log inputBlobReader instanceof Uint8Array,the console shows false

[hugetiny]

class BlobReader extends Reader {

	constructor(blob) {
		super();
		this.blob = blob;
		this.size = blob.size;
	}

	async readUint8Array(offset, length) {
		const reader = new FileReader();
		return new Promise((resolve, reject) => {
			reader.onload = event => resolve(new Uint8Array(event.target.result));
			reader.onerror = () => reject(reader.error);
			reader.readAsArrayBuffer(this.blob.slice(offset, offset + length));
		});
	}
}

in source code:BlobReader returns a Uint8Array

const inputBlobReader = new zip.BlobReader(inputBlob)

but when I log inputBlobReader instanceof Uint8Array,the console shows false
why?

[hugetiny]

const inputBlobReader = new zip.BlobReader(inputBlob);
const buffer = await inputBlobReader.readUint8Array(0,inputBlobReader.size)
console.log(buffer instanceof Uint8Array)// true
console.log(buffer.length)// 0

[gildas-lormeau]

Note that you shouldn't need to call readUint8Array in your code. This method is used internally by zip.js to retrieve data from a Reader.

[hugetiny]

Note that you shouldn't need to call readUint8Array in your code. This method is used internally by zip.js to retrieve data from a Reader.

I want to generate an unique code（hash） from a blob and that method only supports Uint8Array.And I don't want to readUint8Array twice for performance issue.

[gildas-lormeau]

That's indeed a legit use case ;) Maybe you could extend BlobReader.