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Fix no match found prompt#946

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elie222 merged 2 commits intomainfrom
fix/no-match-found
Nov 11, 2025
Merged

Fix no match found prompt#946
elie222 merged 2 commits intomainfrom
fix/no-match-found

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@elie222 elie222 commented Nov 11, 2025

Summary by CodeRabbit

  • Bug Fixes

    • Enhanced handling of edge cases in rule processing to gracefully manage incomplete data and prevent processing errors.
  • Chores

    • Version bump to v2.18.18.

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Walkthrough

The pull request modifies rule-matching logic to handle missing ruleName values, introducing conditional validation and filtering to skip invalid entries. Additionally, the version is bumped from v2.18.17 to v2.18.18.

Changes

Cohort / File(s) Summary
AI rule matching logic
apps/web/utils/ai/choose-rule/ai-choose-rule.ts
Added hasRuleName flag to detect missing ruleName; changed matchedRules formation from direct object wrap to conditional single-element array; inverted noMatchFound logic for absent ruleName; implemented nullish handling in validation schema; filtered single-rule response to exclude entries lacking ruleName
Version bump
version.txt
Updated version from v2.18.17 to v2.18.18

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

  • Attention areas:
    • Logic inversion in noMatchFound condition needs verification against intended behavior
    • Interaction between hasRuleName flag and the conditional array formation logic
    • Filter operation on single-rule response to ensure no valid rules are dropped
    • Nullish handling in validation schema to confirm type safety

Possibly related PRs

  • Store match metadata #876 — Related changes to ai-choose-rule.ts addressing no-match reason messaging and adjacent logic patterns

Poem

🐰 Rulenames now checked with care,
Nullish values handled fair,
Filter out what's incomplete,
Matching logic now so neat!
Version hops to eighteen-eighteen,
Best AI rules I've ever seen! 🎯

Pre-merge checks and finishing touches

❌ Failed checks (1 warning, 1 inconclusive)
Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. You can run @coderabbitai generate docstrings to improve docstring coverage.
Title check ❓ Inconclusive The title 'Fix no match found prompt' is somewhat vague and does not clearly convey the specific technical changes made, such as handling missing ruleNames or conditional rule matching logic. Consider a more descriptive title that explains the core fix, such as 'Handle missing ruleName in AI rule selection' or 'Fix rule matching when ruleName is absent'.
✅ Passed checks (1 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
✨ Finishing touches
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🧪 Generate unit tests (beta)
  • Create PR with unit tests
  • Post copyable unit tests in a comment
  • Commit unit tests in branch fix/no-match-found

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Actionable comments posted: 0

🧹 Nitpick comments (2)
apps/web/utils/ai/choose-rule/ai-choose-rule.ts (2)

175-183: Simplify the redundant condition check.

The logic correctly handles missing ruleName values, but the condition on line 180 is redundant. Since hasRuleName is derived from !!aiResponse.object?.ruleName, checking both hasRuleName && aiResponse.object.ruleName is unnecessary.

Apply this diff to simplify the condition:

-      matchedRules:
-        hasRuleName && aiResponse.object.ruleName
-          ? [{ ruleName: aiResponse.object.ruleName, isPrimary: true }]
-          : [],
+      matchedRules: hasRuleName
+        ? [{ ruleName: aiResponse.object.ruleName!, isPrimary: true }]
+        : [],

The non-null assertion (!) is safe here because hasRuleName confirms the value exists.


269-279: Consider adding nullish handling to the multi-rule schema for consistency.

The single-rule path now handles nullish ruleName values (line 167), but the multi-rule schema still requires ruleName to be a string. If the AI can return null/undefined ruleName in single-rule mode, it might do so in multi-rule mode as well. Consider making the schema consistent by adding .nullish() to ruleName here and filtering out entries without a ruleName (similar to line 50).

