of was showing false positive when the element is assigned (#1813)
  • [bugfix] The command line argument type-check was swallowing the next argument (#1783)
  • [bugfix] tslint:disable-line was re-enabling tslint:disable (#1634)
  • [bugfix] adjacent-overload-signatures did not work for constructors (#1800)
  • [bugfix] checkstyle formatter was reporting errors under one file (#1811)
  • [bugfix] trailing-comma was applied to parameter lists (#1775)
  • [api] CLI logic moved into API friendly class (#1688)

Thanks to our contributors!

  • Alex Eagle
  • Andrii Dieiev
  • Andy Hanson
  • Art Chaidarun
  • Donald Pipowitch
  • Feisal Ahmad
  • Josh Goldberg
  • Klaus Meinhardt
  • Maciej Sypień
  • Mohsen Azimi
  • Ryan Lester
  • Simon Schick
  • Subhash Sharma
  • Timothy Slatcher
  • Yaroslav Admin
  • Yuichi Nukiyama
  • tdsmithATabc
  • @wmrowan

v4.0.2

  • [enhancement] Don't exit when a rule can't be found. Print as a warning instead (#1771)
  • [api-change] Allow 3rd party apps to see exception when the config is invalid (#1764)
  • [bugfix] Don't flag a property named as empty string as not needing quotes in an object literal (#1762)
  • [bugfix] Report correct number of fixes done by --fix (#1767)
  • [bugfix] Fix false positives and exceptions in prefer-for-of (#1758)
  • [bugfix] Fix adjacent-overload-signatures false positive when a static function has the same name (#1772)

Thanks to our contributors!

  • @gustavderdrache

v4.0.1

  • [bugfix] Removed no-unused-variable rule from recommended config, as it was causing spurious deprecation warnings.

v4.0.0-dev.2

  • Include latest v4.0.0 changes

v4.0.0

  • BREAKING CHANGES
    • [api-change] Minor changes to the library API. See this PR for changes and upgrade instructions (#1720)
    • [removed-rule] Removed no-unreachable rule; covered by compiler (#661)
    • [enhancement] Changed order of applied configuration files for the extends array to make it more intuitive. (#1503)
    • [enhancement] Changed TypeScript peer dependency to >= 2.0.0 (#1710)
  • [new-rule] completed-docs rule added (#1644)
  • [new-fixer] ordered-imports auto fixed (#1640)
  • [new-fixer] arrow-parens auto fixed (#1731)
  • [rule-change] indent rule now ignores template strings (#1611)
  • [new-rule-option] object-literal-key-quotes adds the options consistent and consistent-as-needed (#1733)
  • [enhancement] --fix option added to automatically fix selected rules (#1697)
  • [enhancement] Updated recommend rules (#1717)
  • [enhancement] adjacent-overload-signatures now works with classes, source files, modules, and namespaces (#1707)
  • [enhancement] Users are notified if they are using an old TSLint version (#1696)
  • [bugfix] Lint .jsx files if jsRules are configured (#1714)
  • [bugfix] Command line glob patterns now handle single quotes (#1679)

Thanks to our contributors!

  • Andrii Dieiev
  • Andy
  • Chris Barr
  • Davie Schoots
  • Jordan Hawker
  • Josh Goldberg
  • Stepan Riha
  • Yuichi Nukiyama

v4.0.0-dev.1

  • BREAKING CHANGES
    • [enhancement] The semicolon rule now disallows semicolons in multi-line bound class methods (to get the v3 behavior, use the ignore-bound-class-methods option) (#1643)
    • [removed-rule] Removed use-strict rule (#678)
    • [removed-rule] Removed label-undefined rule; covered by compiler (#1614)
    • [enhancement] Renamed no-constructor-vars to no-parameter-properties (#1296)
    • [rule-change] The orderedImports rule now sorts relative modules below non-relative modules (#1640)
  • Deprecated
  • [enhancement] Lint .js files (#1515)
  • [new-fixer] no-var-keyword replaces var with let (#1547)
  • [new-fixer] trailing-comma auto fixed (#1546)
  • [new-fixer] no-unused-variable auto fixed for imports (#1568)
  • [new-fixer] semicolon auto fixed (#1423)
  • [new-rule] max-classes-per-file rule added (#1666)
  • [new-rule-option] no-consecutive-blank-lines rule now accepts a number value indicating max blank lines (#1650)
  • [new-rule-option] ordered-imports rule option import-sources-order accepts value any (#1602)
  • [bugfix] no-empty rule fixed when parameter has readonly modifier
  • [bugfix] no-namespace rule: do not flag nested or .d.ts namespaces (#1571)

