typescript-eslint · bradzacher · Nov 27, 2023 · Nov 21, 2023 · bradzacher · Nov 21, 2023
diff --git a/.yarn/patches/typescript-npm-5.3.1-rc-6c4278ffd3.patch b/.yarn/patches/typescript-npm-5.3.1-rc-6c4278ffd3.patch
diff --git a/.yarn/patches/typescript-npm-5.4.0-dev.20231117-78a04a34c5.patch b/.yarn/patches/typescript-npm-5.4.0-dev.20231117-78a04a34c5.patch
diff --git a/docs/maintenance/Dependency_Version_Upgrades.mdx b/docs/maintenance/Dependency_Version_Upgrades.mdx
@@ -51,7 +51,7 @@ See [chore: drop support for ESLint v6](https://github.com/typescript-eslint/typ
 The typescript-eslint repository contains three kinds of version ranges for Node:
 
 - [`.github/workflows/ci.yml`](https://github.com/typescript-eslint/typescript-eslint/blob/main/.github/workflows/ci.yml)'s `PRIMARY_NODE_VERSION`: Set to the highest Node version we support
-- `node-version`: Set to a tuple of our [lowest, highest] supported versions for our unit tests in CI
+- `node-version`: Set to a tuple of our `[lowest, highest]` supported versions for our unit tests in CI
 - `engines` field in all `package.json`s: explicitly lists all supported Node ranges
 
 Change those numbers accordingly when adding support for a new Node version or removing support for an old Node version.
@@ -97,8 +97,6 @@ We generally start the process of supporting a new TypeScript version just after
    - In the root `package.json`, change the `devDependency` on `typescript` to `~X.Y.3`
    - Rename and update `patches/typescript*` to the new TypeScript version
    - Any other changes made necessary due to changes in TypeScript between the RC version and stable version
-   - Update the supported version range in [Users > Dependency Versions](../users/Dependency_Versions.mdx)
-1. Update [Users > Dependency Versions > TypeScript](../users/Dependency_Versions.mdx#typescript)
 1. Send a PR that updates this documentation page to point to your newer issues and PRs
    - Also update any of these steps if you go with a different process
 

diff --git a/docs/users/Dependency_Versions.mdx b/docs/users/Dependency_Versions.mdx
@@ -7,7 +7,7 @@ import packageJson from '../../package.json';
 
 ## ESLint
 
-> The version range of ESLint currently supported is `^6.0.0 || ^7.0.0 || ^8.0.0`.
+> The version range of ESLint currently supported is `^7.0.0 || ^8.0.0`.
 
 We generally support at least the latest two major versions of ESLint.
 

diff --git a/package.json b/package.json
@@ -114,7 +114,7 @@
     "ts-node": "10.7.0",
     "tslint": "^6.1.3",
     "tsx": "^3.12.7",
-    "typescript": ">=4.3.5 <5.4.0 || 5.3.0-beta || 5.3.1-rc || 5.4.0-dev.20231117"
+    "typescript": ">=4.3.5 <5.4.0"
   },
   "resolutions": {
     "@jest/create-cache-key-function": "^29",
@@ -141,7 +141,7 @@
     "pretty-format": "^29",
     "react-split-pane@^0.1.92": "patch:react-split-pane@npm%3A0.1.92#./.yarn/patches/react-split-pane-npm-0.1.92-93dbf51dff.patch",
     "tsx": "^3.12.7",
-    "typescript": "patch:typescript@npm%3A5.4.0-dev.20231117#./.yarn/patches/typescript-npm-5.4.0-dev.20231117-78a04a34c5.patch"
+    "typescript": "5.3.2"
   },
   "packageManager": "yarn@3.7.0"
 }
diff --git a/packages/repo-tools/src/generate-lib.ts b/packages/repo-tools/src/generate-lib.ts
@@ -211,7 +211,7 @@ async function main(): Promise<void> {
 
     // import and spread all of the references
     const imports = [
-      "import { ImplicitLibVariableOptions } from '../variable';",
+      "import type { ImplicitLibVariableOptions } from '../variable';",
     ];
     for (const reference of references) {
       const name = sanitize(reference);
@@ -245,9 +245,9 @@ async function main(): Promise<void> {
 
     if (requiredBaseImports.size > 0) {
       imports.push(
-        `import {${Array.from(requiredBaseImports).join(
-          ',',
-        )}} from './${BASE_CONFIG_MODULE_NAME}';`,
+        `import {${Array.from(requiredBaseImports)
+          .sort()
+          .join(',')}} from './${BASE_CONFIG_MODULE_NAME}';`,
       );
     }
 

diff --git a/packages/typescript-estree/src/node-utils.ts b/packages/typescript-estree/src/node-utils.ts
@@ -191,6 +191,7 @@ export function isComment(node: ts.Node): boolean {
  * @returns is JSDoc comment
  */
 function isJSDocComment(node: ts.Node): node is ts.JSDoc {
+  // eslint-disable-next-line deprecation/deprecation -- SyntaxKind.JSDoc was only added in TS4.7 so we can't use it yet
   return node.kind === SyntaxKind.JSDocComment;
 }
 

diff --git a/packages/typescript-estree/src/parseSettings/warnAboutTSVersion.ts b/packages/typescript-estree/src/parseSettings/warnAboutTSVersion.ts
@@ -6,13 +6,13 @@ import type { ParseSettings } from './index';
  * This needs to be kept in sync with /docs/users/Versioning.mdx
  * in the typescript-eslint monorepo
  */
-const SUPPORTED_TYPESCRIPT_VERSIONS = '>=4.3.5 <5.3.0';
+const SUPPORTED_TYPESCRIPT_VERSIONS = '>=4.3.5 <5.4.0';
 