Apply this diff to add consistent nullish handling:

       matchedRules: z
         .array(
           z.object({
-            ruleName: z.string().describe("The exact name of the rule"),
+            ruleName: z.string().nullish().describe("The exact name of the rule"),
             isPrimary: z
               .boolean()
               .describe(
                 "True if the rule is the primary match, false otherwise",
               ),
           }),
         )
         .describe("Array of all matching rules"),

Then update line 293 to filter out null/undefined ruleNames:

   return {
-    matchedRules: aiResponse.object.matchedRules || [],
+    matchedRules: (aiResponse.object.matchedRules || []).filter(match => match.ruleName),
     noMatchFound: aiResponse.object?.noMatchFound ?? false,
     reasoning: aiResponse.object?.reasoning ?? "",
   };
📜 Review details

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Review profile: CHILL

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📥 Commits

Reviewing files that changed from the base of the PR and between b8514b1 and 7c982e5.

📒 Files selected for processing (2)
  • apps/web/utils/ai/choose-rule/ai-choose-rule.ts (2 hunks)
  • version.txt (1 hunks)
🧰 Additional context used
📓 Path-based instructions (10)
apps/web/**/*.{ts,tsx}

📄 CodeRabbit inference engine (apps/web/CLAUDE.md)

apps/web/**/*.{ts,tsx}: Use TypeScript with strict null checks
Path aliases: Use @/ for imports from project root
Use proper error handling with try/catch blocks
Format code with Prettier
Leverage TypeScript inference for better DX

Files:

  • apps/web/utils/ai/choose-rule/ai-choose-rule.ts
!{.cursor/rules/*.mdc}

📄 CodeRabbit inference engine (.cursor/rules/cursor-rules.mdc)

Never place rule files in the project root, in subdirectories outside .cursor/rules, or in any other location

Files:

  • apps/web/utils/ai/choose-rule/ai-choose-rule.ts
  • version.txt
**/*.ts

📄 CodeRabbit inference engine (.cursor/rules/form-handling.mdc)

**/*.ts: The same validation should be done in the server action too
Define validation schemas using Zod

Files:

  • apps/web/utils/ai/choose-rule/ai-choose-rule.ts
**/*.{ts,tsx}

📄 CodeRabbit inference engine (.cursor/rules/logging.mdc)

**/*.{ts,tsx}: Use createScopedLogger for logging in backend TypeScript files
Typically add the logger initialization at the top of the file when using createScopedLogger
Only use .with() on a logger instance within a specific function, not for a global logger

Import Prisma in the project using import prisma from "@/utils/prisma";

**/*.{ts,tsx}: Don't use TypeScript enums.
Don't use TypeScript const enum.
Don't use the TypeScript directive @ts-ignore.
Don't use primitive type aliases or misleading types.
Don't use empty type parameters in type aliases and interfaces.
Don't use any or unknown as type constraints.
Don't use implicit any type on variable declarations.
Don't let variables evolve into any type through reassignments.
Don't use non-null assertions with the ! postfix operator.
Don't misuse the non-null assertion operator (!) in TypeScript files.
Don't use user-defined types.
Use as const instead of literal types and type annotations.
Use export type for types.
Use import type for types.
Don't declare empty interfaces.
Don't merge interfaces and classes unsafely.
Don't use overload signatures that aren't next to each other.
Use the namespace keyword instead of the module keyword to declare TypeScript namespaces.
Don't use TypeScript namespaces.
Don't export imported variables.
Don't add type annotations to variables, parameters, and class properties that are initialized with literal expressions.
Don't use parameter properties in class constructors.
Use either T[] or Array consistently.
Initialize each enum member value explicitly.
Make sure all enum members are literal values.

Files:

  • apps/web/utils/ai/choose-rule/ai-choose-rule.ts
apps/web/utils/**

📄 CodeRabbit inference engine (.cursor/rules/project-structure.mdc)

Create utility functions in utils/ folder for reusable logic

Files:

  • apps/web/utils/ai/choose-rule/ai-choose-rule.ts
apps/web/utils/**/*.ts

📄 CodeRabbit inference engine (.cursor/rules/project-structure.mdc)

apps/web/utils/**/*.ts: Use lodash utilities for common operations (arrays, objects, strings)
Import specific lodash functions to minimize bundle size

Files:

