Function exchangeRefreshToken

microsoft-email.js:82–111

(clientId, refreshToken, options = {})

  }

  async function exchangeRefreshToken(clientId, refreshToken, options = {}) {
    const fetchImpl = getFetchImpl(options.fetchImpl);
    const strategy = resolveTokenStrategy(options.strategyName);
    const body = new URLSearchParams({
      client_id: clientId,
      grant_type: 'refresh_token',
      refresh_token: refreshToken,
      ...(strategy.extraData || {}),
    });
    const response = await fetchImpl(strategy.url, {
      method: 'POST',
      headers: { 'Content-Type': 'application/x-www-form-urlencoded' },
      body: body.toString(),
      signal: options.signal,
    });

    if (!response.ok) {
      throw new Error(`${strategy.name}: ${await getResponseErrorText(response)}`);
    }

    const data = await response.json();
    if (!data.access_token) {
      throw new Error(`${strategy.name}: token response missing access_token`);
    }

    return {
      ...data,
      tokenStrategy: strategy.name,
    };
  }

  async function fetchGraphMessages(accessToken, options = {}) {
    const fetchImpl = getFetchImpl(options.fetchImpl);