Function fetchJSON

src/server/web/auth/oauth-auth.ts:29–61

Minimal JSON fetch over https/http.

(url: string, opts?: { method?: string; body?: string; headers?: Record<string, string> })

/** Minimal JSON fetch over https/http. */
function fetchJSON<T>(url: string, opts?: { method?: string; body?: string; headers?: Record<string, string> }): Promise<T> {
  return new Promise((resolve, reject) => {
    const parsed = new URL(url);
    const isHttps = parsed.protocol === "https:";
    const req = (isHttps ? nodeRequest : nodeHttpRequest)(
      {
        hostname: parsed.hostname,
        port: parsed.port || (isHttps ? 443 : 80),
        path: parsed.pathname + parsed.search,
        method: opts?.method ?? "GET",
        headers: {
          "Content-Type": "application/x-www-form-urlencoded",
          Accept: "application/json",
          ...(opts?.headers ?? {}),
        },
      },
      (res) => {
        const chunks: Buffer[] = [];
        res.on("data", (c: Buffer) => chunks.push(c));
        res.on("end", () => {
          try {
            resolve(JSON.parse(Buffer.concat(chunks).toString("utf8")) as T);
          } catch (e) {
            reject(e);
          }
        });
      },
    );
    req.on("error", reject);
    if (opts?.body) req.write(opts.body);
    req.end();
  });
}

/**
 * OAuth2 / OIDC authentication adapter.