Thanks to our contributors!

  • Alex Eagle
  • Andrii Dieiev
  • Ben Coveney
  • Boris Aranovich
  • Chris Barr
  • Cyril Gandon
  • Evgeniy Zhukovskiy
  • Jay Anslow
  • Kunal Marwaha
  • Martin Probst
  • Mingye Wang
  • Raghav Katyal
  • Sean Dawson
  • Yuichi Nukiyama
  • jakpaw

v4.0.0-dev.0

  • BREAKING CHANGES
    • [enhancement] Drop support for configuration via package.json (#1579)
    • [removed-rule] Removed no-duplicate-key rule; covered by compiler (#1109)
    • [enhancement] Call formatter once for all file results. Format output may be different (#656)
    • [rule-change] trailing-comma supports function declarations, expressions, and types (#1486)
    • [rule-change] object-literal-sort-keys now sorts quoted keys (#1529)
    • [rule-change] semicolon now processes type aliases (#1475)
    • [rule-change] no-var-keyword now rejects export var statements (#1256)
    • [rule-change] semicolon now requires semicolon for function declaration with no body (#1447)
  • [new-formatter] fileslist formatter writes a list of files with errors without position or error type specifics (#1558)
  • [new-rule] cyclomaticComplexity, enforces a threshold of cyclomatic complexity.] (#1464)
  • [new-rule] prefer-for-of, which errors when for(var x of y) can be used instead of for(var i = 0; i < y.length; i++) (#1335)
  • [new-rule] array-type, which can require using either `T[]' or 'Array' for arrays (#1498)
  • [rule-change] object-literal-sort-keys checks multiline objects only (#1642)
  • [rule-change] ban rule now can ban global functions (#327)
  • [bugfix] always write lint result, even if using formatter (#1353)
  • [bugfix] npm run test:bin fails on Windows (#1635)
  • [bugfix] Don't enforce trailing spaces on newlines in typedef-whitespace rule (#1531)
  • [bugfix] jsdoc rule should not match arbitrary comments (#1543)
  • [bugfix] one-line rule errors when declaring wildcard ambient modules (#1425)

Thanks to our contributors!

  • Alex Eagle
  • Andrii Dieiev
  • Andy Hanson
  • Ben Coveney
  • Boris Aranovich
  • Chris Barr
  • Christian Dreher
  • Claas Augner
  • Josh Goldberg
  • Martin Probst
  • Mike Deverell
  • Nina Hartmann
  • Satoshi Amemiya
  • Scott Wu
  • Steve Van Opstal
  • Umar Bolatov
  • Vladimir Matveev
  • Yui

v3.15.1

  • Enabled additional rules in tslint:latest configuration (#1506)

v3.15.0

  • Stable release containing changes from the last dev release (v3.15.0-dev.0)

v3.15.0-dev.0

  • [enhancement] Rules can automatically fix errors (#1423)
  • [enhancement] Better error messages for invalid source files (#1480)
  • [new-rule] adjacent-overload-signatures rule (#1426)
  • [new-rule] file-header rule (#1441)
  • [new-rule] object-literal-shorthand rule (#1488)
  • [new-rule-option] allow-declarations option for only-arrow-functions rule (#1452)
  • [new-rule-option] import-sources-order option for ordered-imports rule (#1466)
  • [bugfix] arrow-parens rule handles async and generics (#1446, #1479)
  • [bugfix] comment-format rule ignores tslint control comments (#1473)
  • [bugfix] Fix no-shadowed-variable rule false positives (#1482)

Thanks to our contributors!

