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handle non-ES5 node types in inline (#2648)

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fixes #2647
This commit is contained in:
Alex Lam S.L
2017-12-25 17:25:38 +08:00
committed by GitHub
parent 01bb08b553
commit 49ce573971
2 changed files with 96 additions and 2 deletions
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6
lib/compress.js
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@@ -4277,9 +4277,11 @@ merge(Compressor.prototype, {
} else if (scope instanceof AST_Catch) {
catches[scope.argname.name] = true;
}
} while (!(scope instanceof AST_Scope));
} while (!(scope instanceof AST_Scope) || scope instanceof AST_Arrow);
var safe_to_inject = compressor.toplevel.vars || !(scope instanceof AST_Toplevel);
return all(fn.argnames, function(arg) {
if (arg instanceof AST_DefaultAssign) return arg.left.__unused;
if (arg instanceof AST_Destructuring) return false;
if (arg instanceof AST_Expansion) return arg.expression.__unused;
return arg.__unused
|| safe_to_inject
@@ -4295,7 +4297,7 @@ merge(Compressor.prototype, {
for (var len = fn.argnames.length, i = len; --i >= 0;) {
var name = fn.argnames[i];
var value = self.args[i];
if (name.__unused || name instanceof AST_Expansion) {
if (name.__unused || !name.name) {
if (value || expressions.length) {
expressions.unshift(value || make_node(AST_Undefined, self));
}