* Specify type before parameter name
Various JSDoc `@param` entries were specified as `name {type}` rather
than `{type} name`.
A couple of `@return` entries have been given types as well.
* Use JSDoc optional syntax rather than Closure syntax
* Use @returns rather than @return
* Use consistent built-in type capitalization
Primitive types are lower-case, and Object is upper-case.
* Separate param/return description with a dash
If the extension ID is set, an alternate title and subtitle are used
for the Connect Request screen. The title is always `External
Extension`, and the subtitle is `Extension ID: [id]` instead of the
origin (which would just be `[extension-scheme]://[id]` anyway).
The hostname for the site is used as a fallback in case it has no
title.
The artificial hostname set for internal connections has been renamed
from 'MetaMask' to 'metamask' because URL objects automatically
normalize hostnames to be all lower-case, and it was more convenient to
use a URL object so that the parameter would be the same type as used
for an untrusted connection.
* eslint: Check for unused function arguments
* eslint: Ignore unused '_' in argument list
Also allow any number of '_' e.g., '__' or '___' which is to be used sparingly
* Remove and rename unused arguments
* Send metrics event from backend for on chain transaction failures
* Passes state object to backEndMetaMetricsEvent, and adds getMetaMetricState selector