  • apps/web/utils/ai/choose-rule/ai-choose-rule.ts
**/*.{js,jsx,ts,tsx}

📄 CodeRabbit inference engine (.cursor/rules/ultracite.mdc)

**/*.{js,jsx,ts,tsx}: Don't use elements in Next.js projects.
Don't use elements in Next.js projects.
Don't use namespace imports.
Don't access namespace imports dynamically.
Don't use global eval().
Don't use console.
Don't use debugger.
Don't use var.
Don't use with statements in non-strict contexts.
Don't use the arguments object.
Don't use consecutive spaces in regular expression literals.
Don't use the comma operator.
Don't use unnecessary boolean casts.
Don't use unnecessary callbacks with flatMap.
Use for...of statements instead of Array.forEach.
Don't create classes that only have static members (like a static namespace).
Don't use this and super in static contexts.
Don't use unnecessary catch clauses.
Don't use unnecessary constructors.
Don't use unnecessary continue statements.
Don't export empty modules that don't change anything.
Don't use unnecessary escape sequences in regular expression literals.
Don't use unnecessary labels.
Don't use unnecessary nested block statements.
Don't rename imports, exports, and destructured assignments to the same name.
Don't use unnecessary string or template literal concatenation.
Don't use String.raw in template literals when there are no escape sequences.
Don't use useless case statements in switch statements.
Don't use ternary operators when simpler alternatives exist.
Don't use useless this aliasing.
Don't initialize variables to undefined.
Don't use the void operators (they're not familiar).
Use arrow functions instead of function expressions.
Use Date.now() to get milliseconds since the Unix Epoch.
Use .flatMap() instead of map().flat() when possible.
Use literal property access instead of computed property access.
Don't use parseInt() or Number.parseInt() when binary, octal, or hexadecimal literals work.
Use concise optional chaining instead of chained logical expressions.
Use regular expression literals instead of the RegExp constructor when possible.
Don't use number literal object member names th...

Files:

  • apps/web/utils/ai/choose-rule/ai-choose-rule.ts
!pages/_document.{js,jsx,ts,tsx}

📄 CodeRabbit inference engine (.cursor/rules/ultracite.mdc)

!pages/_document.{js,jsx,ts,tsx}: Don't import next/document outside of pages/_document.jsx in Next.js projects.
Don't import next/document outside of pages/_document.jsx in Next.js projects.

Files:

  • apps/web/utils/ai/choose-rule/ai-choose-rule.ts
  • version.txt
apps/web/utils/ai/**/*.{ts,tsx}

📄 CodeRabbit inference engine (.cursor/rules/llm.mdc)

apps/web/utils/ai/**/*.{ts,tsx}: Place main LLM feature implementations under apps/web/utils/ai/
LLM feature functions should follow the provided TypeScript pattern (separate system/user prompts, use createGenerateObject, Zod schema validation, early validation, return result.object)
Keep system prompts and user prompts separate
System prompt should define the LLM's role and task specifications
User prompt should contain the actual data and context
Always define a Zod schema for response validation
Make Zod schemas as specific as possible to guide LLM output
Use descriptive scoped loggers for each feature
Log inputs and outputs with appropriate log levels and include relevant context
Implement early returns for invalid inputs
Use proper error types and logging for failures
Implement fallbacks for AI failures
Add retry logic for transient failures using withRetry
Use XML-like tags to structure data in prompts
Remove excessive whitespace and truncate long inputs in prompts
Format prompt data consistently across similar functions
Use TypeScript types for all parameters and return values in LLM features
Define clear interfaces for complex input/output structures in LLM features

Files:

  • apps/web/utils/ai/choose-rule/ai-choose-rule.ts
apps/web/utils/{ai,llms}/**/*.{ts,tsx}

📄 CodeRabbit inference engine (.cursor/rules/llm.mdc)

Keep related AI functions co-located and extract common patterns into utilities; document complex AI logic with clear comments

Files:

