Merge branch 'main' into dont-scc-for-each-file

.nycrc

@@ -14,6 +14,7 @@
 		"resolvers/*/test",
 		"scripts",
 		"memo-parser",
-		"lib"
+		"lib",
+		"examples"
 	]
 }

CHANGELOG.md

@@ -12,6 +12,10 @@ This change log adheres to standards from [Keep a CHANGELOG](https://keepachange
 ### Fixed
 - `ExportMap` / flat config: include `languageOptions` in context ([#3052], thanks [@michaelfaith])
 - [`no-named-as-default`]: Allow using an identifier if the export is both a named and a default export ([#3032], thanks [@akwodkiewicz])
+- [`export`]: False positive for exported overloaded functions in TS ([#3065], thanks [@liuxingbaoyu])
+
+### Changed
+- [Docs] [`no-relative-packages`]: fix typo ([#3066], thanks [@joshuaobrien])
 
 ## [2.30.0] - 2024-09-02
 
@@ -1136,6 +1140,8 @@ for info on changes for earlier releases.
 
 [`memo-parser`]: ./memo-parser/README.md
 
+[#3066]: https://github.com/import-js/eslint-plugin-import/pull/3066
+[#3065]: https://github.com/import-js/eslint-plugin-import/pull/3065
 [#3052]: https://github.com/import-js/eslint-plugin-import/pull/3052
 [#3043]: https://github.com/import-js/eslint-plugin-import/pull/3043
 [#3036]: https://github.com/import-js/eslint-plugin-import/pull/3036
@@ -1840,6 +1846,7 @@ for info on changes for earlier releases.
 [@johnthagen]: https://github.com/johnthagen
 [@jonboiser]: https://github.com/jonboiser
 [@josh]: https://github.com/josh
+[@joshuaobrien]: https://github.com/joshuaobrien
 [@JounQin]: https://github.com/JounQin
 [@jquense]: https://github.com/jquense
 [@jseminck]: https://github.com/jseminck
@@ -1870,6 +1877,7 @@ for info on changes for earlier releases.
 [@lilling]: https://github.com/lilling
 [@ljharb]: https://github.com/ljharb
 [@ljqx]: https://github.com/ljqx
+[@liuxingbaoyu]: https://github.com/liuxingbaoyu
 [@lo1tuma]: https://github.com/lo1tuma
 [@loganfsmyth]: https://github.com/loganfsmyth
 [@luczsoma]: https://github.com/luczsoma

docs/rules/no-relative-packages.md

@@ -6,8 +6,7 @@
 
 Use this rule to prevent importing packages through relative paths.
 
-It's useful in Yarn/Lerna workspaces, were it's possible to import a sibling
-package using `../package` relative path, while direct `package` is the correct one.
+It's useful in Yarn/Lerna workspaces, where it's possible to import a sibling package using `../package` relative path, while direct `package` is the correct one.
 
 ## Examples
 

examples/flat/eslint.config.mjs

@@ -20,6 +20,7 @@ export default [
       'import/no-dynamic-require': 'warn',
       'import/no-nodejs-modules': 'warn',
       'import/no-unused-modules': ['warn', { unusedExports: true }],
+      'import/no-cycle': 'warn',
     },
   },
 ];

examples/flat/src/depth-zero.js

@@ -0,0 +1,3 @@
+import { foo } from "./es6/depth-one-dynamic";
+
+foo();

examples/flat/src/es6/depth-one-dynamic.js

@@ -0,0 +1,3 @@
+export function foo() {}
+
+export const bar = () => import("../depth-zero").then(({foo}) => foo);

examples/legacy/.eslintrc.cjs

@@ -20,5 +20,6 @@ module.exports = {
     'import/no-dynamic-require': 'warn',
     'import/no-nodejs-modules': 'warn',
     'import/no-unused-modules': ['warn', { unusedExports: true }],
+    'import/no-cycle': 'warn',
   },
 };

examples/legacy/src/depth-zero.js

@@ -0,0 +1,3 @@
+import { foo } from "./es6/depth-one-dynamic";
+
+foo();

examples/legacy/src/es6/depth-one-dynamic.js

@@ -0,0 +1,3 @@
+export function foo() {}
+
+export const bar = () => import("../depth-zero").then(({ foo }) => foo);

src/rules/consistent-type-specifier-style.js

@@ -6,6 +6,12 @@ function isComma(token) {
   return token.type === 'Punctuator' && token.value === ',';
 }
 
+/**
+ * @param {import('eslint').Rule.Fix[]} fixes
+ * @param {import('eslint').Rule.RuleFixer} fixer
+ * @param {import('eslint').SourceCode.SourceCode} sourceCode
+ * @param {(ImportSpecifier | ImportDefaultSpecifier | ImportNamespaceSpecifier)[]} specifiers
+ * */
 function removeSpecifiers(fixes, fixer, sourceCode, specifiers) {
   for (const specifier of specifiers) {
     // remove the trailing comma
@@ -17,6 +23,7 @@ function removeSpecifiers(fixes, fixer, sourceCode, specifiers) {
   }
 }
 
+/** @type {(node: import('estree').Node, sourceCode: import('eslint').SourceCode.SourceCode, specifiers: (ImportSpecifier | ImportNamespaceSpecifier)[], kind: 'type' | 'typeof') => string} */
 function getImportText(
   node,
   sourceCode,
@@ -38,6 +45,7 @@ function getImportText(
   return `import ${kind} {${names.join(', ')}} from ${sourceString};`;
 }
 
