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fix: addresses issue and test for the issue succeeds #51

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DaveMBush
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@DaveMBush DaveMBush commented Jan 10, 2025

Issue Number: #38

Body

Allows esm to load module correctly

Summary by CodeRabbit

  • New Features

    • Enhanced module export configuration for @smarttools/eslint-plugin-rxjs
    • Added ESM support for testing and package configuration
  • Chores

    • Created test infrastructure for ESM module imports
    • Added test script to automate package testing and module verification
  • Tests

    • Introduced new test setup for ESM JavaScript module testing

@DaveMBush DaveMBush linked an issue Jan 10, 2025 that may be closed by this pull request
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coderabbitai bot commented Jan 10, 2025

Warning

There were issues while running some tools. Please review the errors and either fix the tool’s configuration or disable the tool if it’s a critical failure.

🔧 eslint

If the error stems from missing dependencies, add them to the package.json file. For unrecoverable errors (e.g., due to private dependencies), disable the tool in the CodeRabbit configuration.

tests/esm-js/index.js

Oops! Something went wrong! :(

ESLint: 9.17.0

ESLint couldn't find an eslint.config.(js|mjs|cjs) file.

From ESLint v9.0.0, the default configuration file is now eslint.config.js.
If you are using a .eslintrc.* file, please follow the migration guide
to update your configuration file to the new format:

https://eslint.org/docs/latest/use/configure/migration-guide

If you still have problems after following the migration guide, please stop by
https://eslint.org/chat/help to chat with the team.

Walkthrough

This pull request focuses on enhancing the ESM (ECMAScript Module) compatibility for the @smarttools/eslint-plugin-rxjs package. The changes include updating the package.json exports configuration to support both CommonJS and ESM imports, creating test infrastructure for ESM module testing, and adding a test script to validate the package's ESM functionality.

Changes

File Change Summary
packages/eslint-plugin-rxjs/package.json Added "import" key to exports configuration to support ESM imports
test/package.json New private package configuration for testing
tests/esm-js/index.js Added import statement for eslintPluginRxjs
tests/esm-js/package.json Set module type to "module" for ESM support
tests/esm-js/test.sh New shell script for testing ESM module import and execution

Sequence Diagram

sequenceDiagram
    participant User
    participant TestScript as test.sh
    participant ESMIndex as index.js
    participant Package as @smarttools/eslint-plugin-rxjs

    User->>TestScript: Execute test script
    TestScript->>Package: Copy package to node_modules
    TestScript->>ESMIndex: Run index.js
    ESMIndex->>Package: Import eslintPluginRxjs
    ESMIndex-->>TestScript: Log imported module
    TestScript-->>User: Report test result
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🐰 A rabbit's tale of module might,
ESM imports now shine so bright!
From CommonJS to modern way,
Our package dances, hip hooray!
Code leaps forward with joyful flight! 🚀


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nx-cloud bot commented Jan 10, 2025

View your CI Pipeline Execution ↗ for commit 64b1e44.

Command Status Duration Result
nx affected -t lint test build ✅ Succeeded 1m 42s View ↗

☁️ Nx Cloud last updated this comment at 2025-01-10 15:19:05 UTC

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Actionable comments posted: 1

🧹 Nitpick comments (3)
tests/esm-js/test.sh (3)

1-9: Add error handling for script permissions

The script should verify it has execution permissions. Also, consider adding cleanup on script exit.

 #!/bin/bash

 # Exit on any error
 set -e
+
+# Verify script has execution permissions
+if [[ ! -x "$0" ]]; then
+    echo "Error: Script must have execution permissions"
+    echo "Run: chmod +x $0"
+    exit 1
+fi
+
+# Cleanup function
+cleanup() {
+    # Remove temporary files/directories if any
+    if [ -d "$DEST_DIR" ]; then
+        rm -rf "$DEST_DIR"
+    fi
+}
+
+# Register cleanup function
+trap cleanup EXIT

10-12: Consider using environment variables for paths

The hardcoded paths could be made configurable through environment variables with defaults.

