swc-project/swc
1
1
Fork 0
mirror of https://github.com/swc-project/swc.git synced 2024-11-24 10:12:42 +03:00
Code Issues Actions 2 Packages Projects Releases Wiki Activity

fix(es/compat): Fix destructuring of an empty array (#6314)

Browse Source
This commit is contained in:
Alexander Akait 2022-11-02 10:06:52 +03:00 committed by GitHub
parent 06a664a1f4
commit 3bea6f7248
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 27 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
crates/swc_ecma_transforms_compat/src/es2015/destructuring.rs
View File

@ -160,8 +160,9 @@ impl AssignFolder {
if is_literal(&init) {
match *init {
Expr::Array(arr)
if elems.len() == arr.elems.len()
|| (elems.len() < arr.elems.len() && has_rest_pat(&elems)) =>
if !elems.is_empty()
&& (elems.len() == arr.elems.len()
|| (elems.len() < arr.elems.len() && has_rest_pat(&elems))) =>
{
let mut arr_elems = Some(arr.elems.into_iter());
elems.into_iter().for_each(|p| match p {

24
crates/swc_ecma_transforms_compat/tests/es2015_destructuring.rs
View File

@ -2261,3 +2261,27 @@ test!(
"let [x] = [,];",
"let x;"
);
test!(
syntax(),
|_| tr(),
issue_6304,
"let [] = [];",
"let ref = [];"
);
test!(
syntax(),
|_| tr(),
issue_6304_1,
"let [] = [,];",
"let ref = [,];"
);
test!(
syntax(),
|_| tr(),
issue_6304_2,
"let [] = [...[1, 2, 3]];",
"let ref = [...[1, 2, 3]];"
);