tweak: add a test

Author: bobzhang

jscomp/frontend/ast_payload.ml

@@ -85,7 +85,7 @@ let raw_as_string_exp_exn
     Bs_flow_ast_utils.check_flow_errors ~loc ~offset:(Bs_flow_ast_utils.flow_deli_offset deli) (match kind with 
         | Raw_re 
         | Raw_exp ->  
-          let (_loc,e),errors =  (Parser_flow.parse_expression (Parser_env.init_env None str) false) in 
+          let (_loc,e),errors =  Parser_flow.parse_expression (Parser_env.init_env None str) false in 
           if kind = Raw_re then 
             (match e with 
             | Literal {value = RegExp _} -> ()

jscomp/test/build.ninja

@@ -334,6 +334,7 @@ o test/gpr_4519_test.cmi test/gpr_4519_test.cmj : cc test/gpr_4519_test.ml | tes
 o test/gpr_459_test.cmi test/gpr_459_test.cmj : cc test/gpr_459_test.ml | test/mt.cmj $stdlib
 o test/gpr_4639_test.cmi test/gpr_4639_test.cmj : cc test/gpr_4639_test.ml | $stdlib
 o test/gpr_4924_test.cmi test/gpr_4924_test.cmj : cc test/gpr_4924_test.ml | $stdlib
+o test/gpr_4931.cmi test/gpr_4931.cmj : cc test/gpr_4931.ml | $stdlib
 o test/gpr_627_test.cmi test/gpr_627_test.cmj : cc test/gpr_627_test.ml | test/mt.cmj $stdlib
 o test/gpr_658.cmi test/gpr_658.cmj : cc test/gpr_658.ml | $stdlib
 o test/gpr_858_test.cmi test/gpr_858_test.cmj : cc test/gpr_858_test.ml | $stdlib

jscomp/test/gpr_4931.js

@@ -0,0 +1,9 @@
+'use strict';
+
+
+if (import.meta.hot){
+  console.log('es6')
+}
+;
+
+/*  Not a pure module */

jscomp/test/gpr_4931.ml

@@ -0,0 +1,11 @@
+
+[@@@config {
+  flags = [|"-w";"-103"|]
+}]
+
+
+[%%raw{|
+if (import.meta.hot){
+  console.log('es6')
+}
+|}]