// Matches field identifiers starting with header, requestHeader, mobileHeader, // mobile_header, request_header // all optionally suffixed with a period and any non - line break characters const trackingHeaderFieldsRegex = /^(?:header\.?|request_?header\.?|mobile_?header\.?).*/i; export default candidateString => trackingHeaderFieldsRegex.test(String(candidateString)); export { trackingHeaderFieldsRegex };