diff options
| -rw-r--r-- | lib/compress.js | 9 | ||||
| -rw-r--r-- | test/compress/classes.js | 24 |
2 files changed, 33 insertions, 0 deletions
diff --git a/lib/compress.js b/lib/compress.js index 93023e19..263bad01 100644 --- a/lib/compress.js +++ b/lib/compress.js @@ -5743,7 +5743,10 @@ merge(Compressor.prototype, { if (prop.key instanceof AST_Node) prop.key.walk(tw); if (!prop.value) return; if (is_export || prop instanceof AST_ClassField && prop.static) { + var save_scope = scope; + scope = node; prop.value.walk(tw); + scope = save_scope; } else { initializations.add(def.id, prop.value); } @@ -5793,6 +5796,12 @@ merge(Compressor.prototype, { assignments.add(def.id, node); return true; } + } else if (node instanceof AST_This && scope instanceof AST_DefClass) { + var def = scope.name.definition(); + if (!(def.id in in_use_ids)) { + in_use_ids[def.id] = true; + in_use.push(def); + } } return scan_ref_scoped(node, descend, true); }); diff --git a/test/compress/classes.js b/test/compress/classes.js index 390ae525..78536094 100644 --- a/test/compress/classes.js +++ b/test/compress/classes.js @@ -572,3 +572,27 @@ computed_key_generator: { expect_stdout: "PASS" node_version: ">=4" } + +issue_4681: { + options = { + unused: true, + } + input: { + console.log(function(a) { + class A { + static p = a = this; + } + return typeof a; + }()); + } + expect: { + console.log(function(a) { + class A { + static p = a = this; + } + return typeof a; + }()); + } + expect_stdout: "function" + node_version: ">=12" +} |