refactor: extract remove-extraneous-import

Author: haoqunjiang

generator/codemods/global-api/index.js

@@ -13,32 +13,11 @@ module.exports = function(fileInfo, api) {
   require('./remove-contextual-h')(context)
 
   // remove extraneous imports
+  const removeExtraneousImport = require('../utils/remove-extraneous-import')
   removeExtraneousImport(context, 'Vue')
   removeExtraneousImport(context, 'Vuex')
   removeExtraneousImport(context, 'VueRouter')
 
   return root.toSource({ lineTerminator: '\n' })
 }
 
-/**
- * @param {Object} context
- * @param {import('jscodeshift').JSCodeshift} context.j
- * @param {ReturnType<import('jscodeshift').Core>} context.root
- */
-function removeExtraneousImport({ root, j }, name) {
-  const localUsages = root.find(j.Identifier, { name })
-  if (localUsages.length === 1) {
-    const importDecl = localUsages.closest(j.ImportDeclaration)
-    
-    if (!importDecl.length) {
-      return
-    }
-
-    if (importDecl.get(0).node.specifiers.length === 1) {
-      importDecl.remove()
-    } else {
-      localUsages.closest(j.ImportSpecifier).remove()
-      localUsages.closest(j.ImportDefaultSpecifier).remove()
-    }
-  }
-}

generator/codemods/utils/remove-extraneous-import.js

@@ -0,0 +1,22 @@
+/**
+ * @param {Object} context
+ * @param {import('jscodeshift').JSCodeshift} context.j
+ * @param {ReturnType<import('jscodeshift').Core>} context.root
+ */
+function removeExtraneousImport({ root, j }, name) {
+  const localUsages = root.find(j.Identifier, { name })
+  if (localUsages.length === 1) {
+    const importDecl = localUsages.closest(j.ImportDeclaration)
+    
+    if (!importDecl.length) {
+      return
+    }
+
+    if (importDecl.get(0).node.specifiers.length === 1) {
+      importDecl.remove()
+    } else {
+      localUsages.closest(j.ImportSpecifier).remove()
+      localUsages.closest(j.ImportDefaultSpecifier).remove()
+    }
+  }
+}