How to use the @tanker/client-browser.fromBase64 function in @tanker/client-browser

async loadTextFromUser(userId) {
    const response = await this.serverApi.getUserData(userId);

    if (response.status === 404) return '';

    const encryptedText = await response.text();
    const encryptedData = fromBase64(encryptedText);
    const clear = await this.tanker.decrypt(encryptedData);
    return clear;
  }

onDecrypt = async () => {
    try {
      this.log('decryption', this.state.encryptedText);

      const binary = fromBase64(this.state.encryptedText, { timeout: 1000 });
      const clear = await this.tanker.decrypt(binary);

      this.setState({
        clearText: clear,
        encryptedText: ''
      });

      this.log('decryptionSuccess', clear);
    } catch (e) {
      this.log(e);
    }
  }