// List of issue types in completeissuetypelist.txt let completeIssueTypes = [ "ADR", "ALN", "CL", "CF", "CS", "CLRT", "CSRT", "CPRT", "VB", "CP", "DEB", "DR", "DRRT", "ETF", "ETMF", "ETN", "ETV", "ETC", "FRC", "FRG", "FX", "FU", "BD", "GB", "IN", "IDR", "MMF", "MF", "OF", "OP", "PS", "PR", "PRRT", "RT", "SRN", "UT", "UTRT", "WT" ]; // List of issue types in excelissuetypes.txt let excelIssueTypes = [ "CF", "CL", "CLRT", "CP", "CPRT", "CS", "CSRT", "DEB", "DR", "DRRT", "ETF", "ETN", "FU", "FX", "GB", "IN", "MF", "MMF", "OF", "PR", "PRRT", "PS", "RT", "SRN", "UT", "UTRT", "WT" ]; // Find the issue types that are in completeIssueTypes but not in excelIssueTypes let missingIssueTypes = completeIssueTypes.filter(issueType => !excelIssueTypes.includes(issueType)); console.log(missingIssueTypes);