Uniswap / Uniswap/interface

Crash report: `Error: Invariant failed`

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Dominant language
TypeScript
Stars
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Description

URL

https://app.uniswap.org/#/swap?inputCurrency=0x0c7cf86188632e16af00415214155950684466a8

swap state

{
  "INPUT": {
    "currencyId": "ETH"
  },
  "OUTPUT": {
    "currencyId": "0x0c7cF86188632e16AF00415214155950684466A8"
  },
  "independentField": "OUTPUT",
  "typedValue": "1",
  "recipient": null
}

Error

Error: Invariant failed

Stacktrace

Error: Invariant failed
    at i (https://app.uniswap.org/static/js/9.195940e7.chunk.js:2:240503)
    at new e (https://app.uniswap.org/static/js/9.195940e7.chunk.js:2:4066575)
    at e.createUncheckedTrade (https://app.uniswap.org/static/js/9.195940e7.chunk.js:2:4068439)
    at e.encodeSwaps (https://app.uniswap.org/static/js/9.195940e7.chunk.js:2:4082378)
    at e.swapCallParameters (https://app.uniswap.org/static/js/9.195940e7.chunk.js:2:4084017)
    at https://app.uniswap.org/static/js/main.130ceebc.chunk.js:1:299296
    at Object.Qa [as useMemo] (https://app.uniswap.org/static/js/9.195940e7.chunk.js:2:3690477)
    at t.useMemo (https://app.uniswap.org/static/js/9.195940e7.chunk.js:2:3515533)
    at https://app.uniswap.org/static/js/main.130ceebc.chunk.js:1:299190
    at as (https://app.uniswap.org/static/js/main.130ceebc.chunk.js:1:299843)

Device data

{
  "ua": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/106.0.0.0 Safari/537.36",
  "browser": {
    "name": "Chrome",
    "version": "106.0.0.0",
    "major": "106"
  },
  "engine": {
    "name": "Blink",
    "version": "106.0.0.0"
  },
  "os": {
    "name": "Windows",
    "version": "10"
  },
  "device": {},
  "cpu": {
    "architecture": "amd64"
  }
}

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Reproduce the swap URL and state shown in the report, then trace the source implementation behind createUncheckedTrade, encodeSwaps, and swapCallParameters. Identify which invariant fails for this token and verify that the same swap no longer crashes, with a regression test if the relevant test entry point is found.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
blockchain, frontend
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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