feat: remove moduleResolver API (#6609)

docs/architecture/Parser.mdx

@@ -43,7 +43,6 @@ interface ParserOptions {
   jsxFragmentName?: string | null;
   jsxPragma?: string | null;
   lib?: string[];
-  moduleResolver?: string;
   program?: import('typescript').Program;
   project?: string | string[] | true;
   projectFolderIgnoreList?: string[];
@@ -150,25 +149,6 @@ Specifies the TypeScript `lib`s that are available. This is used by the scope an
 
 If you provide `parserOptions.project`, you do not need to set this, as it will automatically detected from the compiler.
 
-### `moduleResolver`
-
-> Default `undefined`.
-
-This option allows you to provide a custom module resolution. The value should point to a JS file that default exports (`export default`, or `module.exports =`, or `export =`) a file with the following interface:
-
-```ts
-interface ModuleResolver {
-  version: 1;
-  resolveModuleNames(
-    moduleNames: string[],
-    containingFile: string,
-    reusedNames: string[] | undefined,
-    redirectedReference: ts.ResolvedProjectReference | undefined,
-    options: ts.CompilerOptions,
-  ): (ts.ResolvedModule | undefined)[];
-}
-```
-
 ### `program`
 
 > Default `undefined`.

docs/architecture/TypeScript-ESTree.mdx

@@ -241,11 +241,6 @@ interface ParseAndGenerateServicesOptions extends ParseOptions {
      */
     glob?: number | 'Infinity';
   };
-
-  /**
-   * Path to a file exporting a custom `ModuleResolver`.
-   */
-  moduleResolver?: string;
 }
 
