tus-js-client-stall-detection/lib.esm/node/fileSignature.js

A pure JavaScript client for the tus resumable upload protocol

import { createHash } from 'node:crypto';
import { ReadStream } from 'node:fs';
import { stat } from 'node:fs/promises';
import * as path from 'node:path';
export async function fingerprint(file, options) {
    if (Buffer.isBuffer(file)) {
        // create MD5 hash for buffer type
        const blockSize = 64 * 1024; // 64kb
        const content = file.slice(0, Math.min(blockSize, file.length));
        const hash = createHash('md5').update(content).digest('hex');
        const ret = ['node-buffer', hash, file.length, options.endpoint].join('-');
        return ret;
    }
    if (file instanceof ReadStream && file.path != null) {
        const name = path.resolve(Buffer.isBuffer(file.path) ? file.path.toString('utf-8') : file.path);
        const info = await stat(file.path);
        const ret = ['node-file', name, info.size, info.mtime.getTime(), options.endpoint].join('-');
        return ret;
    }
    // fingerprint cannot be computed for file input type
    return null;
}
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