How to use osrm - 1 common examples

process.on('message', function (e) {
  process.send({type: 'status', data: 'srv_started', id: e.id});
  const {
    id,
    poi: poiByType,
    villages,
    osrmFile,
    adminArea,
    gridSize,
    maxTime,
    maxSpeed
  } = e;

  const osrm = new OSRM(osrmFile);
  process.send({type: 'status', data: 'srv_loaded_files', id: id});

  // Split the input region in squares for parallelisation.
  let box = envelope(adminArea);
  let extent = [box.geometry.coordinates[0][0][0], box.geometry.coordinates[0][0][1], box.geometry.coordinates[0][2][0], box.geometry.coordinates[0][2][1]];
  let squares = squareGrid(extent, gridSize || 30, 'kilometers').features;
  process.send({type: 'squarecount', data: squares.length, id: id});

  // Create a task for each square to be run below.
  var squareTasks = squares.map(square => {
    // Clip the square with the input geometry. In this way we work with a
    // smaller area..
    let workArea = intersect(adminArea, square);
    return createProcessAreaTask(workArea, poiByType, villages, osrm, maxTime, maxSpeed, id);
  });