  • @apacala
  • @danvk
  • @DovydasNavickas
  • @glen-84
  • @IllusionMH
  • @JoshuaKGoldberg
  • @markwongsk
  • @rakatyal
  • @rhysd
  • @ScottSWu
  • @YuichiNukiyama

v3.14.0

  • Stable release containing changes from the last dev releases (v3.14.0-dev.0, v3.14.0-dev.1)

v3.14.0-dev.1

  • [new-rule] arrow-parens rule (#777)
  • [new-rule] max-file-line-count rule (#1360)
  • [new-rule] no-unsafe-finally rule (#1349)
  • [new-rule] no-for-in-array rule (#1380)
  • [new-rule] object-literal-key-quotes rule (#1364)
  • [enhancement] Better ban rule failure messages (#1385)
  • [enhancement] New stylish formatter (#1406)

Thanks to our contributors!

  • @chrismbarr
  • @danvk
  • @gjuchault
  • @lowkay
  • @ScottSWu
  • @YuichiNukiyama

v3.14.0-dev.0

  • [enhancement] Add optional type information to rules (#1323)

Thanks to our contributors!

  • @ScottSWu

v3.13.0

  • Stable release containing changes from the last dev release (v3.13.0-dev.0)

v3.13.0-dev.0

  • [new-rule] ordered-imports rule (#1325)
  • [enhancement] MPEG transport stream files are ignored by the CLI (#1357)

Thanks to our contributors!

  • @chrismbarr
  • @corydeppen
  • @danvk
  • @janaagaard75
  • @mprobst

v3.12.0-dev.2

  • [enhancement] Support TypeScript v2.0.0-dev builds

v3.12.1

  • Stable release containing changes from the last dev release (v3.12.0-dev.1)

v3.12.0-dev.1

  • [bugfix] Fix null reference bug in typedef rule (#1345)

v3.12.0

  • Stable release containing changes from the last dev release (v3.12.0-dev.0)

v3.12.0-dev.0

  • [new-rule] only-arrow-functions rule (#1318)
  • [new-rule] no-unused-new rule (#1316)
  • [new-rule-option] arrow-call-signature option for typedef rule (#1284)
  • [enhancement] Metadata for every rule (#1311)
  • [enhancement] typedef rule is more flexible about the location of typedefs for arrow functions (#1176)
  • [enhancement] Failure messages are clearer and more consistent for many rules (#1303, #1307, #1309)
  • [bugfix] no-consecutive-blank-lines now handles lines with only whitespace correctly (#1249)
  • [bugfix] Correctly load .json config files that have a BOM (#1338)

Thanks to our contributors!

  • @allannienhuis
  • @arnaudvalle
  • @bencoveney
  • @chrismbarr
  • @corydeppen
  • @HamletDRC
  • @JoshuaKGoldberg
  • @timbrown81
  • @tomduncalf
  • @YuichiNukiyama

v3.11.0

  • Stable release containing changes from the last dev release (v3.11.0-dev.0)

v3.11.0-dev.0

  • [new-rule] linebreak-style rule (#123)
  • [new-rule] no-mergeable-namespace rule (#843)
  • [enhancement] Add built-in configurations (#1261)
  • [enhancement] New vso formatter (#1281)
  • [new-rule-option] ignore-interfaces option for semicolon rule (#1233)
  • [bugfix] no-default-export rule handles more default export cases (#1241)

Thanks to our contributors!

  • @cgwrench
  • @HamletDRC
  • @lijunle
  • @paldepind
  • @patsissons
  • @schmuli
  • @YuichiNukiyama

v3.10.2

  • Stable release containing changes from the last dev release (v3.10.0-dev.2)

v3.10.0-dev.2

  • [bugfix] member-ordering rule doesn't crash on methods in class expressions (#1252)
  • [bugfix] ban rule handles chained methods appropriately (#1234)

Thanks to our contributors!

