Snippet

Streaming and Visualizing Binary Datasets Using Reactive Uint8Array Slices

Handling high-frequency binary data such as audio streams or sensor telemetry requires typed array views over contiguous memory buffers. By storing the underlying ArrayBuffer in a reactive reference and tracking byte offsets, components can compute efficient typed subarrays (Uint8Array) without copying massive data structures on every write cycle.

snippet.js

javascript

import { ref, computed } from 'vue';
 
export function useBinaryStream(bufferCapacity = 256) {
  const rawBuffer = ref(new ArrayBuffer(bufferCapacity));
  const byteLength = ref(0);
 
  const uint8View = computed(() => new Uint8Array(rawBuffer.value, 0, byteLength.value));
 
  function appendChunk(chunk: Uint8Array): void {
    const available = bufferCapacity - byteLength.value;
    const copyLength = Math.min(available, chunk.byteLength);
    
    const targetView = new Uint8Array(rawBuffer.value);
    targetView.set(chunk.subarray(0, copyLength), byteLength.value);
    byteLength.value += copyLength;
  }
 
  function reset(): void {
    new Uint8Array(rawBuffer.value).fill(0);
    byteLength.value = 0;
  }
 
  return { uint8View, byteLength, appendChunk, reset };
}

vue

Breakdown

const rawBuffer = ref(new ArrayBuffer(bufferCapacity));

Allocates a fixed-size raw binary memory buffer stored within a Vue reactive reference.

const uint8View = computed(() => new Uint8Array(rawBuffer.value, 0, byteLength.value));

Computes a subarray typed view reflecting the current valid byte span without copying memory.

targetView.set(chunk.subarray(0, copyLength), byteLength.value);

Copies incoming typed array slice bytes into the target buffer at the current byte offset index.

new Uint8Array(rawBuffer.value).fill(0);

Zeroes out underlying memory bytes using typed array fill during stream reset operations.

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Streaming and Visualizing Binary Datasets Using Reactive Uint8Array Slices

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