Gulp build does not install dependencies automatically?

Question

Gulp build does not install dependencies automatically?

I use gulp to build my javascript application. I have some dependencies declared in the package.json file, for example:

"dependencies": {
    "flux": "^2.0.1",
    "keymirror": "~0.1.0",
    "object-assign": "^1.0.0",
    "react": "^0.13.1",
    "dropzone": "^4.0.1",
    "lodash": "^3.6.0"
  },

When I run gulp build, it always prompt me some dependency cannot be found unless I manually run npm install lodash for example.

Is there a way to have gulp run npm install automatically?

node.js
build
dependencies
npm
gulp

Answer 1

You require to have package.json on the root level.
Then once you have to run npm install for all the dependencies with --saveDev(development dependencies) or --save(project level dependencies).
Once this is done, for the next time only run npm install command will install dependent dependencies.