Intermittent build errors

[kernelwhisperer]

Sometimes you get this error:

apps/explorer/src/modules/bridge/hooks/useCrossChainOrder.ts:43:11 - error TS2322: Type 'import("/home/daniel/repos/cow/cowswap/node_modules/@cowprotocol/sdk-order-book/dist/index").OrderBookApi' is not assignable to type 'import("/home/daniel/repos/cow/cowswap/node_modules/@cowprotocol/sdk-bridging/node_modules/@cowprotocol/sdk-order-book/dist/index").OrderBookApi'.
  Types have separate declarations of a private property 'rateLimiter'.

More context: https://cowservices.slack.com/archives/C0361CDG8GP/p1763460061456139
You can also see the build errors in cowprotocol/cowswap#6620

I think the issue is that cow-sdk is being published with the following section in its package.json:

  "dependencies": {
    "@cowprotocol/sdk-app-data": "4.3.4",
    "@cowprotocol/sdk-common": "0.4.0",
    "@cowprotocol/sdk-config": "0.6.0",
    "@cowprotocol/sdk-contracts-ts": "0.7.3",
    "@cowprotocol/sdk-order-signing": "0.1.18",
    "@cowprotocol/sdk-order-book": "0.4.2",
    "@cowprotocol/sdk-trading": "0.6.2"
  },

And if you have other conflicting packages, like we do:

"@cowprotocol/sdk-bridging@^0.8.3":
  version "0.8.5"
  resolved "https://registry.yarnpkg.com/@cowprotocol/sdk-bridging/-/sdk-bridging-0.8.5.tgz#c45090b06af1084fc1a8edba9841ffd40e3c2d73"
  integrity sha512-tQFt/Ey5YuY0Q9q3nruZpbVpwpOEFV8DLu7DMoawPNcDsY6N1S01Vx8KRZUwHEibYRu2AOKhKCKAQAfCqBAR+g==
  dependencies:
    "@cowprotocol/sdk-app-data" "4.3.2"
    "@cowprotocol/sdk-common" "0.4.0"
    "@cowprotocol/sdk-config" "0.4.1"
    "@cowprotocol/sdk-contracts-ts" "0.7.1"
    "@cowprotocol/sdk-cow-shed" "0.2.3"
    "@cowprotocol/sdk-order-book" "0.4.0"
    "@cowprotocol/sdk-trading" "0.6.0"
    "@cowprotocol/sdk-weiroll" "0.1.7"
    "@defuse-protocol/one-click-sdk-typescript" "0.1.1-0.2"
    json-stable-stringify "^1.3.0"

Typescript is confused about which type definition to use, from sdk-order-book@0.4.2 or sdk-order-book@0.4.0

Long term solution

Deploy the package with ^ dependencies, e.g.:

    "@cowprotocol/sdk-order-book": "^0.4.2",

This way common deps like @cowprotocol/sdk-order-book can be deduped.

Short term solution

You need to ensure all your cow-sdk packages are upgraded in tandem, for example:

yarn add @cowprotocol/cow-sdk @cowprotocol/sdk-bridging @cowprotocol/sdk-composable @cowprotocol/sdk-cow-shed @cowprotocol/sdk-ethers-v5-adapter @cowprotocol/sdk-subgraph

And not let them use different, conflicting versions.