up n_m

node_modules/@mdx-js/mdx/lib/util/estree-util-is-declaration.js

@@ -0,0 +1,25 @@
+/**
+ * @typedef {import('estree-jsx').Declaration} Declaration
+ * @typedef {import('estree-jsx').MaybeNamedClassDeclaration} MaybeNamedClassDeclaration
+ * @typedef {import('estree-jsx').MaybeNamedFunctionDeclaration} MaybeNamedFunctionDeclaration
+ * @typedef {import('estree-jsx').Node} Node
+ */
+
+// Fix to show references to above types in VS Code.
+''
+
+/**
+ * Check if `node` is a declaration.
+ *
+ * @param {Readonly<MaybeNamedClassDeclaration | MaybeNamedFunctionDeclaration | Node>} node
+ *   Node to check.
+ * @returns {node is Declaration | MaybeNamedClassDeclaration | MaybeNamedFunctionDeclaration}
+ *   Whether `node` is a declaration.
+ */
+export function isDeclaration(node) {
+  return Boolean(
+    node.type === 'FunctionDeclaration' ||
+      node.type === 'ClassDeclaration' ||
+      node.type === 'VariableDeclaration'
+  )
+}