INNER CODE UNIT · JavaScript

applyHeaders

expressjs/cors · lib/index.js:144

  function applyHeaders(headers, res) {
    for (var i = 0, n = headers.length; i < n; i++) {
      var header = headers[i];
      if (header) {
        if (Array.isArray(header)) {
          applyHeaders(header, res);
        } else if (header.key === 'Vary' && header.value) {
          vary(res, header.value);
        } else if (header.value) {
          res.setHeader(header.key, header.value);
        }
      }
    }
  }

  function cors(options, req, res, next) {
    var headers = [],
      method = req.method && req.method.toUpperCase && req.method.toUpperCase();

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