diff options
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/compress.js | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/lib/compress.js b/lib/compress.js index 72f8e636..b371aadb 100644 --- a/lib/compress.js +++ b/lib/compress.js @@ -4080,12 +4080,10 @@ merge(Compressor.prototype, { def(AST_ObjectProperty, function(compressor, first_in_statement) { return this.value.drop_side_effect_free(compressor, first_in_statement); }); - def(AST_Sequence, function(compressor) { - var last = this.tail_node(); - var expr = last.drop_side_effect_free(compressor); - if (expr === last) return this; - var expressions = this.expressions.slice(0, -1); - if (expr) expressions.push(expr); + def(AST_Sequence, function(compressor, first_in_statement) { + var expressions = trim(this.expressions, compressor, first_in_statement); + if (expressions === this.expressions) return this; + if (!expressions) return null; return make_sequence(this, expressions); }); def(AST_Sub, function(compressor, first_in_statement) { |