Skip to content

type BufferSource has changed, causing my project to not pass #62168

@ltsg123

Description

@ltsg123

🔎 Search Terms

error TS2322: Type 'Uint8Array' is not assignable to type 'BufferSource'.

🕗 Version & Regression Information

  • This changed between versions 5.8.2__ and 5.9.2_
  • This changed in commit or PR _______
  • This is the behavior in every version I tried, and I reviewed the FAQ for entries about _________
  • I was unable to test this on prior versions because _______

⏯ Playground Link

No response

💻 Code

// TypeScript Crypto API Demo - Reproducing iv parameter type error
// For reporting issue to TypeScript team

// Simplified test function
async function testCryptoDecrypt() {
  // Create a Uint8Array as iv
  const iv = new Uint8Array([1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]);

  // Mock key and data
  const key = {} as CryptoKey;
  const data = new Uint8Array([1, 2, 3, 4, 5]);

  try {
    // This should report TypeScript error
    const result = await window.crypto.subtle.decrypt(
      {
        name: "AES-GCM",
        iv, // ❌ TypeScript error: Type 'Uint8Array' is not assignable to type 'BufferSource'
        tagLength: 128,
        additionalData: new Uint8Array([1, 2]),
      },
      key,
      data
    );

    console.log("Decryption successful:", result);
  } catch (error) {
    console.error("Decryption failed:", error);
  }
}

🙁 Actual behavior

When I upgraded ts to the latest version 5.9.2, I found that my project failed to compile with the error message

🙂 Expected behavior

I would like to confirm that this behavior is expected

Additional information about the issue

No response

Metadata

Metadata

Assignees

No one assigned

    Labels

    Working as IntendedThe behavior described is the intended behavior; this is not a bug

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions