Blob.isValid

import { Blob } from 'tevm';

// Validate before expensive operations
if (Blob.isValid(data)) {
  const commitment = Blob.toCommitment(data);
  const proof = Blob.toProof(data);
} else {
  // Encode data into blob format
  const blob = Blob.fromData(data);
}

import { Blob, type BrandedBlob } from 'tevm';

function assertBlob(value: Uint8Array): asserts value is BrandedBlob {
  if (!Blob.isValid(value)) {
    throw new Error(`Invalid blob size: ${value.length}`);
  }
}

// Usage
const data = new Uint8Array(131072);
assertBlob(data); // Throws if invalid
// data is now typed as BrandedBlob