diff options
Diffstat (limited to 'lib/compress.js')
| -rw-r--r-- | lib/compress.js | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/lib/compress.js b/lib/compress.js index 0e698804..101fdb4e 100644 --- a/lib/compress.js +++ b/lib/compress.js @@ -940,6 +940,8 @@ merge(Compressor.prototype, { }); if (!node.name) return; var d = node.name.definition(); + var parent = tw.parent(); + if (parent instanceof AST_ExportDeclaration || parent instanceof AST_ExportDefault) d.single_use = false; if (safe_to_assign(tw, d, true)) { mark(tw, d); tw.loop_ids[d.id] = tw.in_loop; @@ -6709,6 +6711,7 @@ merge(Compressor.prototype, { var var_decl = 0; self.walk(new TreeWalker(function(node) { if (var_decl > 1) return true; + if (node instanceof AST_ExportDeclaration) return true; if (node instanceof AST_Scope && node !== self) return true; if (node instanceof AST_Var) { var_decl++; @@ -6728,12 +6731,15 @@ merge(Compressor.prototype, { dirs.push(node); return make_node(AST_EmptyStatement, node); } - if (hoist_funs && node instanceof AST_Defun - && (tt.parent() === self || !compressor.has_directive("use strict"))) { + if (node instanceof AST_Defun) { + if (!hoist_funs) return node; + if (tt.parent() !== self && compressor.has_directive("use strict")) return node; hoisted.push(node); return make_node(AST_EmptyStatement, node); } - if (hoist_vars && node instanceof AST_Var) { + if (node instanceof AST_Var) { + if (!hoist_vars) return node; + if (tt.parent() instanceof AST_ExportDeclaration) return node; if (!all(node.definitions, function(defn) { var sym = defn.name; return sym instanceof AST_SymbolVar |