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fix corner cases with export default (#4673)

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This commit is contained in:
Alex Lam S.L
2021-02-21 05:01:56 +00:00
committed by GitHub
parent bfe3a8b516
commit b726e364c1
5 changed files with 96 additions and 40 deletions
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8
lib/ast.js
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@@ -1060,7 +1060,7 @@ var AST_ExportDeclaration = DEFNODE("ExportDeclaration", "body", {
var AST_ExportDefault = DEFNODE("ExportDefault", "body", {
$documentation: "An `export default` statement",
$propdoc: {
body: "[AST_Node] an expression node (should not be instanceof AST_Statement)",
body: "[AST_Node] the default export",
},
walk: function(visitor) {
var node = this;
@@ -1069,7 +1069,11 @@ var AST_ExportDefault = DEFNODE("ExportDefault", "body", {
});
},
_validate: function() {
must_be_expression(this, "body");
if (this.body instanceof AST_Lambda && this.body.name) {
if (!(this.body instanceof AST_LambdaDefinition)) throw new Error("body must be AST_LambdaDefinition");
} else {
must_be_expression(this, "body");
}
},
}, AST_Statement);