I enabled vscode autocomplete in our test files. Typechecking had too many errors to enable, but it caught some real bugs that I will fix in a follow up.
This patch contains:
* `test/types.d.ts` - d.ts file for our test runner.
* `test/tsconfig.json` - typescript project for our tests.
* JSDoc header in all specs to mark the describe as a TestSuite
* Drive-by fix of a launcher test that was using `if` instead of `it`
* Some drive-by fixes of unimpactful typos in tests.
disables some failing Firefox tests
Moves newContext error checking before the context is created, to not create zombie contexts
sets CI timeout to 30 seconds
waits for `exit` instead of `close` for processes
- Selector is again a string.
- Most methods taking selector also accept waitFor option.
- Available waitFor options are: 'visible', 'hidden', 'any' === true, false === undefined.
- waitForXPath is removed.
- waitForSelector is replaced by $(selector, { waitFor: true }).
