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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 | 3x 3x 3x 20x 3x 28x 3x 6x 2x 2x 4x | /* Store the previous location to be used when sending referrer on navigations */ let actualReferrer = '' let isFirstPage = true /** * Useful wrapper around document and window objects */ export const utils = { /** * @returns {string} The referrer of the document */ getDocumentReferrer: () => document.referrer, /** * @returns {boolean} Tell if it's the first time we're updating referrering */ checkIsFirstPage: () => isFirstPage, /** * @returns {string} The actual location with protocol, domain and pathname */ getActualLocation: () => { const {origin, pathname} = window.location return `${origin}${pathname}` } } /** * Get the correct page referrer for SPA navigations * @returns {string} referrer */ export const getPageReferrer = () => { // get the referrer from the previous location if available, fallback to the document return actualReferrer || utils.getDocumentReferrer() } /** * Update page referrer for SPA navigations */ export const updatePageReferrer = () => { // first time we call the update page we don't do nothing to keep correct referrer if (utils.checkIsFirstPage()) { isFirstPage = false return } // mutate actualReferrer with what will be the new referrer actualReferrer = utils.getActualLocation() } |