119a145549
requires further development. Key used to store file needs to be saved to expense to be later used for retrieval
18 lines
464 B
TypeScript
18 lines
464 B
TypeScript
import { crc32 } from 'crc';
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export async function computeCRC32Base64(file: File): Promise<string> {
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const arrayBuffer = await file.arrayBuffer();
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// Pass arrayBuffer directly to crc32
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let crc = crc32(arrayBuffer);
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crc >>>= 0;
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// Convert to 4-byte big-endian
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const buffer = new ArrayBuffer(4);
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const view = new DataView(buffer);
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view.setUint32(0, crc, false);
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// Base64 encode
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return btoa(String.fromCharCode(...new Uint8Array(buffer)));
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}
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