v5.4.0

⭐️ Non-breaking API changes

• The --type-check CLI option now only enables checking for compiler errors before linting. It is no longer required to enable rules that use the type checker -- only need to supply --project now.

🎉 New rules, options, and fixers

• [new-rule] switch-final-break (#2804)
• [new-rule] use-default-type-parameter (#2253)
• [new-rule] binary-expression-operand-order (#2805)
• [new-rule-option] ban new options format: allows to specify an optional explanation message for function bans, banning nested methods and using a wildcard for object of a method ban (#2547)
• [new-rule-option] no-duplicate-variable adds check-parameters option to check if variable has the same name as a parameter (#2597)
• [new-rule-option] curly: "as-needed" option (#2842)
• [new-rule-option] no-unbound-method add option "ignore-static" (#2751)
• [new-rule-option] strict-boolean-expressions adds allow-boolean-or-undefined (#2820)
• [new-fixer] object-literal-shorthand can fix longhand methods (#2558)

🛠 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