refactor: move ipfs to peer deps

Doing this reduced the size of `node_modules` in the js-IPFS module
for me by about 300MB.

Does require the user to bring their own version, but they can
also skip installing go-IPFS if, for example, they are only going
to use js-IPFS.

.travis.yml

@@ -14,7 +14,11 @@ os:
   - osx
   - windows
 
-script: npx nyc -s npm run test:node -- --timeout 60000
+script:
+  - npm install ipfs
+  - npm install ipfs-http-client
+  - npm install go-ipfs-dep
+  - npx nyc -s npm run test:node -- --timeout 60000
 after_success: npx nyc report --reporter=text-lcov > coverage.lcov && npx codecov
 
 jobs:
@@ -31,25 +35,37 @@ jobs:
       addons:
         chrome: stable
       script:
+        - npm install ipfs
+        - npm install ipfs-http-client
+        - npm install go-ipfs-dep
         - npx aegir test -t browser -t webworker --bail --timeout 60000
 
     - stage: test
       name: firefox
       addons:
         firefox: latest
       script:
+        - npm install ipfs
+        - npm install ipfs-http-client
+        - npm install go-ipfs-dep
         - npx aegir test -t browser -t webworker --bail --timeout 60000 -- --browsers FirefoxHeadless
 
     - stage: test
       name: electron-main
       os: osx
       script:
+        - npm install ipfs
+        - npm install ipfs-http-client
+        - npm install go-ipfs-dep
         - npx aegir test -t electron-main --bail --timeout 60000
 
     - stage: test
       name: electron-renderer
       os: osx
       script:
+        - npm install ipfs
+        - npm install ipfs-http-client
+        - npm install go-ipfs-dep
         - npx aegir test -t electron-renderer --bail --timeout 60000
 notifications:
   email: false

README.md

@@ -32,6 +32,18 @@ Version 1.0.0 changed a bit the api and the options methods take so please read
 npm install --save ipfsd-ctl
 ```
 
+Please ensure your project also has dependencies on `ipfs`, `ipfs-http-client` and `go-ipfs-dep`.
+
+```sh
+npm install --save ipfs
+npm install --save ipfs-http-client
+npm install --save go-ipfs-dep
+```
+
+If you are only going to use the `go` implementation of IPFS, you can skip installing the `js` implementation and vice versa, though both will require the `ipfs-http-client` module.
+
+If you are only using the `proc` type in-process IPFS node, you can skip installing `go-ipfs-dep` and `ipfs-http-client`.
+
 ## Usage
 
 ### Spawning a single IPFS controller: `createController`

package.json

@@ -56,9 +56,6 @@
     "debug": "^4.1.1",
     "execa": "^4.0.0",
     "fs-extra": "^8.1.0",
-    "go-ipfs-dep": "~0.4.22",
-    "ipfs": "0.40.0",
-    "ipfs-http-client": "^41.0.0",
     "ipfs-utils": "^0.7.1",
     "ky": "^0.16.1",
     "ky-universal": "^0.3.0",
@@ -77,6 +74,11 @@
     "husky": "^4.0.10",
     "lint-staged": "^10.0.2"
   },
+  "peerDependencies": {
+    "go-ipfs-dep": "*",
+    "ipfs": "*",
+    "ipfs-http-client": "*"
+  },
   "repository": {
     "type": "git",
     "url": "git+https://github.com/ipfs/js-ipfsd-ctl.git"