feat: Add Base support to Uniswap widget

[abarthell]

Add Base support to Uniswap widget.

Tested swapping ETH to USDC on Base: https://basescan.org/tx/0xb230b5039555c3087b61906555b1b9495395cb60486b68f9871f791505429789

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[just-toby]

@abarthell assuming you were able to test locally, get quotes and execute trades - please mark this PR ready for review when you want us to review it !

[abarthell]

@abarthell assuming you were able to test locally, get quotes and execute trades - please mark this PR ready for review when you want us to review it !

@just-toby I don't think this PR will work until USDC on Base is added here (instead of USDbC). Should I also make a change there first? I wasn't sure if it'd cause some issue with the existing pool to just swap the contract address

[just-toby]

@abarthell that's a token constant in our interface repo - it doesn't affect the widget. feel free to send us a PR to update it, but i don't think it's related to this PR.

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Name	Status	Preview	Comments	Updated (UTC)
widgets	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Sep 22, 2023 0:30am

[just-toby]

@abarthell please run yarn deduplicate - i'm seeing the lints and tests passing locally, so i don't think we need to worry about those checks. probably just need to rerun or fix the github action

[abarthell]

@abarthell please run yarn deduplicate - i'm seeing the lints and tests passing locally, so i don't think we need to worry about those checks. probably just need to rerun or fix the github action

@just-toby Sounds good! just ran deduplicate and also bumped the deps it was erroring on

[just-toby]

the test suite is only failing in your fork because you don't have the JSON_RPC_PROVIDER env variable set. it's passing for me and it should pass on main once we merge

edit: i forgot the check is required. so we don't break protocol here, do you mind setting the env variable so we can re-run the tests and get all green ? :D

[abarthell]

the test suite is only failing in your fork because you don't have the JSON_RPC_PROVIDER env variable set. it's passing for me and it should pass on main once we merge

edit: i forgot the check is required. so we don't break protocol here, do you mind setting the env variable so we can re-run the tests and get all green ?

@just-toby Ahh I see, good catch. I just set JSON_RPC_PROVIDER = https://mainnet.infura.io in the github fork env vars. can we try re-running it?

[just-toby]

hmm @abarthell i think i was wrong and it's our repo that has the wrong value for this variable. i'll get it updated and make sure your PR gets merged. (might be tomorrow since i don't have permissions to edit the settings in this repo)

[abarthell]

@just-toby Can we try re-running it one more time? I think I had the wrong variable before actually

[abarthell]

@just-toby can you help upgrade the latest npm version of the widget as well? 😁

Also, here's two more PRs to add Base USDC on the interface (instead of USDbC) and the corresponding assets:

• https://github.com/Uniswap/interface/pull/7385
• https://github.com/Uniswap/assets/pull/38