ETRS 1989 Jersey TM - EPSG:3109

WKT

PROJCS["ETRS_1989_Jersey_Transverse_Mercator", 
	GEOGCS["GCS_ETRS_1989", 
		DATUM["D_ETRS_1989", 
			SPHEROID["GRS_1980", 6378137.0, 298.257222101]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Transverse_Mercator"], 
	PARAMETER["False_Easting", 40000.0], 
	PARAMETER["False_Northing", 70000.0], 
	PARAMETER["Central_Meridian", -2.135], 
	PARAMETER["Scale_Factor", 0.9999999], 
	PARAMETER["Latitude_Of_Origin", 49.225], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["ETRS_1989_Jersey_Transverse_Mercator", 
	BASEGEOGCRS["GCS_ETRS_1989", 
		DATUM["D_ETRS_1989", 
			ELLIPSOID["GRS_1980", 6378137.0, 298.257222101]], 
		PRIMEM["Greenwich", 0.0], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	CONVERSION["Transverse_Mercator", 
		METHOD["Transverse_Mercator"], 
		PARAMETER["False_Easting", 40000.0], 
		PARAMETER["False_Northing", 70000.0], 
		PARAMETER["Central_Meridian", -2.135], 
		PARAMETER["Scale_Factor", 0.9999999], 
		PARAMETER["Latitude_Of_Origin", 49.225]], 
	CS[Cartesian, 2], 
	AXIS["Easting (X)", east, 
		ORDER[1]], 
	AXIS["Northing (Y)", north, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["EPSG", "3109"]]

Data from @esri/proj-codes

{
  "wkid": 3109,
  "latestWkid": 3109,
  "gcsWkid": 4258,
  "macro": "PE_PCS_ETRS_1989_JERSEY_TM",
  "name": "ETRS_1989_Jersey_Transverse_Mercator",
  "wkt": "PROJCS[\"ETRS_1989_Jersey_Transverse_Mercator\",GEOGCS[\"GCS_ETRS_1989\",DATUM[\"D_ETRS_1989\",SPHEROID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",40000.0],PARAMETER[\"False_Northing\",70000.0],PARAMETER[\"Central_Meridian\",-2.135],PARAMETER[\"Scale_Factor\",0.9999999],PARAMETER[\"Latitude_Of_Origin\",49.225],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"ETRS_1989_Jersey_Transverse_Mercator\",BASEGEOGCRS[\"GCS_ETRS_1989\",DATUM[\"D_ETRS_1989\",ELLIPSOID[\"GRS_1980\",6378137.0,298.257222101]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433]],CONVERSION[\"Transverse_Mercator\",METHOD[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",40000.0],PARAMETER[\"False_Northing\",70000.0],PARAMETER[\"Central_Meridian\",-2.135],PARAMETER[\"Scale_Factor\",0.9999999],PARAMETER[\"Latitude_Of_Origin\",49.225]],CS[Cartesian,2],AXIS[\"Easting (X)\",east,ORDER[1]],AXIS[\"Northing (Y)\",north,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"EPSG\",\"3109\"]]",
  "description": "ETRS 1989 Jersey TM",
  "authority": "EPSG",
  "version": "9.8.8(9.2.0)",
  "deprecated": "no",
  "areaname": "Jersey",
  "extent": {
    "slat": 48.87,
    "nlat": 49.44,
    "llon": -2.56,
    "rlon": -1.81
  }
}