shell script to update seed

update-seed.js

#!/usr/bin/env node

var fs = require('fs');
var join = require('path').join;

var EDC_HOME = process.env.EDC_HOME;

var seedPath = join(EDC_HOME, 'angular2-seed');


// update seed git repo
console.log('Updating seed (git pull)')
var exec = require('child_process').execSync;
var execOutput = exec('git pull', {cwd: seedPath});
console.log(execOutput.toString())


var targetPath = process.cwd();
var targetPackagePath = join(targetPath, 'package.json');

var seedPackage, targetPackage;

try {
  targetPackage = JSON.parse(fs.readFileSync(targetPackagePath, 'utf8'));
} catch (err) {
  console.log('unable to read package.json in this directory');
  process.exit(1);
}

try {
  seedPackage = JSON.parse(fs.readFileSync(join(seedPath,  'package.json'), 'utf8'));
} catch (err) {
  console.log('unable to read package.json in this directory');
  process.exit(1);
}

console.log('Checking ' + targetPackagePath + ' for updates from angular2-seed');

/* add ability to ignore specific npm modules via the target package.json configuration */

var mergeFields = ['devDependencies', 'dependencies'];

for (var i = 0 ; i < mergeFields.length; i++ ) {

  var field = mergeFields[i];

  if (seedPackage.hasOwnProperty(field)) {
    for (var package in seedPackage[field]) {

      // if a dependency is also in dev dependencies remove it from the dev dependencies
      if (field == 'dependencies' && targetPackage.devDependencies && targetPackage.devDependencies[package] ) {
        console.log('   * removing dependency from devDependencies : ' + package + ' ' + targetPackage.devDependencies[package]);
        delete targetPackage.devDependencies[package];
      }

      // log message for added or updated files
      if (!targetPackage[field] || !targetPackage[field][package]) {
        console.log('   * adding ' + field + ' : ' + package + ' ' + seedPackage[field][package]);
        targetPackage[field][package] = seedPackage[field][package];
      } else if (targetPackage[field][package] !== seedPackage[field][package]) {
        console.log('   * updating ' + field + ' : ' +  package + ' to ' + seedPackage[field][package] );
        targetPackage[field][package] = seedPackage[field][package];
      }


    }
  }

}

// replace master package.json
fs.writeFileSync(targetPackagePath, JSON.stringify(targetPackage, null, 2), 'utf8');


console.log('Copying seed files...');

// copy seed files!
var gulp = require(join(targetPath, 'node_modules', 'gulp'));

var complete = false;

gulp.task('copy', function() {
  return gulp.src([
    join(seedPath, 'tools', 'utils', 'seed*.ts'),
    join(seedPath, 'tools', 'config', 'seed*.ts'),
    join(seedPath, 'tools', 'tasks', 'seed', '*'),
    join(seedPath, 'tools', 'utils', 'seed', '*'),
    join(seedPath, 'tools', 'manual_typings', 'seed', '*'),
    join(seedPath, 'karma.conf.js'),
    join(seedPath, 'protractor.conf.js'),
    join(seedPath, 'test-main.js'),
    join(seedPath, 'typings.json')
    ], {base: seedPath})
    .pipe(gulp.dest(targetPath))
  ;

});

gulp.run('copy');

console.log('... complete');