@revoloo/cypress6/packages/server/lib/util/headers.js

Cypress.io end to end testing tool

const contentType = require('content-type')

module.exports = {
  getContentType (res) {
    try {
      return contentType.parse(res).type
    } catch (err) {
      // https://github.com/cypress-io/cypress/issues/3101
      return res.headers['content-type']
    }
  },

  hasContentType (res, type) {
    // does the response object have a content-type
    // that matches what we expect
    try {
      return contentType.parse(res).type === type
    } catch (err) {
      return false
    }
  },
}