Revert "Add yet-another-react-lightbox package and update .gitignore to exclude node_modules"

This reverts commit c92f4a5edd.

frontend/node_modules/eslint/lib/shared/assert.js

@@ -0,0 +1,22 @@
+/**
+ * @fileoverview Assertion utilities equivalent to the Node.js node:asserts module.
+ * @author Josh Goldberg
+ */
+
+"use strict";
+
+/**
+ * Throws an error if the input is not truthy.
+ * @param {unknown} value The input that is checked for being truthy.
+ * @param {string} message Message to throw if the input is not truthy.
+ * @returns {void}
+ * @throws {Error} When the condition is not truthy.
+ */
+function ok(value, message = "Assertion failed.") {
+    if (!value) {
+        throw new Error(message);
+    }
+}
+
+
+module.exports = ok;