Swiper V2 Incompatible With ES2019

[SteveCorbett]

Clear and concise description of the problem

Due to the use of an optional chaining operator in V11.2.0 Swiper is no longer compatible with any JavaScript version prior to ES2020.

Suggested solution

Swiper should remain compatible with JavaScript versions prior to ES2020 due to the number of projects that are unable to be updated to later versions.

Alternative

Currently, the only option for a project using an earlier JavaScript version is to install V11.1.15

Additional context

No response

Validations

• Follow our Code of Conduct
• Read the docs.
• Check that there isn't already an issue that request the same feature to avoid creating a duplicate.

Would you like to open a PR for this feature?

• I'm willing to open a PR