Replace periscopic with estree-util-scope

periscopic is no longer maintained.

Author: remcohaszing

lib/recma-nextjs-static-props.js

@@ -3,7 +3,8 @@
  * @import { Plugin } from 'unified'
  */
 
-import { analyze } from 'periscopic'
+import { createVisitors } from 'estree-util-scope'
+import { walk } from 'estree-walker'
 import { define } from 'unist-util-mdx-define'
 
 /**
@@ -53,39 +54,43 @@ function passTest(test, value) {
 const recmaNextjsStaticProps =
   ({ exclude, include, name = 'getStaticProps' } = {}) =>
   (ast, file) => {
-    /**
-     * @type {string[]}
-     */
-    const identifiers = []
-    const { scope } = analyze(ast)
+    const visitors = createVisitors()
 
-    for (const [id, node] of scope.declarations) {
-      if (id === name) {
-        return
-      }
+    walk(ast, {
+      enter(node) {
+        if (
+          node.type === 'ArrowFunctionExpression' ||
+          node.type === 'ClassDeclaration' ||
+          node.type === 'ClassExpression' ||
+          node.type === 'FunctionDeclaration' ||
+          node.type === 'FunctionExpression'
+        ) {
+          this.skip()
+          return
+        }
+
+        visitors.enter(node)
+      },
 
+      leave: visitors.exit
+    })
+
+    const identifiers = visitors.scopes[0].defined.filter((id) => {
       // Always filter JSX functions generated by MDX.
       if (id === '_jsx' || id === '_jsxs' || id === '_Fragment') {
-        continue
+        return false
       }
 
       if (exclude && exclude.some((test) => passTest(test, id))) {
-        continue
+        return false
       }
 
       if (include && !include.some((test) => passTest(test, id))) {
-        continue
+        return false
       }
 
-      // We’re not insterested in for example function or class declarations.
-      if (
-        node.type === 'ImportDefaultSpecifier' ||
-        node.type === 'ImportSpecifier' ||
-        node.type === 'VariableDeclaration'
-      ) {
-        identifiers.push(id)
-      }
-    }
+      return true
+    })
 
     if (!identifiers.length) {
       return

package-lock.json

@@ -34,7 +34,8 @@
   },
   "dependencies": {
     "@types/estree": "^1.0.0",
-    "periscopic": "^3.0.0",
+    "estree-util-scope": "^1.0.0",
+    "estree-walker": "^3.0.0",
     "unified": "^11.0.0",
     "unist-util-mdx-define": "^1.0.0"
   },