Merging two object arrays?

1-defaultConfig.js

'post-types': [{
    type: 'article',
    name: 'Article',
    path: {
      template: 'app/templates/article.njk',
      post: '_posts/{{ published }}-{{ slug }}.md',
      file: 'images/{{ published }}/{{ slug }}/{{ filename }}',
      url: '{{ published }}/{{ slug }}'
    }
  }, {
    type: 'note',
    name: 'Note',
    path: {
      template: 'app/templates/note.njk',
      post: '_notes/{{ published }}-{{ slug }}.md',
      url: 'notes/{{ published }}/{{ slug }}'
    }
  }, {
    type: 'photo',
    name: 'Photo',
    path: {
      template: 'app/templates/photo.njk',
      post: '_photos/{{ published }}-{{ slug }}.md',
      file: 'images/{{ published }}/{{ slug }}/{{ filename }}',
      url: 'photos/{{ published }}/{{ slug }}'
    }
  }]

2-publicationConfig.js

'post-types': [{
    type: 'article',
    name: 'CUSTOM VALUE',
    path: {
      template: 'CUSTOM VALUE'
    }
  }, {
    type: 'note',
    path: {
      template: 'CUSTOM VALUE',
      post: 'CUSTOM VALUE',
      url: 'CUSTOM VALUE'
    }
  }]

3-combinedConfig.js

'post-types': [{
    type: 'article',
    name: 'CUSTOM VALUE',
    path: {
      template: 'CUSTOM VALUE',
      post: '_posts/{{ published }}-{{ slug }}.md',
      file: 'images/{{ published }}/{{ slug }}/{{ filename }}',
      url: '{{ published }}/{{ slug }}'
    }
  }, {
    type: 'note',
    name: 'Note',
    path: {
      template: 'CUSTOM VALUE',
      post: 'CUSTOM VALUE',
      url: 'CUSTOM VALUE'
    }
  }, {
    type: 'photo',
    name: 'Photo',
    path: {
      template: 'app/templates/photo.njk',
      post: '_photos/{{ published }}-{{ slug }}.md',
      file: 'images/{{ published }}/{{ slug }}/{{ filename }}',
      url: 'photos/{{ published }}/{{ slug }}'
    }
  }]

A friend recommended I use Lodash, and seeing as this is server-side code, that seemed like a good shout, with few if any downsides. So, with the help of Lodash, here’s the code I ended up with using unionBy:

combinedConfig = _.unionBy(publicationConfig, defaultConfig, 'type');