 interface ParserServices {
@@ -290,23 +285,6 @@ const { ast, services } = parseAndGenerateServices(code, {
 });
 ```
 
-##### `ModuleResolver`
-
-The `moduleResolver` option allows you to specify the path to a module with a custom module resolver implementation. The module is expected to adhere to the following interface:
-
-```ts
-interface ModuleResolver {
-  version: 1;
-  resolveModuleNames(
-    moduleNames: string[],
-    containingFile: string,
-    reusedNames: string[] | undefined,
-    redirectedReference: ts.ResolvedProjectReference | undefined,
-    options: ts.CompilerOptions,
-  ): (ts.ResolvedModule | undefined)[];
-}
-```
-
 #### `parseWithNodeMaps(code, options)`
 
 Parses the given string of code with the options provided and returns both the ESTree-compatible AST as well as the node maps.

packages/types/src/parser-options.ts

@@ -59,7 +59,6 @@ interface ParserOptions {
   tokens?: boolean;
   tsconfigRootDir?: string;
   warnOnUnsupportedTypeScriptVersion?: boolean;
-  moduleResolver?: string;
   cacheLifetime?: {
     glob?: CacheDurationSeconds;
   };

packages/typescript-estree/src/create-program/createDefaultProgram.ts

@@ -4,10 +4,7 @@ import * as ts from 'typescript';
 
 import type { ParseSettings } from '../parseSettings';
 import type { ASTAndDefiniteProgram } from './shared';
-import {
-  createDefaultCompilerOptionsFromExtra,
-  getModuleResolver,
-} from './shared';
+import { createDefaultCompilerOptionsFromExtra } from './shared';
 
 const log = debug('typescript-eslint:typescript-estree:createDefaultProgram');
 
@@ -47,12 +44,6 @@ function createDefaultProgram(
     /* setParentNodes */ true,
   );
 
-  if (parseSettings.moduleResolver) {
-    compilerHost.resolveModuleNames = getModuleResolver(
-      parseSettings.moduleResolver,
-    ).resolveModuleNames;
-  }
-
   const oldReadFile = compilerHost.readFile;
   compilerHost.readFile = (fileName: string): string | undefined =>
     path.normalize(fileName) === path.normalize(parseSettings.filePath)

packages/typescript-estree/src/create-program/getWatchProgramsForProjects.ts

@@ -10,7 +10,6 @@ import {
   createDefaultCompilerOptionsFromExtra,
   createHash,
   getCanonicalFileName,
-  getModuleResolver,
 } from './shared';
 import type { WatchCompilerHostOfConfigFile } from './WatchCompilerHostOfConfigFile';
 
@@ -268,12 +267,6 @@ function createWatchProgram(
     /*reportWatchStatus*/ () => {},
   ) as WatchCompilerHostOfConfigFile<ts.BuilderProgram>;
 
-  if (parseSettings.moduleResolver) {
-    watchCompilerHost.resolveModuleNames = getModuleResolver(
-      parseSettings.moduleResolver,
-    ).resolveModuleNames;
-  }
-
   // ensure readFile reads the code being linted instead of the copy on disk
   const oldReadFile = watchCompilerHost.readFile;
   watchCompilerHost.readFile = (filePathIn, encoding): string | undefined => {

packages/typescript-estree/src/create-program/shared.ts

@@ -2,7 +2,6 @@ import path from 'path';
 import type { Program } from 'typescript';
 import * as ts from 'typescript';
 
-import type { ModuleResolver } from '../parser-options';
 import type { ParseSettings } from '../parseSettings';
 
 interface ASTAndNoProgram {
@@ -112,23 +111,6 @@ function getAstFromProgram(
   return ast && { ast, program: currentProgram };
 }
 
-function getModuleResolver(moduleResolverPath: string): ModuleResolver {
-  let moduleResolver: ModuleResolver;
-
-  try {
-    moduleResolver = require(moduleResolverPath) as ModuleResolver;
-  } catch (error) {
-    const errorLines = [
-      'Could not find the provided parserOptions.moduleResolver.',
-      'Hint: use an absolute path if you are not in control over where the ESLint instance runs.',
-    ];
-
-    throw new Error(errorLines.join('\n'));
-  }
-
-  return moduleResolver;
-}
-
 /**
  * Hash content for compare content.
  * @param content hashed contend
@@ -154,5 +136,4 @@ export {
   ensureAbsolutePath,
   getCanonicalFileName,
   getAstFromProgram,
-  getModuleResolver,
 };

packages/typescript-estree/src/parseSettings/createParseSettings.ts

@@ -68,7 +68,6 @@ export function createParseSettings(
         : options.loggerFn === false
         ? (): void => {}
         : console.log, // eslint-disable-line no-console
-    moduleResolver: options.moduleResolver ?? '',
     preserveNodeMaps: options.preserveNodeMaps !== false,
     programs: Array.isArray(options.programs) ? options.programs : null,
     projects: [],

packages/typescript-estree/src/parseSettings/index.ts

@@ -93,11 +93,6 @@ export interface MutableParseSettings {
    */
   log: (message: string) => void;
 
-  /**
-   * Path for a module resolver to use for the compiler host's `resolveModuleNames`.
-   */
-  moduleResolver: string;
-
   /**
    * Whether two-way AST node maps are preserved during the AST conversion process.
    */

packages/typescript-estree/src/parser-options.ts

@@ -188,11 +188,6 @@ interface ParseAndGenerateServicesOptions extends ParseOptions {
      */
     glob?: CacheDurationSeconds;
   };
-
-  /**
-   * Path to a file exporting a custom `ModuleResolver`.
-   */
-  moduleResolver?: string;
 }
 
 export type TSESTreeOptions = ParseAndGenerateServicesOptions;
@@ -228,14 +223,3 @@ export interface ParserServicesWithoutTypeInformation
 export type ParserServices =
   | ParserServicesWithTypeInformation
   | ParserServicesWithoutTypeInformation;
-
-export interface ModuleResolver {
-  version: 1;
-  resolveModuleNames(
-    moduleNames: string[],
-    containingFile: string,
-    reusedNames: string[] | undefined,
-    redirectedReference: ts.ResolvedProjectReference | undefined,
-    options: ts.CompilerOptions,
-  ): (ts.ResolvedModule | undefined)[];
-}