  • @marines

v3.10.1

  • Stable release containing changes from the last dev release (v3.10.0-dev.1)

v3.10.0-dev.1

  • [bugfix] member-ordering rule doesn't crash on methods in object literals (#1243)

v3.10.0

  • Stable release containing changes from the last dev release (v3.10.0-dev.0)

v3.10.0-dev.0

  • [new-rule] new-parens rule (#1177)
  • [new-rule] no-default-export rule (#1182)
  • [new-rule-option] order: ... option for member-ordering rule (#1208)
  • [new-rule-option] "ignore-for-loop" option for one-variable-per-declaration rule (#1204)
  • [enhancement] "no-this-in-function-in-method" option renamed to "check-function-in-method" (#1203)
  • [bugfix] semicolon rule checks export statements (#1155)

Thanks to our contributors!

  • @chrismbarr
  • @HamletDRC
  • @larshp
  • @patsissons
  • @YuichiNukiyama

v3.9.0

  • Stable release containing changes from the last dev release (v3.9.0-dev.0)

v3.9.0-dev.0

  • [new-rule] no-namespace rule (#1133)
  • [new-rule] one-variable-per-declaration rule (#525)
  • [new-rule-option] "ignore-params" option for no-inferrable-types rule (#1190)
  • [new-rule-option] "no-this-in-function-in-method" option for no-invalid-this rule (#1179)
  • [enhancement] Single line enable/disable comments (#144)
  • [enhancement] Resolve extends packages relative to location of configuration file (#1171)
  • [enhancement] Linter class will throw an error if configuration is of an invalid type (#1167)
  • [bugfix] use-isnan allows assaignments to NaN (#1054)
  • [bugfix] no-unreachable handles allows hoisted type aliases (#564)
  • [bugfix] member-ordering rule now checks constructors (#1158)
  • [bugfix] --test CLI command works correctly with specifiying custom rules (#1195)

Thanks to our contributors!

  • @abierbaum
  • @HamletDRC
  • @inthemill
  • @janslow
  • @JoshuaKGoldberg
  • @mprobst
  • @patsissions
  • @YuichiNukiyama

v3.8.1

  • Stable release containing changes from the last dev release (v3.8.0-dev.1)

v3.8.0-dev.1

  • [bugfix] Allow JS directives at the start of constructors, getters, and setters (#1159)
  • [bugfix] Remove accidentally included performance profiles from published NPM artifact (#1160)

v3.8.0

  • Stable release containing changes from the last dev release (v3.8.0-dev.0)

v3.8.0-dev.0

  • [new-rule] no-invalid-this rule (#1105)
  • [new-rule] use-isnan rule (#1054)
  • [new-rule] no-reference rule (#1139)
  • [new-rule-option] "allow-pascal-case" option for variable-name rule (#1079)
  • [enhancement] Comments now allowed in tslint.json files (#1129)
  • [enhancement] Smarter trailing-comma behavior (#1122)
  • [enhancement] semicolon rule more lenient with arrow-function class members (#1076)
  • [enhancement] Allow enabling/disabling rules with // comments (#1134)
  • [enhancement] New checkstyle formatter (#250)
  • [enhancement] Clearer message for no-var-keyword rule (#1124)
  • [bugfix] Loaded configurations are not cached (#1128)
  • [bugfix] Allow JS directives at the start of class methods (#1144)

Thanks to our contributors!

  • @AndyMoreland
  • @chrismbarr
  • @HamletDRC
  • @JoshuaKGoldberg
  • @sshev
  • @unional

v3.7.4

  • Stable release containing changes from the last dev release (v3.7.0-dev.5)

v3.7.0-dev.5

  • [bugfix] Allow JS directives in namespaces (#1115)

v3.7.3

  • Stable release containing changes from the last dev release (v3.7.0-dev.4)

v3.7.0-dev.4

  • [bugfix] Downgrade findup-sync dependency (#1108)

v3.7.2

  • Stable release containing changes from the last dev release (v3.7.0-dev.3)

