Added support for plugin relative imports

PLUGINS.md

@@ -44,6 +44,20 @@ dependancies. _Note that if the plugin is already installed and available in the
 node_modules folder, it will not be fetched again unless there is a version
 mismatch._
 
+## Plugin Dependencies
+
+From your plugins you may import any component of server code relative to the
+project root. An example could be:
+
+```js
+const cache = require('services/cache');
+```
+
+You may also include additioal external depenancies in your local packages by
+specifying a `package.json` at your plugin root which will result in a
+`node_modules` folder being generated at the plugin root with your specific
+dependencies.
+
 ## Server Plugins
 
 ### Specification

package.json

@@ -49,6 +49,7 @@
   },
   "homepage": "https://github.com/coralproject/talk#readme",
   "dependencies": {
+    "app-module-path": "^2.2.0",
     "bcrypt": "^1.0.2",
     "body-parser": "^1.17.1",
     "cli-table": "^0.3.1",

plugins.js

@@ -3,6 +3,9 @@ const path = require('path');
 const resolve = require('resolve');
 const debug = require('debug')('talk:plugins');
 
+// Add support for require rewriting.
+require('app-module-path').addPath(__dirname);
+
 let plugins = {};
 
 // Try to parse the plugins.json file, logging out an error if the plugins.json

yarn.lock

@@ -189,6 +189,10 @@ apollo-client@^0.8.3:
     "@types/graphql" "^0.8.0"
     "@types/isomorphic-fetch" "0.0.30"
 
+app-module-path@^2.2.0:
+  version "2.2.0"
+  resolved "https://registry.yarnpkg.com/app-module-path/-/app-module-path-2.2.0.tgz#641aa55dfb7d6a6f0a8141c4b9c0aa50b6c24dd5"
+
 "apparatus@>= 0.0.9":
   version "0.0.9"
   resolved "https://registry.yarnpkg.com/apparatus/-/apparatus-0.0.9.tgz#37dcd25834ad0b651076596291db823eeb1908bd"
@@ -6512,11 +6516,7 @@ react-apollo@^0.10.0:
   optionalDependencies:
     react-dom "0.14.x || 15.* || ^15.0.0"
 
-"react-dom@0.14.x || 15.* || ^15.0.0", react-dom@^15.3.1:
-  version "15.3.2"
-  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-15.3.2.tgz#c46b0aa5380d7b838e7a59c4a7beff2ed315531f"
-
-react-dom@^15.4.2:
+"react-dom@0.14.x || 15.* || ^15.0.0", react-dom@^15.3.1, react-dom@^15.4.2:
   version "15.4.2"
   resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-15.4.2.tgz#015363f05b0a1fd52ae9efdd3a0060d90695208f"
   dependencies:
@@ -6586,15 +6586,7 @@ react-tagsinput@^3.14.0:
   version "3.14.0"
   resolved "https://registry.yarnpkg.com/react-tagsinput/-/react-tagsinput-3.14.0.tgz#6729f8d5b313ed8fbb35496205ec2a97654af6bc"
 
-react@^15.3.1:
-  version "15.3.2"
-  resolved "https://registry.yarnpkg.com/react/-/react-15.3.2.tgz#a7bccd2fee8af126b0317e222c28d1d54528d09e"
-  dependencies:
-    fbjs "^0.8.4"
-    loose-envify "^1.1.0"
-    object-assign "^4.1.0"
-
-react@^15.4.2:
+react@^15.3.1, react@^15.4.2:
   version "15.4.2"
   resolved "https://registry.yarnpkg.com/react/-/react-15.4.2.tgz#41f7991b26185392ba9bae96c8889e7e018397ef"
   dependencies: