Uniswap / Uniswap/interface

Crash report: `Error: Invariant failed`

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Dominant language
TypeScript
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Description

URL

https://app.uniswap.org/#/swap?inputCurrency=0x1bbf25e71ec48b84d773809b4ba55b6f4be946fb&outputCurrency=ETH

swap state

{
  "INPUT": {
    "currencyId": "0x1BBf25e71EC48B84d773809B4bA55B6F4bE946Fb"
  },
  "OUTPUT": {
    "currencyId": "0xdAC17F958D2ee523a2206206994597C13D831ec7"
  },
  "independentField": "OUTPUT",
  "typedValue": "277",
  "recipient": null
}

Error

Error: Invariant failed

Stacktrace

Error: Invariant failed
    at i (https://app.uniswap.org/static/js/9.b5edc1bf.chunk.js:2:240503)
    at new e (https://app.uniswap.org/static/js/9.b5edc1bf.chunk.js:2:4070131)
    at e.createUncheckedTrade (https://app.uniswap.org/static/js/9.b5edc1bf.chunk.js:2:4071995)
    at e.encodeSwaps (https://app.uniswap.org/static/js/9.b5edc1bf.chunk.js:2:4085934)
    at e.swapCallParameters (https://app.uniswap.org/static/js/9.b5edc1bf.chunk.js:2:4087573)
    at https://app.uniswap.org/static/js/main.3e62ed90.chunk.js:1:291749
    at Object.Qa [as useMemo] (https://app.uniswap.org/static/js/9.b5edc1bf.chunk.js:2:3694024)
    at t.useMemo (https://app.uniswap.org/static/js/9.b5edc1bf.chunk.js:2:3519066)
    at https://app.uniswap.org/static/js/main.3e62ed90.chunk.js:1:291643
    at Xc (https://app.uniswap.org/static/js/main.3e62ed90.chunk.js:1:292296)

Device data

{
  "ua": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) 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": "Mac OS",
    "version": "10.15.7"
  },
  "device": {},
  "cpu": {}
}

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, then trace the reported createUncheckedTrade, encodeSwaps, and swapCallParameters calls in the source. Determine why this input produces the invariant failure; done means the swap no longer crashes for the reported case and the behavior is covered by an appropriate test.

Written by the indexing model from the issue text.

Assessment

Tech stack
blockchain, 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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