v3.7.0-dev.3

  • [bugfix] findConfigurationPath always returns an absolute path (#1093)
  • [bugfix] Update findup-sync dependency (#1080)
  • [bugfix] declare global no longer triggers no-internal-module rule (#1069)
  • [bugfix] Valid JS directives no longer trigger no-unused-expression rule (#1050)

v3.7.1

  • Stable release containing changes from the last dev release

v3.7.0-dev.2

  • [bugfix] Improve handling of paths provided via the -c CLI option (#1083)

v3.7.0

  • Stable release containing changes from the last dev release

v3.7.0-dev.1

  • [enhancement] extends field for tslint.json files (#997)
  • [enhancement] --force CLI option (#1059)
  • [enhancement] Improve how Linter class handles configurations with a rulesDirectory field (#1035)
  • [new-rule] no-angle-bracket-type-assertion rule (#639)
  • [new-rule-option] "allow-undefined-check" option for triple-equals rule (#602)
  • [new-rule-option] "always-prefix" and "never-prefix" option for interface-name rule (#512)

Thanks to our contributors!

  • @Arnavion
  • @chrismbarr
  • @ChrisPearce
  • @JoshuaKGoldberg
  • @patsissonso
  • @sasidhar
  • @unional
  • @vvakame

v3.6.0

  • Stable release containing changes from the last dev release

v3.6.0-dev.1

  • [enhancement] Add --exclude CLI option (#915)
  • [bugfix] Fix no-shadowed-variable rule handling of standalone blocks (#1021)
  • [deprecation] Configuration through package.json files (#1020)
  • [API] Export additional configuration methods from top-level "tslint" module (#1009)

Thanks to our contributors!

  • @blakeembrey
  • @hamhut1066
  • @meowtec

v3.5.0

  • Stable release containing changes from the last dev release

v3.5.0-dev.1

  • [new-rule-option] "ignore-pattern" option for no-unused-variable rule (#314)
  • [bugfix] Fix occassional crash in no-string-literal rule (#906)
  • [enhancement] Tweak behavior of member-ordering rule with regards to arrow function types in interfaces (#226)

Thanks to our contributors!

  • @arusakov
  • @Pajn

v3.4.0

  • Stable release containing changes from the last two dev releases

v3.4.0-dev.2

  • [new-rule-option] "arrow-parameter" option for typedef rule (#333)
  • [new-rule-option] "never" option for semicolon rule (#363)
  • [new-rule-option] "onespace" setting for typedef-whitespace rule (#888)
  • [new-rule-option] typedef-whitespace rule can now check spacing on right side of typdef colon (#888)
  • [enhancement] member-ordering rule treats arrow functions as methods (#226)
  • [bugfix] Handle spaces before typedefs correctly in typedef-whitespace rule (#955)
  • [bugfix] label-position rule now allows labels on for-of loops (#959)

Thanks to our contributors!

  • @b0r3as
  • @ChaseMoskal
  • @Pajn
  • @pe8ter
  • @tomduncalf

v3.4.0-dev.1

  • [enhancement] Revamped testing system (#620)
    • Writing tests for rules is now much simpler with a linter DSL. See exisitng tests in test/rules/**/*.ts.lint for examples.
  • [enhancement] New msbuild formatter (#947)
  • [bugfix] Fix handling of multiline literals in trailing-comma rule (#856)
  • [bugfix] one-line rule correctly checks space between catch and opening brace (#925)
  • [bugfix] one-line rule correctly checks multiline variable declarations (#935)
  • [new-rule-option] New option check-finally for one-line rule (#925)
  • BREAKING CHANGES
    • [bugfix] Report error when a rule in the config file is not found (#598)

Thanks to our contributors!

