* fix: always-fresh service worker cache

* chore: clarify service-worker

* fix: cache in CacheStorage

* feat: set __isDocumentCached

* add back in manifest precaching

* add unit tests (incomplete)

* test: simplify test env

* test: add service-worker cypress test

* test: service-worker document handler

* fix: CachedDocument ctor

* fix: Readable for ReadableStream in jest

* build: clean up module loading

* fix: rename commands->ethereum

* build: simplify package.json deps

* build: clean up cypress usage

* build: clean up yarn.lock

* build: record cypress runs

* build: disable chromeWebSecurity in cypress tests

* build: rm babel

* build: disable sw in ci cypress

* build: nits

* build: update workbox version

* chore: fix merge

* test: cache

* test: cypress-ify the before hook

* test: clear sw before each test

* fix: cy then

* test: cypress shenanigans

* style: lint

* chore: rm todo

* test: fail fast for service worker with dev builds

* docs: update contributing to tests

* fix: clean up tests after merge

- Add fast fail in case of dev server, which lacks ServiceWorker

* fix: inject ethereum

* test: service worker

* test: increase sw timeout

* test: sw state

* test: run cypress in chrome

* feat: add on-demand caching to improve sw startup time

* test: test dynamically

* fix: simplify cached doc

* fix: optional sw

* fix: expose response on cached doc

* fix: stub out sw req

* fix: intercept
Co-authored-by: Christine Legge <christine.legge@uniswap.org>