upgrade AST<->ESTree translation

fixes mishoo#968
alexlamsl · Apr 25, 2021 · 43d5aba · 43d5aba
1 parent a1a212f
commit 43d5aba
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Showing 8 changed files with 772 additions and 158 deletions.
diff --git a/bin/uglifyjs b/bin/uglifyjs
@@ -313,9 +313,11 @@ function run() {
             if (options.parse.acorn) {
                 files = convert_ast(function(toplevel, name) {
                     return require("acorn").parse(files[name], {
+                        ecmaVersion: "latest",
                         locations: true,
                         program: toplevel,
-                        sourceFile: name
+                        sourceFile: name,
+                        sourceType: "module",
                     });
                 });
             } else if (options.parse.spidermonkey) {

diff --git a/lib/compress.js b/lib/compress.js
@@ -6562,6 +6562,10 @@ merge(Compressor.prototype, {
                 }
                 return insert_statements(body, node, in_list);
             }
+            if (node instanceof AST_Import) {
+                if (node.properties && node.properties == 0) node.properties = null;
+                return node;
+            }
             if (node instanceof AST_Sequence) {
                 if (node.expressions.length > 1) return;
                 return maintain_this_binding(compressor, tt.parent(), node, node.expressions[0]);