Merge pull request #211 from benmosher/issue-202-hoisting

hoisting

Author: benmosher

src/rules/namespace.js

@@ -14,37 +14,43 @@ module.exports = function (context) {
 
   return {
 
-    'ImportDeclaration': function (declaration) {
-      if (declaration.specifiers.length === 0) return
+    // pick up all imports at body entry time, to properly respect hoisting
+    'Program': function ({ body }) {
+      function processBodyStatement(declaration) {
+        if (declaration.type !== 'ImportDeclaration') return
 
-      const imports = Exports.get(declaration.source.value, context)
-      if (imports == null) return null
+        if (declaration.specifiers.length === 0) return
 
-      if (imports.errors.length) {
-        imports.reportErrors(context, declaration)
-        return
-      }
+        const imports = Exports.get(declaration.source.value, context)
+        if (imports == null) return null
+
+        if (imports.errors.length) {
+          imports.reportErrors(context, declaration)
+          return
+        }
 
-      for (let specifier of declaration.specifiers) {
-        switch (specifier.type) {
-          case 'ImportNamespaceSpecifier':
-            if (!imports.hasNamed) {
-              context.report(specifier,
-                `No exported names found in module '${declaration.source.value}'.`)
+        for (let specifier of declaration.specifiers) {
+          switch (specifier.type) {
+            case 'ImportNamespaceSpecifier':
+              if (!imports.hasNamed) {
+                context.report(specifier,
+                  `No exported names found in module '${declaration.source.value}'.`)
+              }
+              namespaces.set(specifier.local.name, imports.named)
+              break
+            case 'ImportDefaultSpecifier':
+            case 'ImportSpecifier': {
+              const meta = imports.named.get(
+                // default to 'default' for default http://i.imgur.com/nj6qAWy.jpg
+                specifier.imported ? specifier.imported.name : 'default')
+              if (!meta || !meta.namespace) break
+              namespaces.set(specifier.local.name, meta.namespace)
+              break
             }
-            namespaces.set(specifier.local.name, imports.named)
-            break
-          case 'ImportDefaultSpecifier':
-          case 'ImportSpecifier': {
-            const meta = imports.named.get(
-              // default to 'default' for default http://i.imgur.com/nj6qAWy.jpg
-              specifier.imported ? specifier.imported.name : 'default')
-            if (!meta || !meta.namespace) break
-            namespaces.set(specifier.local.name, meta.namespace)
-            break
           }
         }
       }
+      body.forEach(processBodyStatement)
     },
 
     // same as above, but does not add names to local map

src/rules/no-deprecated.js

@@ -6,6 +6,7 @@ module.exports = function (context) {
       , namespaces = new Map()
 
   function checkSpecifiers(node) {
+    if (node.type !== 'ImportDeclaration') return
     if (node.source == null) return // local export, ignore
 
     const imports = Exports.get(node.source.value, context)
@@ -64,7 +65,7 @@ module.exports = function (context) {
   }
 
   return {
-    'ImportDeclaration': checkSpecifiers,
+    'Program': ({ body }) => body.forEach(checkSpecifiers),
 
     'Identifier': function (node) {
       if (node.parent.type === 'MemberExpression' && node.parent.property === node) {

tests/src/rules/namespace.js

@@ -68,6 +68,13 @@ const valid = [
     parser: 'babel-eslint',
   }),
 
+  // respect hoisting
+  test({
+    code:
+      'function x() { console.log((names.b).c); } ' +
+      'import * as names from "./named-exports"; ',
+  }),
+
 ]
 
 const invalid = [
@@ -138,6 +145,21 @@ const invalid = [
     code: "import b from './deep/default'; console.log(b.e)",
     errors: [ "'e' not found in imported namespace 'b'." ],
   }),
+
+  // respect hoisting
+  test({
+    code:
+      'console.log(names.c);' +
+      "import * as names from './named-exports'; ",
+    errors: [error('c', 'names')],
+  }),
+  test({
+    code:
+      'function x() { console.log(names.c) } ' +
+      "import * as names from './named-exports'; ",
+    errors: [error('c', 'names')],
+  }),
+
 ]
 
 ///////////////////////

tests/src/rules/no-deprecated.js

@@ -134,3 +134,25 @@ ruleTester.run('no-deprecated', rule, {
     }),
   ],
 })
+
+ruleTester.run('no-deprecated: hoisting', rule, {
+  valid: [
+
+    test({
+      code: "function x(deepDep) { console.log(deepDep.MY_TERRIBLE_ACTION) } import { deepDep } from './deep-deprecated'",
+    }),
+
+  ],
+
+  invalid: [
+
+    test({
+      code: "console.log(MY_TERRIBLE_ACTION); import { MY_TERRIBLE_ACTION } from './deprecated'",
+      errors: [
+        { type: 'Identifier', message: 'Deprecated: please stop sending/handling this action type.' },
+        { type: 'ImportSpecifier', message: 'Deprecated: please stop sending/handling this action type.' },
+      ],
+    }),
+
+  ],
+})