  • @mmv
  • @pe8ter

v3.3.0

  • [bugfix] Tweak TSLint build so TSLint works with typescript@next (#926)

v3.3.0-dev.1

  • [bugfix] Correctly handle more than one custom rules directory (#928)

v3.2.2

  • Stable release containing changes from the last dev release

v3.2.2-dev.1

  • [enhancement] Throw an error if a path to a directory of custom rules is invalid (#910)
  • [new-rule-option] "jsx-single" and "jsx-double" options for quotemark rule (#673)
  • [bugfix] Handle paths to directories of custom rules more accurately
  • [bugfix] no-unused-expression rule handles await statements correctly (#887)

v3.2.1

  • Stable release containing changes from the last dev release

v3.2.1-dev.1

  • [enhancement] automatically generate a tslint.json file with new --init CLI command (#717)
  • [bugfix] no-var-keyword rule detects the use of var in all types of for loops (#855)

v3.2.0

  • Stable release containing changes from last two dev releases

v3.2.0-dev.2

  • [bugfix] formatters are now exported correctly to work with TS 1.8 (#863)

v3.2.0-dev.1

  • [bugfix] fixed bug in how custom rules directories are registered (#844)
  • [enhancement] better support for globs in CLI (#827)
  • [new-rule] no-null-keyword rule (#722)

v3.1.1

  • Bump TypeScript peer dependency to >= 1.7.3 due to const enum incompatibility (#832)

v3.1.0

  • [bugfix] build with TS v1.7.3 to fix null pointer exception (#832)
  • [bugfix] fixed false positive in no-require-imports rule (#816)

v3.1.0-dev.1

  • [bugfix] fixed no-shadowed-variable false positives when handling destructuring in function params (#727)
  • [enhancement] rulesDirectory in tslint.json now supports multiple file paths (#795)

v3.0.0

  • [bugfix] member-access rule now handles object literals and get/set accessors properly (#801)
    • New rule options: check-accessor and check-constructor
  • All the changes from the following releases, including some breaking changes:
    • 3.0.0-dev.3
    • 3.0.0-dev.2
    • 3.0.0-dev.1
    • 2.6.0-dev.2
    • 2.6.0-dev.1

v3.0.0-dev.3

  • TypeScript is now a peerDependency (#791)
  • [bugfix] no-unused-variable rule with react option works with self-closing JSX tags (#776)
  • [bugfix] use-strict bugfix (#544)

v3.0.0-dev.2

  • [new-rule-option] "react" option for no-unused-variable rule (#698, #725)
  • [bugfix] Fix how Linter is exported from "tslint" module (#760)
  • [bugfix] no-use-before-declare rule doesn't crash on uncompilable code (#763)

v3.0.0-dev.1

  • BREAKING CHANGES
    • Rearchitect TSLint to use external modules instead of merged namespaces (#726)
      • Dependencies need to be handled differently now by custom rules and formatters
      • See the PR for full details about this change
    • no-trailing-comma rule removed, it is replaced by the trailing-comma rule (#687)
    • Rename sort-object-literal-keys rule to object-literal-sort-keys (#304, #537)
    • Lint.abstract() has been removed (#700)
  • [new-rule] trailing-comma rule (#557, #687)
  • [new-rule-option] "ban-keywords" option for variable-name rule (#735, #748)
  • [bugfix] typedef rule now handles for-of loops correctly (#743)
  • [bugfix] Handle tslint.json utf-8 files which have a BOM correctly (#90)

v2.6.0-dev.2

  • Upgrade TypeScript compiler to v1.7.0-dev.20151003
  • [bugfix] no-unused-expression rule now handles yield expressions properly (#706)

v2.6.0-dev.1

  • Upgrade TypeScript compiler to v1.7.0-dev.20150924

v2.5.1

  • [new-rule] no-inferrable-types rule (#676)
  • [new-rule-option] "avoid-escape" option for quotemark rule (#543)
  • [bugfix] type declaration for tslint external module #686
  • [enhancement] AbstractRule and AbstractFormatter are now abstract classes (#631)
    • Note: Lint.abstract() is now deprecated

v2.5.0

  • Use TypeScript compiler v1.6.2
  • [bugfixes] #637, #642, #650, #652
  • [bugfixes] fix various false positives in no-unused-variable rule (#570, #613, #663)
  • Update project setup for latest VSCode (#662)

