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The pathParse function in RescriptReactRouter.res currently treats single slash and double slash URLs identically, which causes routing conflicts and prevents proper URL differentiation.

Open Beginner friendly
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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
65/100
Issue type
Bug
Clarity
Clearly specified
Activity status
Stale
Tech stack
react
Domain
frontend

Research direction

Start in RescriptReactRouter.res at the pathParse function and inspect the split and filter logic for slash-separated paths. Verify the behavior for /analytics-transaction and //analytics-transaction, then confirm that the resulting lists preserve the leading empty segment only for the double-slash URL.

Written by the indexing model from the issue text.

Description

Current Behavior

// Both URLs return the same parsed result
pathParse("/analytics-transaction") → list{"analytics-transaction"}
pathParse("//analytics-transaction") → list{"analytics-transaction"} // Problem!

Expected Behavior

// URLs should parse differently to enable proper routing
pathParse("/analytics-transaction") → list{"analytics-transaction"}
pathParse("//analytics-transaction") → list{"", "analytics-transaction"} // Should preserve leading empty string

Impact

  • Cannot differentiate between /path and //path in routing logic
  • Causes "Page Not Found" errors for valid double slash URLs
  • Breaks routing patterns that rely on double slash prefixes

Proposed Solution

Modify the filter logic to preserve the first empty string while removing others:
// Current problematic code
raw->Js.String2.split("/")->Js.Array2.filter(item => item->Js.String2.length != 0)->arrayToList

// Proposed fix
let splitArray = raw->Js.String2.split("/")
let filteredArray = []
splitArray->Js.Array2.forEachi((item, index) => {
if item->Js.String2.length != 0 || index == 0 {
filteredArray->Js.Array2.push(item)->ignore
}
})
filteredArray->arrayToList

Dominant language
ReScript
Stars
517
Forks
45
PR merge metrics
No merged PRs in 30d

Contributor guide

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First steps

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  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.

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