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Add an extension mechanism that allows users to add instances of
Assertion<T>
to the logic within theexpect(..)
function. These are added in the form of aPlugin<T, A extends Assertion<T>
object, which contains the necessary information to determine where and when the instance is returned by theexpect(..)
function.Additionally, the PR adds another example workspace called
@examples/symbol-plugin
, which shows how a plugin can be created as a 3rd-party library. Then the plugin is used and tested in both@examples/jest
and@examples/mocha
workspaces.