JSFiddle - React, Tailwind, and code Playground

JavaScript

var dataRows = [{
    id: 1,
    geom: "LINESTRING(-1.131510412 52.65531, -1.13286 52.65559)"
}];
features = [];
dataRows.forEach(function (row) {
    var coords = row.geom.replace("(", "[").substring(row.geom.indexOf("("), row.geom.length);
    features.push({
        "type": "Feature",
            "properties": {
            "id": row.id
        },
        "geometry": {
            "type": row.geom.substring(0, row.geom.indexOf("(")),
            "coordinates": coords
        }
    });
});

console.log(JSON.stringify(features[0]));