migrate_dependency.js

var pkg = require('./package.json');
var exec = require('child_process').exec;
var fs = require('fs');
var path = require('path');

var packages = fs.readdirSync('packages');

packages.forEach(function(dir) {
  var p = path.join('./packages/', dir, '/package.json');
  var pkg = JSON.parse(fs.readFileSync(p));
  if (
    pkg.dependencies &&
    (pkg.dependencies['turf-point'] ||
    pkg.dependencies['turf-polygon'] ||
    pkg.dependencies['turf-linestring'] ||
    pkg.dependencies['turf-featurecollection'])) {
      pkg.dependencies['turf-helpers'] = '^1.0.0';
      delete pkg.dependencies['turf-point'];
      delete pkg.dependencies['turf-polygon'];
      delete pkg.dependencies['turf-linestring'];
      delete pkg.dependencies['turf-featurecollection'];
      fs.writeFileSync(p,
        JSON.stringify(pkg, null, 2));
    }
});