update to get-workspaces plugin (#32)

* update to get-workspaces plugin

* fix build to include index so this is isntallable

.changeset/modern-windows-appear.md

@@ -0,0 +1,5 @@
+---
+"@manypkg/gatsby-source-workspace": minor
+---
+
+Add new config option, which allows the user to specify the package.json fields they want to include

.changeset/old-knives-smile.md

@@ -0,0 +1,5 @@
+---
+"@manypkg/gatsby-source-workspace": patch
+---
+
+Include `version` field by default

packages/gatsby-source-workspace/gatsby-node.js

@@ -10,31 +10,36 @@ to 'meta' - this might still be the wrong name but I want to try it out.
 (meta represents the full contents of the package.json)
 */
 
-exports.createSchemaCustomization = ({ actions }) => {
+exports.createSchemaCustomization = ({ actions }, { extraFields }) => {
   let { createTypes } = actions;
 
   let typeDefs = `
       type workspaceInfo implements Node {
         name: String
+        version: String
         dir: String
         relativeDir: String
         manifest: JSON!
+        ${extraFields
+          .map(({ name, definition }) => `${name}: ${definition}`)
+          .join("\n        ")}
       }
     `;
   createTypes(typeDefs);
 };
 
-exports.sourceNodes = async ({ actions }, pluginOptions) => {
+exports.sourceNodes = async ({ actions }, { cwd, extraFields }) => {
   let { createNode } = actions;
-  let cwd = pluginOptions.cwd || process.cwd();
+  cwd = cwd || process.cwd();
   let repoRoot = await findWorkspacesRoot(cwd);
   let workspaces = await getWorkspaces({ cwd: repoRoot });
 
   for (let { name, dir, config: manifest } of workspaces) {
-    createNode({
+    let newNode = {
       name,
       dir,
       relativeDir: path.relative(cwd, dir),
+      version: manifest.version,
       manifest,
       id: name,
       internal: {
@@ -43,6 +48,12 @@ exports.sourceNodes = async ({ actions }, pluginOptions) => {
         }),
         type: "workspaceInfo"
       }
+    };
+
+    extraFields.forEach(({ name }) => {
+      newNode[name] = manifest[name];
     });
+
+    createNode(newNode);
   }
 };

packages/gatsby-source-workspace/package.json

@@ -15,6 +15,7 @@
     "get-workspaces": "^0.5.0"
   },
   "files": [
-    "gatsby-node.js"
+    "gatsby-node.js",
+    "index.js"
   ]
 }

test-gatsby/gatsby-config.js

@@ -14,7 +14,17 @@ async function getGatsbyConfig() {
           path: `${__dirname}/src/pages`
         }
       },
-      "@manypkg/gatsby-source-workspace",
+      {
+        resolve: "@manypkg/gatsby-source-workspace",
+        options: {
+          extraFields: [
+            {
+              name: "license",
+              definition: `String`
+            }
+          ]
+        }
+      },
       {
         resolve: `gatsby-source-filesystem`,
         options: {