Merge 6ec0c03 into e1ed323

package.json

@@ -107,7 +107,8 @@
     "minimatch": "^3.0.4",
     "object.values": "^1.1.0",
     "read-pkg-up": "^2.0.0",
-    "resolve": "^1.12.0"
+    "resolve": "^1.12.0",
+    "tsconfig-paths": "^3.9.0"
   },
   "nyc": {
     "require": [

src/ExportMap.js

@@ -13,6 +13,8 @@ import isIgnored, { hasValidExtension } from 'eslint-module-utils/ignore'
 import { hashObject } from 'eslint-module-utils/hash'
 import * as unambiguous from 'eslint-module-utils/unambiguous'
 
+import { tsConfigLoader } from 'tsconfig-paths/lib/tsconfig-loader'
+
 const log = debug('eslint-plugin-import:ExportMap')
 
 const exportCache = new Map()
@@ -445,6 +447,18 @@ ExportMap.parse = function (path, content, context) {
 
   const source = makeSourceCode(content, ast)
 
+  function isEsModuleInterop() {
+    const tsConfig = tsConfigLoader({
+      cwd: context.parserOptions.tsconfigRootDir || process.cwd(),
+      getEnv: (key) => process.env[key],
+    })
+    if (tsConfig.tsConfigPath !== undefined) {
+      const json = fs.readFileSync(tsConfig.tsConfigPath)
+      return JSON.parse(json).compilerOptions.esModuleInterop
+    }
+    return false
+  }
+
   ast.body.forEach(function (n) {
 
     if (n.type === 'ExportDefaultDeclaration') {
@@ -553,6 +567,9 @@ ExportMap.parse = function (path, content, context) {
         m.namespace.set('default', captureDoc(source, docStyleParsers, n))
         return
       }
+      if (isEsModuleInterop()) {
+        m.namespace.set('default', {})
+      }
       exportedDecls.forEach((decl) => {
         if (decl.type === 'TSModuleDeclaration') {
           if (decl.body && decl.body.type === 'TSModuleDeclaration') {

tests/files/typescript-export-assign-default-namespace/index.d.ts

@@ -0,0 +1,3 @@
+export = FooBar;
+
+declare namespace FooBar {}

tests/files/typescript-export-assign-default-namespace/tsconfig.json

@@ -0,0 +1,5 @@
+{
+    "compilerOptions": {
+        "esModuleInterop": true
+    }
+}

tests/src/rules/default.js

@@ -1,3 +1,4 @@
+import path from 'path'
 import { test, SYNTAX_CASES, getTSParsers } from '../utils'
 import { RuleTester } from 'eslint'
 
@@ -189,6 +190,17 @@ context('TypeScript', function () {
               'import/resolver': { 'eslint-import-resolver-typescript': true },
             },
           }),
+          test({
+            code: `import React from "./typescript-export-assign-default-namespace"`,
+            parser: parser,
+            settings: {
+              'import/parsers': { [parser]: ['.ts'] },
+              'import/resolver': { 'eslint-import-resolver-typescript': true },
+            },
+            parserOptions: {
+              tsconfigRootDir: path.resolve(__dirname, '../../files/typescript-export-assign-default-namespace/'),
+            },
+          }),
         ],
 
         invalid: [
@@ -201,6 +213,15 @@ context('TypeScript', function () {
             },
             errors: ['No default export found in imported module "./typescript".'],
           }),
+          test({
+            code: `import React from "./typescript-export-assign-default-namespace"`,
+            parser: parser,
+            settings: {
+              'import/parsers': { [parser]: ['.ts'] },
+              'import/resolver': { 'eslint-import-resolver-typescript': true },
+            },
+            errors: ['No default export found in imported module "./typescript-export-assign-default-namespace".'],
+          }),
         ],
       })
     })