iwstkhr

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import fs from 'fs';

export async function download(url: string, file: string): Promise<void> {
  const response = await fetch(url);
  if (!response.ok) {
    return;
  }
  const data = Buffer.from(await response.arrayBuffer());
  fs.writeFileSync(file, data);
}

iwstkhr

def hiragana_to_katakana(src: str) -> str:
    result = ''
    for char in src:
        code = ord(char)
        result += chr(code + 96) if 12352 < code < 12439 else char
    return result


print(hiragana_to_katakana('てすと'))
# It outputs 'テスト'.

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from datetime import datetime

from pytest_mock import MockerFixture


def test_your_function(mocker: MockerFixture):
    now = datetime.strptime('2024-01-02 12:34:56', '%Y-%m-%d %H:%M:%S')
    mock = mocker.MagicMock(wraps=datetime)
    mock.now.return_value = now
    mocker.patch('src.your_module.datetime', new=mock)

iwstkhr

export async function getHashByUrl(url: string): Promise<string> {
  // https://developer.mozilla.org/en-US/docs/Web/API/SubtleCrypto/digest
  const uint8  = new TextEncoder().encode(url);
  const digest = await crypto.subtle.digest('SHA-256', uint8);
  return Array.from(new Uint8Array(digest)).map(b => b.toString(16).padStart(2,'0')).join('');
}

iwstkhr

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