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support limited ufuzz testing for export (#4693)

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fixes #4692
This commit is contained in:
Alex Lam S.L
2021-02-26 20:56:34 +00:00
committed by GitHub
parent ac26993b5a
commit ba4a771bbc
7 changed files with 166 additions and 47 deletions
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19
lib/output.js
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@@ -664,7 +664,9 @@ function OutputStream(options) {
function needs_parens_function(output) {
if (!output.has_parens() && first_in_statement(output)) return true;
var p = output.parent();
// export default (function() {})()
// export default (function foo() {});
if (this.name && p instanceof AST_ExportDefault) return true;
// export default (function() {})(foo);
if (p && p.TYPE == "Call" && output.parent(1) instanceof AST_ExportDefault) return true;
if (output.option("webkit") && p instanceof AST_PropAccess && p.expression === this) return true;
if (output.option("wrap_iife") && p instanceof AST_Call && p.expression === this) return true;
@@ -725,6 +727,8 @@ function OutputStream(options) {
// { [(1, 2)]: foo } = bar
// { 1: (2, foo) } = bar
|| p instanceof AST_DestructuredKeyVal
// export default (foo, bar)
|| p instanceof AST_ExportDefault
// for (foo of (bar, baz));
|| p instanceof AST_ForOf
// { [(1, 2)]: 3 }[2] ---> 3
@@ -1032,9 +1036,16 @@ function OutputStream(options) {
output.space();
output.print("default");
output.space();
this.body.print(output);
if (this.body instanceof AST_Class) return;
if (this.body instanceof AST_Lambda && !is_arrow(this.body)) return;
var body = this.body;
body.print(output);
if (body instanceof AST_ClassExpression) {
if (!body.name) return;
}
if (body instanceof AST_DefClass) return;
if (body instanceof AST_LambdaDefinition) return;
if (body instanceof AST_LambdaExpression) {
if (!body.name && !is_arrow(body)) return;
}
output.semicolon();
});
DEFPRINT(AST_ExportForeign, function(output) {