@typescript-eslint/type-utils

See the announcement blog post for a friendly description of all changes and CHANGELOG.md for a full organized list of them. 🎉

What's Changed

• Made BaseNode.parent non-optional

• experimental-utils: Console.warn on import of experimental-utils

• Remove partial type-information program

• deprecated

  eslint-plugin: Deprecate no-type-alias

• typescript-estree: Wrap import = declaration in an export node

• typescript-estree: Add type checker wrapper APIs to ParserServicesWithTypeInformation

• Replace tsutils with ts-api-tools

• eslint-plugin: Rework configs: recommended, strict, stylistic; -type-checked

• Remove experimental-utils

• removed

  ast-spec: Remove more invalid properties

• eslint-plugin: Add config that disables type-aware linting

• typescript-estree: Account for namespace nesting in AST conversion

• Add package.json exports for public packages

• Bumped ts-api-utils to 0.0.39

• Rename typeParameters to typeArguments where needed

• removed

  typescript-estree: Remove optionality from AST boolean properties

• typescript-estree: Added allowInvalidAST option to not throw on invalid tokens

• Update exports field in package.json files

• Improve error location

• typescript-estree: Throw errors on interface with implements

• typescript-estree: Strict class heritage clauses check

• typescript-estree: Check for illegal decorators on function declarations

• typescript-estree: Throw errors for object methods without function bodies

• typescript-estree: Fix error handling on ImportExpression

• removed

  Remove moduleResolver API

• deprecated

  typescript-estree: Warn on deprecated AST property accesses

• eslint-plugin: Allow parser@^6.0.0

• typescript-estree: Check modifiers on every node

• typescript-estree: Throw errors when abstract property has initializer

• typescript-estree: Allow writing to deprecated node properties

• eslint-plugin: [prefer-readonly-parameter-types] added an optional type allowlist

• typescript-estree: Forbid override on non-constructor function/methods

• typescript-estree: Forbid members in Mapped Type

• type-utils: Checking of type aliases' type names by typeMatchesSpecifier

• breaking

  Bump minimum TS to 4.3.5

• type-utils: Fixed TypeOrValueSpecifier not accounting for scoped DT packages

• Improve rule schemas, add test to validate schemas, add tooling to generate schema types

• Correct handling of additionalProperties in object schemas

• Add new package rule-tester

• Remove RuleTester in /utils in favour of the new /rule-tester package

• Drop support for node v14 and test against node v20

• eslint-plugin: [restrict-plus-operands] change checkCompoundAssignments to skipCompoundAssignments

• type-utils: File variant of TypeOrValueSpecifier uses canonical filenames instead of lowercasing

• Fix illegal decorator check

• Fork json schema types for better compat with ESLint rule validation

• eslint-plugin: Apply final v6 changes to configs

• typescript-estree: Remove parseWithNodeMaps

• eslint-plugin: Final final config changes for v6

• eslint-plugin: [prefer-optional-chain] handle cases where the first operands are unrelated to the rest of the chain and add type info

• type-utils: Treat intrinsic types as if they are from lib and never match error types