 /*
  * The semver package will ignore prerelease ranges, and we don't want to explicitly document every one
  * List them all separately here, so we can automatically create the full string
  */
-const SUPPORTED_PRERELEASE_RANGES: string[] = ['5.3.1-rc'];
+const SUPPORTED_PRERELEASE_RANGES: string[] = [];
 const ACTIVE_TYPESCRIPT_VERSION = ts.version;
 const isRunningSupportedTypeScriptVersion = semver.satisfies(
   ACTIVE_TYPESCRIPT_VERSION,

diff --git a/packages/typescript-estree/src/ts-estree/ts-nodes.ts b/packages/typescript-estree/src/ts-estree/ts-nodes.ts
@@ -4,9 +4,9 @@ import type * as ts from 'typescript';
 // Eg: https://github.com/typescript-eslint/typescript-eslint/issues/2388, https://github.com/typescript-eslint/typescript-eslint/issues/2784
 /* eslint-disable @typescript-eslint/ban-ts-comment, @typescript-eslint/prefer-ts-expect-error, @typescript-eslint/no-empty-interface */
 declare module 'typescript' {
-  // @ts-ignore - added in TS 4.5
+  /** @ts-ignore - added in TS 4.5, deprecated and converted to a type-alias in TS 5.3 */
   export interface AssertClause extends ts.Node {}
-  // @ts-ignore - added in TS 4.5
+  /** @ts-ignore - added in TS 4.5, deprecated and converted to a type-alias in TS 5.3 */
   export interface AssertEntry extends ts.Node {}
   // added in TS 4.9
   export interface SatisfiesExpression extends ts.Node {}
@@ -25,6 +25,10 @@ export type TSNode =
   | ts.Identifier
   | ts.ImportAttribute
   | ts.ImportAttributes
+  /* eslint-disable-next-line deprecation/deprecation, @typescript-eslint/no-duplicate-type-constituents -- intentional for old TS versions */
+  | ts.AssertClause
+  /* eslint-disable-next-line deprecation/deprecation, @typescript-eslint/no-duplicate-type-constituents -- intentional for old TS versions */
+  | ts.AssertEntry
   | ts.PrivateIdentifier
   | ts.QualifiedName
   | ts.ComputedPropertyName

diff --git a/packages/typescript-estree/tsconfig.build.json b/packages/typescript-estree/tsconfig.build.json
@@ -4,7 +4,8 @@
     "composite": true,
     "outDir": "./dist",
     "rootDir": "./src",
-    "resolveJsonModule": true
+    "resolveJsonModule": true,
+    "removeComments": false
   },
   "include": ["src", "typings"],
   "references": [

diff --git a/packages/typescript-estree/typings/typescript.d.ts b/packages/typescript-estree/typings/typescript.d.ts
@@ -10,4 +10,48 @@ declare module 'typescript' {
   interface JSDocContainer {
     jsDoc?: JSDoc[];
   }
+
+  // add back the deprecated properties that were removed in newer TS versions
+  // make sure these properties are marked as @ deprecated so they're flagged
+  // by the `deprecation/deprecation` lint rule
+
+  interface PropertySignature {
+    /** @deprecated removed in 5.0 but we want to keep it for backwards compatibility checks! */
+    readonly initializer?: Expression | undefined;
+  }
+  interface PropertyAssignment {
+    /** @deprecated removed in 5.0 but we want to keep it for backwards compatibility checks! */
+    readonly questionToken?: QuestionToken | undefined;
+    /** @deprecated removed in 5.0 but we want to keep it for backwards compatibility checks! */
+    readonly exclamationToken?: ExclamationToken | undefined;
+  }
+  interface ShorthandPropertyAssignment {
+    /** @deprecated removed in 5.0 but we want to keep it for backwards compatibility checks! */
+    readonly modifiers?: NodeArray<Modifier> | undefined;
+    /** @deprecated removed in 5.0 but we want to keep it for backwards compatibility checks! */
+    readonly questionToken?: QuestionToken | undefined;
+    /** @deprecated removed in 5.0 but we want to keep it for backwards compatibility checks! */
+    readonly exclamationToken?: ExclamationToken | undefined;
+  }
+  interface FunctionTypeNode {
+    /** @deprecated removed in 5.0 but we want to keep it for backwards compatibility checks! */
+    readonly modifiers?: NodeArray<Modifier> | undefined;
+  }
+
+  /**
+   * @deprecated don't use this directly as it does not exist pre-4.8; instead use getDecorators from `src/getModifiers.ts`.
+   */
+  function getDecorators(node: HasDecorators): readonly Decorator[] | undefined;
+  /**
+   * @deprecated don't use this directly as it does not exist pre-4.8; instead use getModifiers from `src/getModifiers.ts`.
+   */
+  function getModifiers(node: HasModifiers): readonly Modifier[] | undefined;
+  /**
+   * @deprecated don't use this directly as it does not exist pre-4.8; instead use getModifiers from `src/getModifiers.ts`.
+   */
+  function canHaveModifiers(node: Node): node is HasModifiers;
+  /**
+   * @deprecated don't use this directly as it does not exist pre-4.8; instead use getDecorators from `src/getModifiers.ts`.
+   */
+  function canHaveDecorators(node: Node): node is HasDecorators;
 }