feature(import/default): support default export in TSExportAssignment.

package.json

@@ -100,7 +100,8 @@
     "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 { loadConfig } from 'tsconfig-paths'
+
 const log = debug('eslint-plugin-import:ExportMap')
 
 const exportCache = new Map()
@@ -445,6 +447,14 @@ ExportMap.parse = function (path, content, context) {
 
   const source = makeSourceCode(content, ast)
 
+  function isEsModuleInterop() {
+    const configLoaderResult = loadConfig(context.parserOptions.tsconfigRootDir || process.cwd())
+    if (configLoaderResult === 'success') {
+      return configLoaderResult.esModuleInterop
+    }
+    return false
+  }
+
   ast.body.forEach(function (n) {
 
     if (n.type === 'ExportDefaultDeclaration') {
@@ -530,6 +540,9 @@ ExportMap.parse = function (path, content, context) {
 
     // This doesn't declare anything, but changes what's being exported.
     if (n.type === 'TSExportAssignment') {
+      if (isEsModuleInterop()) {
+        m.namespace.set('default', {})
+      }
       const moduleDecls = ast.body.filter((bodyNode) =>
         bodyNode.type === 'TSModuleDeclaration' && bodyNode.id.name === n.expression.name
       )