diff --git a/src/verifyPatch.js b/src/verifyPatch.js
index d23c7ea..026caaf 100644
--- a/src/verifyPatch.js
+++ b/src/verifyPatch.js
@@ -1,8 +1,8 @@
 const getSettings = require("./settings").getSettings
 const getFileMode = require("./getFileMode")
 const extract = require("./extract")
-const { splatSet } = require("./utils")
 const { remapMessages } = require("./remapMessages")
+const { verifyWithSharedScopes } = require("./verifyWithSharedScopes")
 
 const PREPARE_RULE_NAME = "__eslint-plugin-html-prepare"
 
@@ -162,61 +162,3 @@ function verifyExternalHtmlPlugin(config, callOriginalVerify) {
     }),
   ]
 }
-
-function verifyWithSharedScopes(codeParts, verifyCodePart, parserOptions) {
-  // First pass: collect needed globals and declared globals for each script tags.
-  const firstPassValues = []
-
-  for (const codePart of codeParts) {
-    verifyCodePart(codePart, {
-      prepare(context) {
-        const globalScope = context.getScope()
-        // See https://github.com/eslint/eslint/blob/4b267a5c8a42477bb2384f33b20083ff17ad578c/lib/rules/no-redeclare.js#L67-L78
-        let scopeForDeclaredGlobals
-        if (
-          parserOptions.ecmaFeatures &&
-          parserOptions.ecmaFeatures.globalReturn
-        ) {
-          scopeForDeclaredGlobals = globalScope.childScopes[0]
-        } else {
-          scopeForDeclaredGlobals = globalScope
-        }
-
-        firstPassValues.push({
-          codePart,
-          exportedGlobals: globalScope.through.map(
-            (node) => node.identifier.name
-          ),
-          declaredGlobals: scopeForDeclaredGlobals.variables.map(
-            (variable) => variable.name
-          ),
-        })
-      },
-      ignoreRules: true,
-    })
-  }
-
-  // Second pass: declare variables for each script scope, then run eslint.
-  for (let i = 0; i < firstPassValues.length; i += 1) {
-    verifyCodePart(firstPassValues[i].codePart, {
-      prepare(context) {
-        const exportedGlobals = splatSet(
-          firstPassValues
-            .slice(i + 1)
-            .map((nextValues) => nextValues.exportedGlobals)
-        )
-        for (const name of exportedGlobals) context.markVariableAsUsed(name)
-
-        const declaredGlobals = splatSet(
-          firstPassValues
-            .slice(0, i)
-            .map((previousValues) => previousValues.declaredGlobals)
-        )
-        const scope = context.getScope()
-        scope.through = scope.through.filter((variable) => {
-          return !declaredGlobals.has(variable.identifier.name)
-        })
-      },
-    })
-  }
-}
diff --git a/src/verifyWithSharedScopes.js b/src/verifyWithSharedScopes.js
new file mode 100644
index 0000000..190ec71
--- /dev/null
+++ b/src/verifyWithSharedScopes.js
@@ -0,0 +1,61 @@
+const { splatSet } = require("./utils")
+
+module.exports = { verifyWithSharedScopes }
+
+function verifyWithSharedScopes(codeParts, verifyCodePart, parserOptions) {
+  // First pass: collect needed globals and declared globals for each script tags.
+  const firstPassValues = []
+
+  for (const codePart of codeParts) {
+    verifyCodePart(codePart, {
+      prepare(context) {
+        const globalScope = context.getScope()
+        // See https://github.com/eslint/eslint/blob/4b267a5c8a42477bb2384f33b20083ff17ad578c/lib/rules/no-redeclare.js#L67-L78
+        let scopeForDeclaredGlobals
+        if (
+          parserOptions.ecmaFeatures &&
+          parserOptions.ecmaFeatures.globalReturn
+        ) {
+          scopeForDeclaredGlobals = globalScope.childScopes[0]
+        } else {
+          scopeForDeclaredGlobals = globalScope
+        }
+
+        firstPassValues.push({
+          codePart,
+          exportedGlobals: globalScope.through.map(
+            (node) => node.identifier.name
+          ),
+          declaredGlobals: scopeForDeclaredGlobals.variables.map(
+            (variable) => variable.name
+          ),
+        })
+      },
+      ignoreRules: true,
+    })
+  }
+
+  // Second pass: declare variables for each script scope, then run eslint.
+  for (let i = 0; i < firstPassValues.length; i += 1) {
+    verifyCodePart(firstPassValues[i].codePart, {
+      prepare(context) {
+        const exportedGlobals = splatSet(
+          firstPassValues
+            .slice(i + 1)
+            .map((nextValues) => nextValues.exportedGlobals)
+        )
+        for (const name of exportedGlobals) context.markVariableAsUsed(name)
+
+        const declaredGlobals = splatSet(
+          firstPassValues
+            .slice(0, i)
+            .map((previousValues) => previousValues.declaredGlobals)
+        )
+        const scope = context.getScope()
+        scope.through = scope.through.filter((variable) => {
+          return !declaredGlobals.has(variable.identifier.name)
+        })
+      },
+    })
+  }
+}