diff options
Diffstat (limited to 'lib/compress.js')
| -rw-r--r-- | lib/compress.js | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/lib/compress.js b/lib/compress.js index 1be74033..a418925a 100644 --- a/lib/compress.js +++ b/lib/compress.js @@ -7861,11 +7861,13 @@ merge(Compressor.prototype, { var prop = this.property; if (expr.may_throw_on_access(compressor)) { if (!this.optional) return this; - prop = prop.drop_side_effect_free(compressor); - if (!prop) return expr.drop_side_effect_free(compressor, first_in_statement); - var node = this.clone(); - node.property = prop; - return node; + if (prop.has_side_effects(compressor)) { + prop = prop.drop_side_effect_free(compressor); + if (!prop) return expr.drop_side_effect_free(compressor, first_in_statement); + var node = this.clone(); + node.property = prop; + return node; + } } expr = expr.drop_side_effect_free(compressor, first_in_statement); if (!expr) return prop.drop_side_effect_free(compressor, first_in_statement); |