diff --git a/packages/gatsby-link/src/is-local-link.js b/packages/gatsby-link/src/is-local-link.js
index b97c7a1915f5f..6ac72e3740332 100644
--- a/packages/gatsby-link/src/is-local-link.js
+++ b/packages/gatsby-link/src/is-local-link.js
@@ -1,13 +1,13 @@
-// Copied from https://github.com/sindresorhus/is-absolute-url/blob/3ab19cc2e599a03ea691bcb8a4c09fa3ebb5da4f/index.js
-const ABSOLUTE_URL_REGEX = /^[a-zA-Z][a-zA-Z\d+\-.]*?:/
-const isAbsolute = path => ABSOLUTE_URL_REGEX.test(path)
+const ABSOLUTE_URL_REGEX = /^[a-zA-Z][a-zA-Z\d+\-.]*:\/\//
 
-export const isLocalLink = path => {
+function isAbsolute(path) {
+  return ABSOLUTE_URL_REGEX.test(path)
+}
+
+export function isLocalLink(path) {
   if (typeof path !== `string`) {
     return undefined
-    // TODO(v5): Re-Add TypeError
-    // throw new TypeError(`Expected a \`string\`, got \`${typeof path}\``)
   }
-
+  if (!path) return false
   return !isAbsolute(path)
 }