🏁 Script executed:

#!/bin/bash
set -euo pipefail

# Locate and print the relevant portion of the schema
sed -n '1,120p' backend/models/User.js | cat -n

# Print index-related lines specifically
rg -n "UserSchema\.index|index\(" backend/models/User.js

# Check whether provider/providerId are set in defaults or validation logic
rg -n "providerId|provider" backend/models/User.js

Repository: GitMetricsLab/github_tracker

Length of output: 1791

🌐 Web query:

MongoDB sparse unique compound index semantics provider providerId missing providerId $exists true partialFilterExpression

💡 Result:

MongoDB semantics for a “sparse unique compound index where providerId is missing / $exists:true / partialFilterExpression provider.providerId …” 1) sparse + unique means “uniqueness only among indexed documents; missing fields are allowed” - MongoDB sparse indexes only include documents that have the indexed field(s) present, and a sparse unique index prevents duplicates for the indexed key values while allowing multiple documents that omit the key [1]. - For sparse compound indexes, MongoDB indexes a document if it contains at least one of the indexed fields; the combination of sparse-ness with compound keys affects whether documents without all fields get included in the index entry [1]. 2) You cannot combine sparse with partialFilterExpression in a single index definition - MongoDB partial indexes explicitly say: “You cannot specify both the partialFilterExpression option and the sparse option.” [2][3]. So the “sparse unique … partialFilterExpression …” combination is not valid as a single index spec. 3) If your real goal is “unique only when provider.providerId exists (and maybe is non-null),” use a partial unique index (not sparse) - Partial indexes include only documents that match partialFilterExpression, and when a unique constraint is defined on that partial index, the uniqueness constraint applies only to documents that meet the partial filter [2][3]. - The docs example shows partial unique indexes expressed with { $exists: true } (e.g., password: { $exists: true }) [2][3]. Example pattern (provider/providerId): - Index that enforces uniqueness of (provider, providerId) only for documents where providerId exists: db.collection.createIndex( { "provider": 1, "provider.providerId": 1 }, { unique: true, partialFilterExpression: { "provider.providerId": { $exists: true } } }) This matches the documented behavior that partial unique constraints apply only to documents satisfying partialFilterExpression [2][3], and it avoids any need for sparse. 4) $exists:true in queries and index usage: sparse can help, but it’s not the right tool for “uniqueness conditioned on field presence” - The $exists operator matches documents that contain the field (including documents where the field value is null) [4]. - MongoDB docs also note that you can make $exists: true queries more efficient by creating a sparse index on that field [4]. However, for uniqueness guarantees specifically, partial indexes provide the conditional uniqueness semantics you want (unique only for docs matching the filter), whereas sparse unique semantics are based on presence rules of sparse indexing and compound sparse indexing can still index documents with only partial key field presence [1]. 5) Practical takeaway for “providerId missing” cases - If you use sparse+unique on a compound key, documents where providerId is missing can still end up being indexed depending on which compound fields are present (sparse compound indexes index a document if it contains at least one indexed field) [1]. That can lead to surprising uniqueness behavior. - If you instead use a partial unique index with partialFilterExpression: { "provider.providerId": { $exists: true } }, then documents missing providerId are simply not part of the unique index constraint [2][3].

Citations:

• 1: https://www.mongodb.com/docs/manual/core/index-sparse/
• 2: https://www.mongodb.com/docs/v8.2/core/index-partial/
• 3: https://www.mongodb.com/docs/manual/core/index-partial/
• 4: https://www.mongodb.com/docs/manual/reference/operator/query/exists/

🌐 Web query:

Does URLSearchParams.get() return decoded values, and can decodeURIComponent throw URIError when input contains a raw '%'?

💡 Result:

Yes. URLSearchParams.get returns decoded values. For decoding: MDN’s URLSearchParams docs state that when constructing from a query string, “percent-encoding is decoded,” and that when retrieving values “only decoded values are returned”; likewise, when getting an individual value, you use the decoded key and get the decoded value [1][2]. About decodeURIComponent and raw “%”: decodeURIComponent throws URIError when its input contains a “%” that is not followed by two hexadecimal digits (i.e., not valid percent-encoding) [3]. Separately, it’s also documented that decodeURIComponent throws URIError if encodedURI contains a “%” not followed by two hexadecimal digits [3]. So if the raw input you pass to decodeURIComponent contains a literal “%” that isn’t part of a valid %XX sequence (e.g., just “%” or “a%AFc” where the % sequence is not valid/complete for the decoder’s expectations), decodeURIComponent can throw URIError [3].

Citations:

• 1: https://dev.mozilla.org/en-US/docs/Web/API/URLSearchParams
• 2: https://developer.mozilla.org/en-US/docs/Web/API/URLSearchParams
• 3: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/decodeURIComponent

🏁 Script executed:

#!/bin/bash
set -euo pipefail

FILE="src/pages/Login/Login.tsx"
if [ ! -f "$FILE" ]; then
  echo "Missing file: $FILE" >&2
  exit 1
fi

# Show the relevant region with line numbers
nl -ba "$FILE" | sed -n '1,140p' | sed -n '40,90p'

Repository: GitMetricsLab/github_tracker

Length of output: 116

🏁 Script executed:

#!/bin/bash
set -euo pipefail

FILE="src/pages/Login/Login.tsx"
if [ ! -f "$FILE" ]; then
  echo "Missing file: $FILE" >&2
  exit 1
fi

# Print lines ~40-90 with line numbers via awk
awk 'NR>=35 && NR<=90 {printf "%5d: %s\n", NR, $0}' "$FILE"

# Also locate where oauthMessage is defined
rg -n "oauthMessage" "$FILE" || true

Repository: GitMetricsLab/github_tracker

Length of output: 2415

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Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.