v2.5.0-beta

  • Use TypeScript compiler v1.6.0-beta
  • [bugfix] Fix no-internal-module false positives on nested namespaces (#600)
  • [docs] Add documentation for sort-object-literal-keys rule

v2.5.0-dev.5

  • Upgrade TypeScript compiler to v1.7.0-dev.20150828
  • [bugfix] Handle .tsx files appropriately (#597, #558)

v2.5.0-dev.4

  • Upgrade TypeScript compiler to v1.6.0-dev.20150825

v2.5.0-dev.3

  • Upgrade TypeScript compiler to v1.6.0-dev.20150821

v2.5.0-dev.2

  • Upgrade TypeScript compiler to v1.6.0-dev.20150811
  • [bug] fix whitespace false positive in JSX elements (#559)

v2.5.0-dev.1

  • Upgrade TypeScript compiler to v1.6.0-dev.20150805
  • [enhancement] Support .tsx syntax (#490)

v2.4.5

  • [bugfix] fix false positives on no-shadowed-variable rule (#500)
  • [enhancement] add allow-trailing-underscore option to variable-name rule

v2.4.4

  • [bugfix] remove "typescript" block from package.json (#606)

v2.4.3

  • [new-rule] no-conditional-assignment (#507)
  • [new-rule] member-access (#552)
  • [new-rule] no-internal-module (#513)
  • [bugfix] small fixes to sample.tslint.json (#545)
  • [bugfix] fix README docs for quotemark and indent (#523)
  • [enhancement] update findup-sync and underscore.string dependencies
  • [enhancement] add "typescript" field to package.json (#560)
  • [enhancement] small improvements to CLI help text
  • [enhancement] expose raw failures array in the JS API (#477)

v2.4.2

  • [bug] remove npm-shrinkwrap.json from the published package

v2.4.0

  • Upgraded Typescript compiler to 1.5.3
  • [bugs] #332, #493, #509, #483
  • [bug] fix error message in no-var-keyword rule
  • [enhancement] CI tests are now run on node v0.12 in addition to v0.10
  • BREAKING
    • -f option removed from CLI

v2.3.1-beta

  • [bugs] #137 #434 #451 #456
  • [new-rule] no-require-imports disallows require() style imports
  • [new-rule] no-shadowed-variable moves over shadowed variable checking from no-duplicate-variable into its own rule
  • BREAKING
    • no-duplicate-variable now only checks for duplicates within the same block scope; enable no-shadowed-variable to get duplicate-variable checking across block scopes
  • [enhancement] no-duplicate-variable, no-shadowed-variable, and no-use-before-declare now support ES6 destructuring
  • [enhancement] tslint CLI now uses a default configuration if no config file is found

v2.3.0-beta

  • [bugs] #401 #367 #324 #352
  • [new-rule] no-var-keyword disallows var in favor of let and const
  • [new-rule] sort-object-literal-keys forces object-literal keys to be sorted alphabetically
  • Add support for ES6 destructuring and module syntax (affects variable-name, no-use-before-declare, whitespace and no-unused-variable)
  • Add support for ES6 for-of and spread operator syntax
  • Use tsconfig.json & JSCS in the build system

v2.2.0-beta

  • Upgraded Typescript compiler to 1.5.0-beta
  • BREAKING CHANGES
    • due to changes to the typescript compiler API, old custom rules may no longer work and may need to be rewritten
    • the JSON formatter's line and character positions are now back to being 0-indexed instead of 1-indexed
  • [bugs] #328 #334 #319 #351 #365 #254
  • [bug] fixes for tslint behavior around template strings (fixes #357, #349, #332, and more)
  • [new-rule] align rule now enforces vertical alignment on parameters, arguments, and statements
  • [new-rule] switch-default enforces a default case in switch statements
  • [feature] no-duplicate-variable rule now additionally checks if function parameters have been shadowed
  • Additional fixes to existing rules to work as before with the typescript 1.5 compiler

v2.1.1

  • [bugs] #292 #293 #295 #301 #302
  • Some internal refactoring
  • Added Windows CI testing (appveyor)

