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

frontend/node_modules/eslint/lib/rules/no-sync.js

@@ -1,64 +0,0 @@
-/**
- * @fileoverview Rule to check for properties whose identifier ends with the string Sync
- * @author Matt DuVall<http://mattduvall.com/>
- * @deprecated in ESLint v7.0.0
- */
-
-"use strict";
-
-//------------------------------------------------------------------------------
-// Rule Definition
-//------------------------------------------------------------------------------
-
-/** @type {import('../shared/types').Rule} */
-module.exports = {
-    meta: {
-        deprecated: true,
-
-        replacedBy: [],
-
-        type: "suggestion",
-
-        docs: {
-            description: "Disallow synchronous methods",
-            recommended: false,
-            url: "https://eslint.org/docs/latest/rules/no-sync"
-        },
-
-        schema: [
-            {
-                type: "object",
-                properties: {
-                    allowAtRootLevel: {
-                        type: "boolean",
-                        default: false
-                    }
-                },
-                additionalProperties: false
-            }
-        ],
-
-        messages: {
-            noSync: "Unexpected sync method: '{{propertyName}}'."
-        }
-    },
-
-    create(context) {
-        const selector = context.options[0] && context.options[0].allowAtRootLevel
-            ? ":function MemberExpression[property.name=/.*Sync$/]"
-            : "MemberExpression[property.name=/.*Sync$/]";
-
-        return {
-            [selector](node) {
-                context.report({
-                    node,
-                    messageId: "noSync",
-                    data: {
-                        propertyName: node.property.name
-                    }
-                });
-            }
-        };
-
-    }
-};