+/** @type {import('eslint').Rule.RuleModule} */
 module.exports = {
   meta: {
     type: 'suggestion',
@@ -102,6 +110,7 @@ module.exports = {
 
     // prefer-top-level
     return {
+      /** @param {import('estree').ImportDeclaration} node */
       ImportDeclaration(node) {
         if (
           // already top-level is valid
@@ -120,9 +129,13 @@ module.exports = {
           return;
         }
 
+        /** @type {typeof node.specifiers} */
         const typeSpecifiers = [];
+        /** @type {typeof node.specifiers} */
         const typeofSpecifiers = [];
+        /** @type {typeof node.specifiers} */
         const valueSpecifiers = [];
+        /** @type {typeof node.specifiers[number]} */
         let defaultSpecifier = null;
         for (const specifier of node.specifiers) {
           if (specifier.type === 'ImportDefaultSpecifier') {
@@ -144,6 +157,7 @@ module.exports = {
         const newImports = `${typeImport}\n${typeofImport}`.trim();
 
         if (typeSpecifiers.length + typeofSpecifiers.length === node.specifiers.length) {
+          /** @type {('type' | 'typeof')[]} */
           // all specifiers have inline specifiers - so we replace the entire import
           const kind = [].concat(
             typeSpecifiers.length > 0 ? 'type' : [],
@@ -162,14 +176,15 @@ module.exports = {
           });
         } else {
           // remove specific specifiers and insert new imports for them
-          for (const specifier of typeSpecifiers.concat(typeofSpecifiers)) {
+          typeSpecifiers.concat(typeofSpecifiers).forEach((specifier) => {
             context.report({
               node: specifier,
               message: 'Prefer using a top-level {{kind}}-only import instead of inline {{kind}} specifiers.',
               data: {
                 kind: specifier.importKind,
               },
               fix(fixer) {
+                /** @type {import('eslint').Rule.Fix[]} */
                 const fixes = [];
 
                 // if there are no value specifiers, then the other report fixer will be called, not this one
@@ -215,7 +230,7 @@ module.exports = {
                 );
               },
             });
-          }
+          });
         }
       },
     };

src/rules/export.js

@@ -2,7 +2,6 @@ import ExportMapBuilder from '../exportMap/builder';
 import recursivePatternCapture from '../exportMap/patternCapture';
 import docsUrl from '../docsUrl';
 import includes from 'array-includes';
-import flatMap from 'array.prototype.flatmap';
 
 /*
 Notes on TypeScript namespaces aka TSModuleDeclaration:
@@ -27,42 +26,25 @@ const rootProgram = 'root';
 const tsTypePrefix = 'type:';
 
 /**
- * Detect function overloads like:
+ * remove function overloads like:
  * ```ts
  * export function foo(a: number);
  * export function foo(a: string);
- * export function foo(a: number|string) { return a; }
  * ```
  * @param {Set<Object>} nodes
- * @returns {boolean}
  */
-function isTypescriptFunctionOverloads(nodes) {
-  const nodesArr = Array.from(nodes);
-
-  const idents = flatMap(
-    nodesArr,
-    (node) => node.declaration && (
-      node.declaration.type === 'TSDeclareFunction' // eslint 6+
-      || node.declaration.type === 'TSEmptyBodyFunctionDeclaration' // eslint 4-5
-    )
-      ? node.declaration.id.name
-      : [],
-  );
-  if (new Set(idents).size !== idents.length) {
-    return true;
-  }
-
-  const types = new Set(nodesArr.map((node) => node.parent.type));
-  if (!types.has('TSDeclareFunction')) {
-    return false;
-  }
-  if (types.size === 1) {
-    return true;
-  }
-  if (types.size === 2 && types.has('FunctionDeclaration')) {
-    return true;
-  }
-  return false;
+function removeTypescriptFunctionOverloads(nodes) {
+  nodes.forEach((node) => {
+    const declType = node.type === 'ExportDefaultDeclaration' ? node.declaration.type : node.parent.type;
+    if (
+      // eslint 6+
+      declType === 'TSDeclareFunction'
+      // eslint 4-5
+      || declType === 'TSEmptyBodyFunctionDeclaration'
+    ) {
+      nodes.delete(node);
+    }
+  });
 }
 
 /**
@@ -227,9 +209,11 @@ module.exports = {
       'Program:exit'() {
         for (const [, named] of namespace) {
           for (const [name, nodes] of named) {
+            removeTypescriptFunctionOverloads(nodes);
+
             if (nodes.size <= 1) { continue; }
 
-            if (isTypescriptFunctionOverloads(nodes) || isTypescriptNamespaceMerging(nodes)) { continue; }
+            if (isTypescriptNamespaceMerging(nodes)) { continue; }
 
             for (const node of nodes) {
               if (shouldSkipTypescriptNamespace(node, nodes)) { continue; }

src/rules/no-cycle.js

@@ -152,9 +152,9 @@ module.exports = {
           */
           if (path === myPath && toTraverse.length > 0) { return true; }
           if (route.length + 1 < maxDepth) {
-            for (const { source } of toTraverse) {
+            toTraverse.forEach(({ source }) => {
               untraversed.push({ mget: getter, route: route.concat(source) });
-            }
+            });
           }
         }
       }