Uniswap / Uniswap/interface

Crash report: `Error: Could not parse fraction`

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Dominant language
TypeScript
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Description

URL

https://app.cbswap.io/#/swap

swap state

{
  "INPUT": {
    "currencyId": "ETH"
  },
  "OUTPUT": {
    "currencyId": "0xd79C2210E3C925C054deA19A228a813954B193eA"
  },
  "independentField": "INPUT",
  "typedValue": "0.0005",
  "recipient": null
}

Error

Error: Could not parse fraction

Stacktrace

e.tryParseFraction@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:61996
t.lessThan@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:62779
t.maximumAmountIn@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:325953
ee@https://app.cbswap.io/static/js/main.e85514f8.chunk.js:1:971098
el@https://app.cbswap.io/static/js/main.e85514f8.chunk.js:1:867617
ua@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:1441766
Ha@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:1451333
Xu@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:1495057
Ms@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:1481309
As@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:1481237
Ss@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:1481098
bs@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:1478064
$i/<@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:1427558
t.unstable_runWithPriority@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:1504795
Vi@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:1427335
$i@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:1427505
Xi@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:1427438
ws@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:1478385
notify@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:394613
t.notifyNestedSubs@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:395248
t.handleChangeWrapper@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:395316
y@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:496646
t.save/</</<@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:829483
ae/</</<@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:439477
oe/</</<@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:437634
re/</</<@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:436893
ne/</</<@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:435461
te/</</<@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:434657
ee/</</<@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:433850
ue/</</<@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:440545
le/init/middleware/j/j@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:445287
ae/</</<@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:439477
oe/</</<@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:437634
re/</</<@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:436893
ne/</</<@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:435461
te/</</<@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:434657
ee/</</<@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:433850
ue/</</<@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:440545
le/init/middleware/j/j@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:445287
o/</</<@https://app.cbswap.io/static/js/35.d07a2196.chunk.js:2:96957
606/sb/</a.current.cancellations</<@https://app.cbswap.io/static/js/main.e85514f8.chunk.js:1:933384

Device data

{
  "ua": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/113.0",
  "browser": {
    "name": "Firefox",
    "version": "113.0",
    "major": "113"
  },
  "engine": {
    "name": "Gecko",
    "version": "109.0"
  },
  "os": {
    "name": "Mac OS",
    "version": "10.15"
  },
  "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 crash at https://app.cbswap.io/#/swap using the supplied swap state, then inspect the stack entries tryParseFraction, lessThan, and maximumAmountIn in the referenced JavaScript chunks. Done means this state no longer produces “Could not parse fraction”; the payload names no source files or tests.

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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