-# Define source and destination paths relative to root
-SRC_DIR="$ROOT_DIR/dist/packages/eslint-plugin-rxjs"
-DEST_DIR="$ROOT_DIR/node_modules/@smarttools/eslint-plugin-rxjs"
+# Allow path configuration through environment variables
+SRC_DIR="${PLUGIN_SRC_DIR:-$ROOT_DIR/dist/packages/eslint-plugin-rxjs}"
+DEST_DIR="${PLUGIN_DEST_DIR:-$ROOT_DIR/node_modules/@smarttools/eslint-plugin-rxjs}"

36-44: Add more detailed test output

The test output could be more informative about what's being tested.

-# Run the index.js file
-echo "Running index.js..."
+# Run ESM compatibility tests
+echo "Running ESM compatibility tests..."
+echo "Test file: $SCRIPT_DIR/index.js"
 if node "$SCRIPT_DIR/index.js"; then
-    echo "✓ Tests completed successfully"
+    echo "✓ ESM compatibility tests passed"
     exit 0
 else
-    echo "✗ Tests failed"
+    echo "✗ ESM compatibility tests failed"
+    echo "Check the error output above for details"
     exit 1
 fi
📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 8134848 and 64b1e44.

📒 Files selected for processing (5)
  • packages/eslint-plugin-rxjs/package.json (1 hunks)
  • test/package.json (1 hunks)
  • tests/esm-js/index.js (1 hunks)
  • tests/esm-js/package.json (1 hunks)
  • tests/esm-js/test.sh (1 hunks)
✅ Files skipped from review due to trivial changes (3)
  • tests/esm-js/index.js
  • tests/esm-js/package.json
  • test/package.json
⏰ Context from checks skipped due to timeout of 90000ms (1)
  • GitHub Check: main

Comment on lines +34 to +35
"types": "./index.d.ts",
"import": "./index.cjs"
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💡 Codebase verification

Critical: Entry point file index.cjs is missing

The package configuration points to index.cjs for both CommonJS and ESM imports, but this file doesn't exist in the package. This will cause the package to fail in both CommonJS and ESM environments.

  • Ensure the build process correctly generates index.cjs in the package root
  • Verify the build output structure matches the package.json configuration
🔗 Analysis chain

Verify ESM compatibility with .cjs extension

While adding the "import" condition is a step towards ESM support, pointing it to a .cjs file might cause issues in strict ESM environments. Consider:

  1. Creating a dedicated ESM entry point (index.mjs)
  2. Using dynamic imports for ESM compatibility

Let's verify ESM compatibility:

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Check if the package works in ESM context
cd tests/esm-js
# Attempt ESM import
echo 'import pkg from "@smarttools/eslint-plugin-rxjs"; console.log(pkg);' > test.mjs
node --experimental-vm-modules test.mjs 2>&1 || true

Length of output: 941


Script:

#!/bin/bash
# Check package configuration and structure
echo "=== Package.json content ==="
cat packages/eslint-plugin-rxjs/package.json

echo -e "\n=== Index.cjs content ==="
cat packages/eslint-plugin-rxjs/index.cjs 2>/dev/null || echo "File not found"

echo -e "\n=== Check for MJS files ==="
fd -e mjs . packages/eslint-plugin-rxjs/

echo -e "\n=== Check for JS files ==="
fd -e js . packages/eslint-plugin-rxjs/ --exclude '*.cjs' --exclude '*.mjs'

Length of output: 1356

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Yes, that file is created as part of the build process and is not expected here

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@DaveMBush Understood, thank you for the clarification. I'll note this for future reviews.


✏️ Learnings added
Learnt from: DaveMBush
PR: DaveMBush/eslint-plugin-rxjs#51
File: packages/eslint-plugin-rxjs/package.json:34-35
Timestamp: 2025-01-10T15:20:25.714Z
Learning: In the @smarttools/eslint-plugin-rxjs package, index.cjs is generated during the build process and is not expected to exist in the source code.

Note: Learnings are effective only in the context of similar code segments. To apply general coding guidelines, please configure review instructions. You can manage existing learnings in the app.


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@DaveMBush DaveMBush merged commit fd64cab into main Jan 10, 2025
3 checks passed
@DaveMBush DaveMBush deleted the dmb/missing-import-key-in-packagejson-exports-for-esm-compatibility/38 branch January 10, 2025 15:21
This was referenced Jan 25, 2025
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Missing "import" key in package.json exports for ESM compatibility
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