From ff8facef64ffe115936cfc154b35ec08359524f8 Mon Sep 17 00:00:00 2001
From: HeYunfei <i.heyunfei@gmail.com>
Date: Wed, 11 Jan 2023 10:58:25 +0800
Subject: [PATCH] fix(es/parser): Allow parsing `import.meta` as an expression
 (#6783)

---
 crates/swc_ecma_parser/src/lib.rs             |  6 +++++-
 .../swc_ecma_parser/src/parser/expr/tests.rs  | 20 +++++++++++++++++--
 2 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/crates/swc_ecma_parser/src/lib.rs b/crates/swc_ecma_parser/src/lib.rs
index b523edfabb70..3ad332067ea0 100644
--- a/crates/swc_ecma_parser/src/lib.rs
+++ b/crates/swc_ecma_parser/src/lib.rs
@@ -442,7 +442,11 @@ macro_rules! expose {
     };
 }
 
-expose!(parse_file_as_expr, Box<Expr>, |p| { p.parse_expr() });
+expose!(parse_file_as_expr, Box<Expr>, |p| {
+    // This allow to parse `import.meta`
+    p.input().ctx.can_be_module = true;
+    p.parse_expr()
+});
 expose!(parse_file_as_module, Module, |p| { p.parse_module() });
 expose!(parse_file_as_script, Script, |p| { p.parse_script() });
 expose!(parse_file_as_program, Program, |p| { p.parse_program() });
diff --git a/crates/swc_ecma_parser/src/parser/expr/tests.rs b/crates/swc_ecma_parser/src/parser/expr/tests.rs
index 5e650e87fb12..f98f473ed637 100644
--- a/crates/swc_ecma_parser/src/parser/expr/tests.rs
+++ b/crates/swc_ecma_parser/src/parser/expr/tests.rs
@@ -2,12 +2,12 @@ extern crate test;
 
 use std::hint::black_box;
 
-use swc_common::DUMMY_SP as span;
+use swc_common::{FileName, SourceMap, DUMMY_SP as span};
 use swc_ecma_visit::assert_eq_ignore_span;
 use test::Bencher;
 
 use super::*;
-use crate::EsConfig;
+use crate::{parse_file_as_expr, EsConfig};
 
 fn syntax() -> Syntax {
     Syntax::Es(EsConfig {
@@ -519,6 +519,22 @@ fn issue_5947() {
     );
 }
 
+#[test]
+fn issue_6781() {
+    let cm = SourceMap::default();
+    let fm = cm.new_source_file(FileName::Anon, "import.meta.env".to_string());
+    let mut errors = vec![];
+    let expr = parse_file_as_expr(
+        &fm,
+        Default::default(),
+        Default::default(),
+        None,
+        &mut errors,
+    );
+    assert!(expr.is_ok());
+    assert!(errors.is_empty());
+}
+
 #[bench]
 fn bench_new_expr_ts(b: &mut Bencher) {
     bench_parser(