DefinitelyTyped/types/crc32-stream/crc32-stream-tests.ts

import { createReadStream } from 'fs';
import { CRC32Stream, DeflateCRC32Stream } from 'crc32-stream';

const readStream = createReadStream('test.txt');

const crc32 = new CRC32Stream(); // $ExpectType CRC32Stream
const deflated = new DeflateCRC32Stream(); // $ExpectType DeflateCRC32Stream

// CRC32 using pipe mode
crc32.on('end', () => {
    crc32.digest(); // $ExpectType Buffer
    crc32.digest('hex'); // $ExpectType string
    crc32.digest('base64'); // $ExpectType string
    crc32.digest('binary'); // $ExpectType string
    crc32.hex(); // $ExpectType string
    crc32.size(); // $ExpectType number
});
readStream.pipe(crc32);

// DeflateCRC32 using write mode
deflated.on('end', () => {
    deflated.digest(); // $ExpectType Buffer
    deflated.digest('hex'); // $ExpectType string
    deflated.digest('base64'); // $ExpectType string
    deflated.digest('binary'); // $ExpectType string
    deflated.hex(); // $ExpectType string
    deflated.size(); // $ExpectType number
    deflated.size(true); // $ExpectType number
});
deflated.write('Hello world!');
deflated.end();