Visitar URL original
fix(bugfix): bound check before array access by babel-bot · Pull Request #18457 · babel/babel · GitHub
Skip to content

fix(bugfix): bound check before array access #18457

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
nicolo-ribaudo merged 1 commit into from
Oct 30, 2026
+5 −1
Merged

fix(bugfix): bound check before array access #18457

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
5 changes: 4 additions & 1 deletion packages/babel-plugin-bugfix-safari-rest-destructuring-rhs-array/src/util.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -35,7 +35,10 @@ export function shouldTransform(
): NodePath<t.Expression> | false {
const elementPaths = path.get("elements");
const elementPathsLength = elementPaths.length;
if (elementPaths[elementPathsLength - 1].isRestElement()) {
if (
elementPathsLength > 0 &&
elementPaths[elementPathsLength - 1].isRestElement()
) {
const { parentPath } = path;
const rhsPath = parentPath.isVariableDeclarator()
? parentPath.get("init")
Expand Down
1 change: 1 addition & 0 deletions packages/babel-plugin-bugfix-safari-rest-destructuring-rhs-array/test/util.skip-bundled.js
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -61,6 +61,7 @@ describe("shouldTransform", () => {
"var a = [0, 42]; var [_, ...rest] = a",
"var [_, ...rest] = [0].concat(42)",
"function foo([a, ...rest] = [1, 2]) { return rest }",
"[] = [];",
];

const negativeNestedCases = [
Expand Down
Loading