issues with javascript expressions inside mustaches

[yeedle]

This might be an issue with the node version I'm using but I'm not sure.

Using an expression as follows works fine

{{ new Date($page.frontmatter.date) }}

However, if I pass the date as a string directly like so

{{ new Date("2017-05-08 09:50:00 EST") }}

the build fails. The error I get is that I should

  - avoid using JavaScript keyword as property name: "new"
  Raw expression: {{ new Date("2017-05-08 09:50:00 EST") }}

Do expressions not support passing arguments as strings to constructors?