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refactor: fix workaround for new typescript version #1228

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merged 1 commit into from
Nov 27, 2024
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Yonom
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@Yonom Yonom commented Nov 27, 2024

Summary by CodeRabbit

  • New Features

    • Enhanced type specificity in the FfmpegTool component for improved performance.
    • Streamlined blob creation process in the download functionality.
  • Chores

    • Added typescript as a new development dependency in package.json.

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vercel bot commented Nov 27, 2024

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assistant-ui ✅ Ready (Inspect) Visit Preview 💬 Add feedback Nov 27, 2024 6:19am

@Yonom Yonom merged commit 999431f into main Nov 27, 2024
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coderabbitai bot commented Nov 27, 2024

Walkthrough

The changes involve updates to the FfmpegTool component in examples/with-ffmpeg/app/page.tsx, specifically modifying type assertions for a data variable and simplifying the Blob construction. Additionally, the package.json file has been updated to include a new development dependency on TypeScript version ^5.7.2, without altering existing dependencies or scripts.

Changes

File Change Summary
examples/with-ffmpeg/app/page.tsx Modified type assertion for data from Uint8Array to Uint8Array<ArrayBuffer>. Simplified Blob construction by removing unnecessary type casting.
package.json Added new development dependency: "typescript": "^5.7.2" under devDependencies.

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examples/with-ffmpeg/app/page.tsx

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Actionable comments posted: 2

📜 Review details

Configuration used: CodeRabbit UI
Review profile: ASSERTIVE

📥 Commits

Reviewing files that changed from the base of the PR and between e8752ac and 76b38ab.

⛔ Files ignored due to path filters (1)
  • pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml
📒 Files selected for processing (2)
  • examples/with-ffmpeg/app/page.tsx (1 hunks)
  • package.json (1 hunks)
🔇 Additional comments (3)
package.json (2)

14-15: LGTM! Changes align with PR objective

The addition of TypeScript as a dev dependency is appropriate for fixing type-related workarounds mentioned in the PR title.


15-15: Verify TypeScript version compatibility

The addition of TypeScript 5.7.2 is a significant upgrade. Please ensure:

  1. All existing TypeScript code is compatible with version 5.7
  2. All dependencies support this version
✅ Verification successful

TypeScript 5.7.2 upgrade appears compatible with the codebase

The verification shows that:

  • Most packages are already using TypeScript 5.x, with several already at version 5.7.2
  • All @types dependencies are at compatible versions
  • The project has extensive TypeScript usage with 27 tsconfig.json files
  • No conflicting TypeScript version requirements found across packages
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check for TypeScript-related dependencies and their compatibility

# Find all package.json files in the repository
echo "Checking for TypeScript dependencies in all package.json files..."
fd package.json --type f --exec jq -r '.dependencies,.devDependencies | select(. != null) | to_entries[] | select(.key | contains("typescript") or contains("ts-") or contains("@types/")) | "\(.key): \(.value)"'

# Search for tsconfig files to understand TypeScript usage
echo -e "\nChecking for TypeScript configuration files..."
fd tsconfig.json --type f

Length of output: 3047

examples/with-ffmpeg/app/page.tsx (1)

109-109: LGTM! Good cleanup of redundant type assertion

The removal of as BlobPart is correct since ArrayBuffer is already assignable to BlobPart. This change makes the code cleaner while maintaining type safety.

Comment on lines +104 to 112
const data = (await ffmpeg.readFile(
outputFileName,
)) as Uint8Array<ArrayBuffer>;
window.open(
URL.createObjectURL(
// https://github.com/microsoft/TypeScript/issues/60579
new Blob([data.buffer as BlobPart], { type: outputMimeType }),
new Blob([data.buffer], { type: outputMimeType }),
),
"_blank",
);
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🧹 Nitpick (assertive)

Consider adding error handling and cleanup

The file operations and Blob URL creation could benefit from:

  1. Try-catch blocks around FFmpeg operations
  2. Proper cleanup of object URLs to prevent memory leaks

Consider wrapping the code like this:

const handleDownload = async () => {
  let objectUrl: string | undefined;
  try {
    const ffmpeg = ffmpegRef.current;
    const data = (await ffmpeg.readFile(outputFileName)) as Uint8Array;
    objectUrl = URL.createObjectURL(
      new Blob([data.buffer], { type: outputMimeType })
    );
    window.open(objectUrl, "_blank");
  } catch (error) {
    console.error('Failed to process file:', error);
    // Handle error appropriately
  } finally {
    if (objectUrl) {
      // Cleanup object URL after a short delay to ensure the download starts
      setTimeout(() => URL.revokeObjectURL(objectUrl), 1000);
    }
  }
};

Comment on lines +104 to +106
const data = (await ffmpeg.readFile(
outputFileName,
)) as Uint8Array<ArrayBuffer>;
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⚠️ Potential issue

Remove incorrect generic type parameter from Uint8Array

The type assertion Uint8Array<ArrayBuffer> is incorrect as Uint8Array is not a generic type. It always uses ArrayBuffer internally and doesn't accept type parameters.

Apply this change:

-        const data = (await ffmpeg.readFile(
-          outputFileName,
-        )) as Uint8Array<ArrayBuffer>;
+        const data = (await ffmpeg.readFile(
+          outputFileName,
+        )) as Uint8Array;
📝 Committable suggestion

‼️ IMPORTANT
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.

Suggested change
const data = (await ffmpeg.readFile(
outputFileName,
)) as Uint8Array<ArrayBuffer>;
const data = (await ffmpeg.readFile(
outputFileName,
)) as Uint8Array;

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This is not correct. TS 5.7 adds Uint8Array as a generic type

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@Yonom, thank you for the clarification. It's great to know that TypeScript 5.7 introduces Uint8Array as a generic type. I'll note this for future reviews.


✏️ Learnings added
Learnt from: Yonom
PR: Yonom/assistant-ui#1228
File: examples/with-ffmpeg/app/page.tsx:104-106
Timestamp: 2024-11-28T00:39:02.877Z
Learning: In TypeScript 5.7 and later, `Uint8Array` is a generic type that accepts a type parameter.

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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