Handle from_clause in export type statement (#208)

Author: kraftwerk28

common/corpus/types.txt

@@ -338,11 +338,22 @@ Type-only Export
 =======================================
 
 export type { UserType }
+export type { UserType } from "./User.js";
+export type { A, B, C as D } from 'mymodule';
 
 ---
 
 (program
-  (export_statement (export_clause (export_specifier (identifier)))))
+  (export_statement (export_clause (export_specifier (identifier))))
+  (export_statement
+    (export_clause (export_specifier (identifier)))
+    (string (string_fragment)))
+  (export_statement
+    (export_clause
+      (export_specifier (identifier))
+      (export_specifier (identifier))
+      (export_specifier (identifier) (identifier)))
+    (string (string_fragment))))
 
 =======================================
 Flow Export Types

common/define-grammar.js

@@ -273,7 +273,13 @@ module.exports = function defineGrammar(dialect) {
 
       export_statement: ($, previous) => choice(
         previous,
-        seq('export', 'type', $.export_clause, $._semicolon),
+        seq(
+          'export',
+          'type',
+          $.export_clause,
+          optional($._from_clause),
+          $._semicolon
+        ),
         seq('export', '=', $.expression, $._semicolon),
         seq('export', 'as', 'namespace', $.identifier, $._semicolon),
       ),

tsx/src/grammar.json

@@ -208,6 +208,18 @@
               "type": "SYMBOL",
               "name": "export_clause"
             },
+            {
+              "type": "CHOICE",
+              "members": [
+                {
+                  "type": "SYMBOL",
+                  "name": "_from_clause"
+                },
+                {
+                  "type": "BLANK"
+                }
+              ]
+            },
             {
               "type": "SYMBOL",
               "name": "_semicolon"