Refactor routing in App component to enhance navigation and improve error handling by integrating dynamic routes and updating the NotFound route.

node_modules/gray-matter/lib/utils.js

@@ -0,0 +1,66 @@
+'use strict';
+
+const stripBom = require('strip-bom-string');
+const typeOf = require('kind-of');
+
+exports.define = function(obj, key, val) {
+  Reflect.defineProperty(obj, key, {
+    enumerable: false,
+    configurable: true,
+    writable: true,
+    value: val
+  });
+};
+
+/**
+ * Returns true if `val` is a buffer
+ */
+
+exports.isBuffer = function(val) {
+  return typeOf(val) === 'buffer';
+};
+
+/**
+ * Returns true if `val` is an object
+ */
+
+exports.isObject = function(val) {
+  return typeOf(val) === 'object';
+};
+
+/**
+ * Cast `input` to a buffer
+ */
+
+exports.toBuffer = function(input) {
+  return typeof input === 'string' ? Buffer.from(input) : input;
+};
+
+/**
+ * Cast `val` to a string.
+ */
+
+exports.toString = function(input) {
+  if (exports.isBuffer(input)) return stripBom(String(input));
+  if (typeof input !== 'string') {
+    throw new TypeError('expected input to be a string or buffer');
+  }
+  return stripBom(input);
+};
+
+/**
+ * Cast `val` to an array.
+ */
+
+exports.arrayify = function(val) {
+  return val ? (Array.isArray(val) ? val : [val]) : [];
+};
+
+/**
+ * Returns true if `str` starts with `substr`.
+ */
+
+exports.startsWith = function(str, substr, len) {
+  if (typeof len !== 'number') len = substr.length;
+  return str.slice(0, len) === substr;
+};