Initial working version

.gitignore

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+index.js
+package-lock.json
+node_modules

README.md

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+# babel-plugin-module-deps
+
+This Babel plugin redefines `require` within all (CJS) modules to record any
+required modules in an array of resolved filenames called `module.deps`.
+(Note that the array may have duplicates.)
+
+This lets a tool later discover what other modules this module depends on,
+by inspecting `require.cache[filename].deps`.
+
+## Usage
+
+Babel configuration:
+
+```json
+{
+  "plugins": ["babel-plugin-module-deps"]
+}
+```

index.coffee

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+module.exports = ({types}) ->
+  program = null
+  visitor:
+    Program: (path) ->
+      program = path
+      undefined
+  post: ->
+      program.unshiftContainer 'body',
+        types.expressionStatement types.assignmentExpression(
+          '='
+          types.identifier 'require'
+          types.callExpression(
+            types.arrowFunctionExpression(
+              [types.identifier 'r']
+              types.arrowFunctionExpression(
+                [types.identifier 'id']
+                types.sequenceExpression [
+                  types.callExpression(
+                    types.memberExpression(
+                      types.identifier 'console'
+                      types.identifier 'log'
+                    )
+                    [
+                      types.identifier '__filename'
+                      types.identifier 'id'
+                    ]
+                  )
+                  types.callExpression(
+                    types.memberExpression(
+                      types.memberExpression(
+                        types.identifier 'module'
+                        types.identifier 'deps'
+                      )
+                      types.identifier 'push'
+                    )
+                    [types.callExpression(
+                      types.memberExpression(
+                        types.identifier 'r'
+                        types.identifier 'resolve'
+                      )
+                      [types.identifier 'id']
+                    )]
+                  )
+                  types.callExpression(
+                    types.identifier 'r'
+                    [types.identifier 'id']
+                  )
+                ]
+              )
+            )
+            [types.identifier 'require']
+          )
+        )
+      program.unshiftContainer 'body',
+        types.expressionStatement types.assignmentExpression(
+          '='
+          types.memberExpression(
+            types.identifier 'module'
+            types.identifier 'deps'
+          )
+          types.arrayExpression()
+        )
+      undefined

package.json

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+{
+  "name": "babel-plugin-module-deps",
+  "version": "0.0.0",
+  "description": "Babel plugin to annotate CJS modules with what they require",
+  "main": "index.js",
+  "scripts": {
+    "prepare": "coffee --bare -c index.coffee"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/edemaine/babel-plugin-module-deps.git"
+  },
+  "author": {
+    "name": "Erik Demaine",
+    "email": "[email protected]",
+    "url": "http://erikdemaine.org/"
+  },
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/edemaine/babel-plugin-module-deps/issues"
+  },
+  "homepage": "https://github.com/edemaine/babel-plugin-module-deps#readme",
+  "devDependencies": {
+    "coffeescript": "^2.7.0"
+  }
+}