This PR removes the manual vendoring process. Third party code can now
be updated using the typical NPM pipeline with types/code bundling done
through Rollup.
This PR updates some code to remove constant ESLint warnings. It also
upgrades those warnings to errors - so that they have to be resolved
as part of the PR, rather than landing as a warning and causing noise.
Fixes#7229.
* chore: vendor Mitt into src/common/third-party
As discussed in #6203 we need to vendor our common dependencies in so
that when we ship an ESM build all imports point to file paths and do
not rely on Node resolution (e.g. a browser does not understand `import
mitt from 'mitt'`).
* chore: enforce file extensions on imports
To make our output agnostic it should include file extensions in the
output, as per the ESM spec. It's a bit odd for Node packages but makes
it easier to publish a browser build.
This file is now deprecated and only used by the coverage tool and
DocLint - these tools will be updated to not rely on it in the future.
We now have events defined per class - e.g. all the events that `Page`
can emit are defined in the `PageEmittedEvents` enum, and similar. We
have to keep `Events.ts` around for the aforementioned tools, but don't
want its usage creeping back into our source code.
* feat(types): improve typing of `.evaluate()`
This is the start of the work to take the types from the
`@types/puppeteer` repository and port them into our repo so we can ship
our built-in types out the box.
This change types the `evaluate` function properly. It takes a generic
type which is the type of the function you're passing, and the arguments
and the return that you get back from the `evaluate` call are typed
correctly.
This change enforces how we type arrays, e.g. choosing between:
* `string[]`
* `Array<string>`
I've gone for the `array-simple` option [1] which enforces that:
* primitive types and type references use `X[]`
* complex types use `Array<X>`
For example, we'd type an array of strings as `string[]`, but an array
of a union type as `Array<SomeUnionType>`.
[1]: https://github.com/typescript-eslint/typescript-eslint/blob/master/packages/eslint-plugin/docs/rules/array-type.md
