keepNames breaks on Chrome 38 / Safari 9

[pecoram]

Hi,
When the keepNames option is enabled, the generated code includes the following snippet:

var __defProp = Object.defineProperty;
var __name = (target, value) => __defProp(target, "name", { value, configurable: true });

However, this code is not compatible with older browsers like Chrome 38 or Safari 9, as the "name" property is protected and returns the following error:

Attempting to change configurable attribute of unconfigurable property

After testing, I found that manually replacing "name" with another string (e.g., "propertyName") resolves the issue.

Would it be possible to replace "name" with a different string?

Thank you!