From 8bb1341ff4be1e5849e569676204784b2470dbe1 Mon Sep 17 00:00:00 2001
From: fisker Cheung <lionkay@gmail.com>
Date: Thu, 15 Jan 2026 10:24:52 +0800
Subject: [PATCH] Update flow parse options (#18641)

---
 scripts/sync-flow-tests.cjs   |  6 +++++-
 src/language-js/parse/flow.js | 31 +++++++++++++++++++------------
 2 files changed, 24 insertions(+), 13 deletions(-)

diff --git a/scripts/sync-flow-tests.cjs b/scripts/sync-flow-tests.cjs
index bd75abf8d..af3a77447 100644
--- a/scripts/sync-flow-tests.cjs
+++ b/scripts/sync-flow-tests.cjs
@@ -14,8 +14,12 @@ function tryParse(file, content) {
   const ast = flowParser.parse(content, {
     comments: false,
     enums: true,
+    match: true,
+    components: true,
+    // assert_operator: true,
     esproposal_decorators: true,
-    esproposal_export_star_as: true,
+    pattern_matching: true,
+    records: true,
   });
 
   if (ast.errors.length > 0) {
diff --git a/src/language-js/parse/flow.js b/src/language-js/parse/flow.js
index 527e16e40..b33c75045 100644
--- a/src/language-js/parse/flow.js
+++ b/src/language-js/parse/flow.js
@@ -6,27 +6,34 @@ import createParser from "./utilities/create-parser.js";
 // https://github.com/facebook/flow/tree/main/packages/flow-parser#options
 // Keep this sync with `/scripts/sync-flow-test.js`
 const parseOptions = {
-  // `all_comments` (boolean, default `true`) - include a list of all comments from the whole program
-  // all_comments: true,
+  /* Basic options */
+  // `types` (boolean, default true) - enable parsing of Flow types
+  // types: true,
+  // `use_strict` (boolean, default false) - treat the file as strict, without needing a "use strict" directive
+  // use_strict: false,
   // `comments` (boolean, default `true`) - attach comments to AST nodes (`leadingComments` and `trailingComments`)
   comments: false,
+  // `all_comments` (boolean, default `true`) - include a list of all comments from the whole program
+  // all_comments: true,
+  // `tokens` (boolean, default `false`) - include a list of all parsed tokens in a top-level `tokens` property
+  // tokens: false,
+
+  /* Language features */
+  // `enums` (boolean, default `false`) - enable parsing of enums https://flow.org/en/docs/enums/
+  enums: true,
+  // `match` (boolean, default `false`) - enable parsing of match expressions and match statements https://flow.org/en/docs/match/
+  match: true,
   // `components` (boolean, default `false`) - enable parsing of Flow component syntax
   components: true,
-  // `enums` (boolean, default `false`) - enable parsing of Flow enums
-  enums: true,
+  // TODO: Support it
+  // `assert_operator` (boolean, default `false`) - enable parsing of the assert operator
+  // assert_operator: true,
   // `esproposal_decorators` (boolean, default `false`) - enable parsing of decorators
   esproposal_decorators: true,
-  // `esproposal_export_star_as` (boolean, default `false`) - enable parsing of `export * as` syntax
-  esproposal_export_star_as: true,
   // Undocumented
   pattern_matching: true,
+  // Undocumented
   records: true,
-  // `types` (boolean, default `true`) - enable parsing of Flow types
-  // types: true,
-  // `use_strict` (boolean, default `false`) - treat the file as strict, without needing a "use strict" directive
-  // use_strict: false,
-  // `tokens` (boolean, default `false`) - include a list of all parsed tokens in a top-level `tokens` property
-  tokens: false,
 };
 
 function createParseError(error) {