Initialisation

Added the packages and files for the backend server

node_modules/graphql/utilities/astFromValue.d.ts

@@ -0,0 +1,28 @@
+import type { Maybe } from '../jsutils/Maybe';
+import type { ValueNode } from '../language/ast';
+import type { GraphQLInputType } from '../type/definition';
+/**
+ * Produces a GraphQL Value AST given a JavaScript object.
+ * Function will match JavaScript/JSON values to GraphQL AST schema format
+ * by using suggested GraphQLInputType. For example:
+ *
+ *     astFromValue("value", GraphQLString)
+ *
+ * A GraphQL type must be provided, which will be used to interpret different
+ * JavaScript values.
+ *
+ * | JSON Value    | GraphQL Value        |
+ * | ------------- | -------------------- |
+ * | Object        | Input Object         |
+ * | Array         | List                 |
+ * | Boolean       | Boolean              |
+ * | String        | String / Enum Value  |
+ * | Number        | Int / Float          |
+ * | Unknown       | Enum Value           |
+ * | null          | NullValue            |
+ *
+ */
+export declare function astFromValue(
+  value: unknown,
+  type: GraphQLInputType,
+): Maybe<ValueNode>;