v2.1.0

  • Fix crash on Windows

v2.0.1

  • Upgraded Typescript compiler to 1.4
  • BREAKING CHANGES
    • typedef rule options were modified:
      • index-signature removed as no longer necessary
      • property-signature renamed to property-declaration
      • variable-declarator renamed to variable-declaration
      • member-variable-declarator renamed to member-variable-declaration
    • typedef-whitespace rule options were modified:
      • catch-clause was removed as invalid
      • further options were added, see readme for more details
    • due to changes to the typescript compiler API, old custom rules may no longer work and may need to be rewritten
    • the JSON formatter's line and character positions are now 1-indexed instead of 0-indexed

v1.2.0

  • [bug] #245

v1.0.1

  • [bug] #238

v1.0.0

  • upgrade TypeScript compiler to 1.3
  • BREAKING CHANGES
    • all error messages now start with a lower-case character and do not end with a period
    • all rule options are consistent in nomenclature. The typedef and typedef-whitespace rules now take in hyphenated options
    • unused-variables rule cannot find unused private variables defined in the constructor due to a bug in 1.3 compiler
    • indent rule has changed to only check for tabs or spaces and not enforce indentation levels

v0.4.12

  • multiple files with -f on cli
  • config file search starts with input file

v0.4.11

  • [bugs] #136, #163
  • internal refactors

v0.4.10

  • [bugs] #138, #145, #146, #148

v0.4.9

  • [new-rule] no-any disallows all uses of any
  • [bug] /* tslint:disable */ now disables semicolon rule as well
  • [bug] delete operator no longer results in a false positive for no-unused-expression

v0.4.8

  • [new-rule] no-var-requires disallows require statements not part of an import statement
  • [new-rule] typedef rule also checks for member variables
  • [bug] no-unused-variable no longer triggers false positives for class members labeled only static
  • [bug] no-unused-expression no longer triggers false positives for "use strict"; expressions
  • [bug] use-strict works correctly on function declarations
  • [bug] config file is now discoverable from other drives on Windows

v0.4.7

  • [new-rule] added no-unused-expression rule which disallows unused expression statements
  • [feature] the check-operator option for the whitespace rule now checks whitespace around the => token
  • [bug] no-use-before-declare-rule no longer triggers false positives for member variables of classes used before the class is declared
  • [bug] semicolon at end of file no longer triggers false positives for whitespace rule
  • [bug] hoisted functions no longer cause false positives for the no-unreachable rule
  • [bug] the rule loader no longer transforms/ignores the leading and trailing underscores and dashes of rule names in the config file
  • [bug] export import statements no longer false positives for no-unused-variable-rule
  • [docs] added documentation for creating custom rules and formatters
  • [docs] added sample tslint.json file, under docs/sample.tslint.json

v0.4.6

  • [build] migrated build to use grunt-ts instead of grunt-typescript
  • [feature] package.json now contains a tslintConfig paramater to allow users to specify the location of the configuration file there
  • [feature] tslint now searches for the configuration file in the user's home directory if not found in the current path
  • [bug] unbraced conditionals no longer cause false positives for the no-unreachable rule

v0.4.5

  • [feature] no-unused-variable no longer checks parameters by default. Parameters are now only checked if the check-parameters option is set.
  • [bug] no-unused-variable parameter check no longer fails on variable argument parameters (like ...args) and on cases where the parameters are broken up by newlines.

v0.4.4

  • [bug] no-unused-variable validates function parameters and constructor methods
  • [bug] no-empty and no-trailing-comma rules handle empty objects

v0.4.3

  • [new-rule] no-unused-variable
  • [new-rule] no-trailing-comma
  • [new-rule] no-use-before-declare
  • [feature] support --version in CLI
  • [feature] expose rule names to custom formatters
  • [feature] add verbose formatter
  • [bug] no-empty allows constructors with member declaration parameters
  • [bug] CLI supports --help
  • [bug] max-line-length allows CRLF endings
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