Latest aurelia-metadata library causes decorators to fail in aurelia-validation

[meash-nrel]

aurelia-validation 0.6.2 unit tests are passing (once missing dependent libs are installed) when using aurelia-metadata 1.1.3.

updating aurelia-metadata to 1.1.4 causes the library's ensure decorator to stop working altogether. see aurelia/validation#216

$jspm install aurelia-metadata
... Installed aurelia-metadata as npm:aurelia-metadata@^1.0.0-beta.1.1.4 (1.0.0-beta.1.1.4)
... aurelia-metadata 1.0.0-beta.1.1.3 -> 1.0.0-beta.1.1.4

Unit tests in aurelia-validation will now fail - as the ensure decorator no longer functions.

Not seeing any commits in this package of note from 1.1.3 to 1.1.4. What could be causing this inter-dependency failure?

[meash-nrel]

Looking at this library's dependencies, it's only aurelia-pal and core-js. Prior to updating aurelia-metadata from 1.1.3, i had already upgraded to aurelia-pal@1.0.0-beta.1.1.1, and core-js 2.1.0 in aurelia-validation. So the latest versions of the underlying dependency libs were being used prior to aurelia-metadata being updated. Everything was working.

Update aurelia-metadata, though, and then decorators stop working.

[doktordirk]

core-js@2.0.3 might be the problem.
see (aurelia/validation#216 (comment))

[meash-nrel]

it appears the issue is due to core-js change vs shim in use. closing this as it seems issue is within validation lib.

[meash-nrel]

Before the core-js bump the aurelia metadata had it's own polyfills for metadata reflection, with the core-js update these were replaced by the core-js versions.

Unsure if metadata lib needs to reflect the shim diff or not.