2.21.2 does not work in IE11

[simonbrent]

When trying to use date-fns@2.21.2 in IE11, I get the following error:

Expected ':'

This error is being caused by node_modules/date-fns/esm/_lib/format/lightFormatters/index.js, which contains

var formatters = {
  // Year
  y(date, token) {
...

I think that adding @babel/plugin-transform-shorthand-properties to the plugins list in .babelrc.js might solve this issue.

[maximtop]

Thank you for reporting this bug.
I've checked, indeed adding @babel/plugin-transform-shorthand-properties solves the bug.
It will be fixed when this pr #2467 merged into master.

[simonbrent]

Thanks a lot!

[pjtatlow]

Any chance you guys can unpublish this broken version? Lots of organizations automatically update their node modules and will be just straight up broken in IE11.