  • apps/web/utils/ai/choose-rule/ai-choose-rule.ts
🧠 Learnings (6)
📚 Learning: 2025-09-17T22:05:28.646Z
Learnt from: CR
Repo: elie222/inbox-zero PR: 0
File: .cursor/rules/llm.mdc:0-0
Timestamp: 2025-09-17T22:05:28.646Z
Learning: Applies to apps/web/utils/{ai,llms}/**/*.{ts,tsx} : Keep related AI functions co-located and extract common patterns into utilities; document complex AI logic with clear comments

Applied to files:

  • apps/web/utils/ai/choose-rule/ai-choose-rule.ts
📚 Learning: 2025-10-02T23:23:48.064Z
Learnt from: CR
Repo: elie222/inbox-zero PR: 0
File: .cursor/rules/llm-test.mdc:0-0
Timestamp: 2025-10-02T23:23:48.064Z
Learning: Applies to apps/web/__tests__/**/*.test.ts : Test both AI and non-AI paths, including cases where no AI processing is required

Applied to files:

  • apps/web/utils/ai/choose-rule/ai-choose-rule.ts
📚 Learning: 2025-09-17T22:05:28.646Z
Learnt from: CR
Repo: elie222/inbox-zero PR: 0
File: .cursor/rules/llm.mdc:0-0
Timestamp: 2025-09-17T22:05:28.646Z
Learning: Applies to apps/web/utils/ai/**/*.{ts,tsx} : LLM feature functions should follow the provided TypeScript pattern (separate system/user prompts, use createGenerateObject, Zod schema validation, early validation, return result.object)

Applied to files:

  • apps/web/utils/ai/choose-rule/ai-choose-rule.ts
📚 Learning: 2025-09-17T22:05:28.646Z
Learnt from: CR
Repo: elie222/inbox-zero PR: 0
File: .cursor/rules/llm.mdc:0-0
Timestamp: 2025-09-17T22:05:28.646Z
Learning: Applies to apps/web/utils/ai/**/*.{ts,tsx} : Make Zod schemas as specific as possible to guide LLM output

Applied to files:

  • apps/web/utils/ai/choose-rule/ai-choose-rule.ts
📚 Learning: 2025-09-17T22:05:28.646Z
Learnt from: CR
Repo: elie222/inbox-zero PR: 0
File: .cursor/rules/llm.mdc:0-0
Timestamp: 2025-09-17T22:05:28.646Z
Learning: Applies to apps/web/utils/ai/**/*.{ts,tsx} : Implement fallbacks for AI failures

Applied to files:

  • apps/web/utils/ai/choose-rule/ai-choose-rule.ts
📚 Learning: 2025-09-17T22:05:28.646Z
Learnt from: CR
Repo: elie222/inbox-zero PR: 0
File: .cursor/rules/llm.mdc:0-0
Timestamp: 2025-09-17T22:05:28.646Z
Learning: Applies to apps/web/utils/ai/**/*.{ts,tsx} : Place main LLM feature implementations under apps/web/utils/ai/

Applied to files:

  • apps/web/utils/ai/choose-rule/ai-choose-rule.ts
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🔇 Additional comments (3)
version.txt (1)

1-1: LGTM! Version bump looks good.

The version increment from v2.18.17 to v2.18.18 is consistent with the bug fix nature of this PR.

apps/web/utils/ai/choose-rule/ai-choose-rule.ts (2)

50-50: Good defensive programming.

This guard correctly handles cases where the AI response might include matches without a ruleName, preventing potential errors downstream.


167-167: Schema change is intentional and architecturally sound.

The ruleName: z.string().nullish() at line 167 is intentional for the single-rule path, which needs to handle the "no match found" case. The multi-rule path (line 272) correctly requires non-nullable ruleName because matchedRules array should only contain items with valid rule names. The two paths use different strategies: single-rule with nullable ruleName + noMatchFound flag, versus multi-rule with required ruleName + empty array for no matches. Both schemas appropriately guide LLM output for their respective use cases.

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No issues found across 2 files

@elie222 elie222 merged commit 5269433 into main Nov 11, 2025
16 checks passed
@elie222 elie222 deleted the fix/no-match-found branch November 11, 2025 10:37
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