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Adding the "no-unused-var" check in eslintrc.json (for develop-postgres branch). #2465

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Suyash878
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@Suyash878 Suyash878 commented Nov 23, 2024

What kind of change does this PR introduce?

Bug fix

Issue Number:

Fixes #2259

Did you add tests for your changes?

No

Snapshots/Videos:

None.

If relevant, did you update the documentation?

Not needed.

Summary

Added the "no-unused-var" check so that PRs fail when they encounter an unused variables, therefore maintaining the code quality.

Does this PR introduce a breaking change?

No.

Other information

There is already a PR related to this same issue but it is directed to the develop branch, I am introducing the same changes for develop-postgres branch.

Have you read the contributing guide?

Yes

Summary by CodeRabbit

  • Chores
    • Updated ESLint configuration to enforce stricter checks on unused variables in TypeScript files.

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coderabbitai bot commented Nov 23, 2024

Walkthrough

The pull request introduces a new linting rule to the ESLint configuration file .eslintrc.json, specifically enforcing the rule "@typescript-eslint/no-unused-vars": "error". This change aims to improve code quality by marking unused variables in TypeScript files as errors during linting, while maintaining the existing configuration settings.

Changes

File Change Summary
.eslintrc.json Added rule "@typescript-eslint/no-unused-vars": "error" to enforce stricter checks on unused variables.

Assessment against linked issues

Objective Addressed Explanation
Linting rules must be tightened for each commit and PR (2259)
CLI Husky commits must fail if any of these eslint conditions are present (2259)
PRs must fail if any of these eslint conditions are present (2259)

Possibly related PRs

  • adding no-unused-vars rule #2428: This PR adds the same rule "@typescript-eslint/no-unused-vars": "error" to the .eslintrc.json file, directly related to the changes made in the main PR.

Suggested reviewers

  • palisadoes
  • varshith257

Poem

In the land of code, where rabbits hop,
A new rule was added, we won't stop!
Unused vars now raise a cheer,
Linting's tighter, oh so clear!
With every commit, we’ll take a stand,
For cleaner code, we lend a hand! 🐇✨


📜 Recent review details

Configuration used: .coderabbit.yaml
Review profile: CHILL

📥 Commits

Reviewing files that changed from the base of the PR and between ea145f2 and 691ed98.

📒 Files selected for processing (1)
  • .eslintrc.json (1 hunks)
🔇 Additional comments (2)
.eslintrc.json (2)

Line range hint 1-146: Configuration completeness verified.

The ESLint configuration now includes all the required rules specified in issue #2259:

  • ✓ react/destructuring-assignment
  • ✓ @typescript-eslint/explicit-module-boundary-types
  • ✓ @typescript-eslint/no-explicit-any
  • ✓ @typescript-eslint/no-non-null-assertion
  • ✓ @typescript-eslint/no-unused-vars (newly added)

The rules are properly configured with appropriate severity levels and are complemented by a comprehensive set of additional TypeScript and React-specific rules.


58-58: LGTM! The rule implementation looks correct.

The addition of "@typescript-eslint/no-unused-vars": "error" is properly implemented and aligns with the PR objectives to improve code quality by failing PRs that contain unused variables.

Let's verify the rule's effectiveness:

✅ Verification successful

The ESLint rule @typescript-eslint/no-unused-vars is properly configured and there are no conflicts

The verification shows that:

  1. The rule is correctly placed in .eslintrc.json among other TypeScript rules
  2. The codebase has extensive TypeScript usage with many variable declarations
  3. No ESLint disable directives were found for this rule
  4. No conflicting configurations exist in other ESLint config files
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify the ESLint rule configuration and check for any existing violations

# Check if the rule is properly recognized by ESLint
npx eslint --print-config .eslintrc.json | jq '.rules."@typescript-eslint/no-unused-vars"'

# Search for potential existing violations in TypeScript files
rg -t ts -t tsx '\b(const|let|var|function)\s+\w+\s*[=:][^;]*(?!.*\1\b).*$' 

Length of output: 569


Script:

#!/bin/bash
# Let's verify the ESLint configuration and potential unused variables using simpler commands

# First, verify the ESLint configuration syntax
cat .eslintrc.json

# Then, look for variable declarations that might be unused
# Using simpler patterns to check variable declarations
rg -t ts -t tsx "^\s*(const|let|var)\s+\w+\s*=" --no-heading

# Check if there are any existing ESLint disable comments for unused vars
rg -t ts -t tsx "eslint-disable.*@typescript-eslint/no-unused-vars" --no-heading

Length of output: 4374


Script:

#!/bin/bash
# Let's verify the configuration and potential impacts with correct file extensions

# Check if there are any TypeScript/React files
fd -e ts -e tsx

# Look for variable declarations in TypeScript files
rg "^\s*(const|let|var)\s+\w+\s*=" -g "*.{ts,tsx}"

# Check for any ESLint disable comments for unused vars
rg "eslint-disable.*@typescript-eslint/no-unused-vars" -g "*.{ts,tsx}"

# Verify if there are any other ESLint configurations that might conflict
fd -e json -x grep -l "eslint" {}

Length of output: 104828


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@Suyash878 Suyash878 changed the title Adding the "no-unused-var" check in eslintrc.json to maintain code quality (for develop-postgres branch). Adding the "no-unused-var" check in eslintrc.json (for develop-postgres branch). Nov 23, 2024
@palisadoes palisadoes added the ignore-sensitive-files-pr The contributor has a legitimate reason for editiing protected files label Nov 23, 2024
@palisadoes palisadoes merged commit ff25183 into PalisadoesFoundation:develop-postgres Nov 23, 2024
5 of 8 checks passed
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