Initialisation

Added the packages and files for the backend server

node_modules/graphql/execution/execute.d.ts

@@ -0,0 +1,185 @@
+import type { Maybe } from '../jsutils/Maybe';
+import type { ObjMap } from '../jsutils/ObjMap';
+import type { Path } from '../jsutils/Path';
+import type { PromiseOrValue } from '../jsutils/PromiseOrValue';
+import type { GraphQLFormattedError } from '../error/GraphQLError';
+import { GraphQLError } from '../error/GraphQLError';
+import type {
+  DocumentNode,
+  FieldNode,
+  FragmentDefinitionNode,
+  OperationDefinitionNode,
+} from '../language/ast';
+import type {
+  GraphQLField,
+  GraphQLFieldResolver,
+  GraphQLObjectType,
+  GraphQLResolveInfo,
+  GraphQLTypeResolver,
+} from '../type/definition';
+import type { GraphQLSchema } from '../type/schema';
+/**
+ * Terminology
+ *
+ * "Definitions" are the generic name for top-level statements in the document.
+ * Examples of this include:
+ * 1) Operations (such as a query)
+ * 2) Fragments
+ *
+ * "Operations" are a generic name for requests in the document.
+ * Examples of this include:
+ * 1) query,
+ * 2) mutation
+ *
+ * "Selections" are the definitions that can appear legally and at
+ * single level of the query. These include:
+ * 1) field references e.g `a`
+ * 2) fragment "spreads" e.g. `...c`
+ * 3) inline fragment "spreads" e.g. `...on Type { a }`
+ */
+/**
+ * Data that must be available at all points during query execution.
+ *
+ * Namely, schema of the type system that is currently executing,
+ * and the fragments defined in the query document
+ */
+export interface ExecutionContext {
+  schema: GraphQLSchema;
+  fragments: ObjMap<FragmentDefinitionNode>;
+  rootValue: unknown;
+  contextValue: unknown;
+  operation: OperationDefinitionNode;
+  variableValues: {
+    [variable: string]: unknown;
+  };
+  fieldResolver: GraphQLFieldResolver<any, any>;
+  typeResolver: GraphQLTypeResolver<any, any>;
+  subscribeFieldResolver: GraphQLFieldResolver<any, any>;
+  errors: Array<GraphQLError>;
+}
+/**
+ * The result of GraphQL execution.
+ *
+ *   - `errors` is included when any errors occurred as a non-empty array.
+ *   - `data` is the result of a successful execution of the query.
+ *   - `extensions` is reserved for adding non-standard properties.
+ */
+export interface ExecutionResult<
+  TData = ObjMap<unknown>,
+  TExtensions = ObjMap<unknown>,
+> {
+  errors?: ReadonlyArray<GraphQLError>;
+  data?: TData | null;
+  extensions?: TExtensions;
+}
+export interface FormattedExecutionResult<
+  TData = ObjMap<unknown>,
+  TExtensions = ObjMap<unknown>,
+> {
+  errors?: ReadonlyArray<GraphQLFormattedError>;
+  data?: TData | null;
+  extensions?: TExtensions;
+}
+export interface ExecutionArgs {
+  schema: GraphQLSchema;
+  document: DocumentNode;
+  rootValue?: unknown;
+  contextValue?: unknown;
+  variableValues?: Maybe<{
+    readonly [variable: string]: unknown;
+  }>;
+  operationName?: Maybe<string>;
+  fieldResolver?: Maybe<GraphQLFieldResolver<any, any>>;
+  typeResolver?: Maybe<GraphQLTypeResolver<any, any>>;
+  subscribeFieldResolver?: Maybe<GraphQLFieldResolver<any, any>>;
+}
+/**
+ * Implements the "Executing requests" section of the GraphQL specification.
+ *
+ * Returns either a synchronous ExecutionResult (if all encountered resolvers
+ * are synchronous), or a Promise of an ExecutionResult that will eventually be
+ * resolved and never rejected.
+ *
+ * If the arguments to this function do not result in a legal execution context,
+ * a GraphQLError will be thrown immediately explaining the invalid input.
+ */
+export declare function execute(
+  args: ExecutionArgs,
+): PromiseOrValue<ExecutionResult>;
+/**
+ * Also implements the "Executing requests" section of the GraphQL specification.
+ * However, it guarantees to complete synchronously (or throw an error) assuming
+ * that all field resolvers are also synchronous.
+ */
+export declare function executeSync(args: ExecutionArgs): ExecutionResult;
+/**
+ * Essential assertions before executing to provide developer feedback for
+ * improper use of the GraphQL library.
+ *
+ * @internal
+ */
+export declare function assertValidExecutionArguments(
+  schema: GraphQLSchema,
+  document: DocumentNode,
+  rawVariableValues: Maybe<{
+    readonly [variable: string]: unknown;
+  }>,
+): void;
+/**
+ * Constructs a ExecutionContext object from the arguments passed to
+ * execute, which we will pass throughout the other execution methods.
+ *
+ * Throws a GraphQLError if a valid execution context cannot be created.
+ *
+ * @internal
+ */
+export declare function buildExecutionContext(
+  args: ExecutionArgs,
+): ReadonlyArray<GraphQLError> | ExecutionContext;
+/**
+ * @internal
+ */
+export declare function buildResolveInfo(
+  exeContext: ExecutionContext,
+  fieldDef: GraphQLField<unknown, unknown>,
+  fieldNodes: ReadonlyArray<FieldNode>,
+  parentType: GraphQLObjectType,
+  path: Path,
+): GraphQLResolveInfo;
+/**
+ * If a resolveType function is not given, then a default resolve behavior is
+ * used which attempts two strategies:
+ *
+ * First, See if the provided value has a `__typename` field defined, if so, use
+ * that value as name of the resolved type.
+ *
+ * Otherwise, test each possible type for the abstract type by calling
+ * isTypeOf for the object being coerced, returning the first type that matches.
+ */
+export declare const defaultTypeResolver: GraphQLTypeResolver<unknown, unknown>;
+/**
+ * If a resolve function is not given, then a default resolve behavior is used
+ * which takes the property of the source object of the same name as the field
+ * and returns it as the result, or if it's a function, returns the result
+ * of calling that function while passing along args and context value.
+ */
+export declare const defaultFieldResolver: GraphQLFieldResolver<
+  unknown,
+  unknown
+>;
+/**
+ * This method looks up the field on the given type definition.
+ * It has special casing for the three introspection fields,
+ * __schema, __type and __typename. __typename is special because
+ * it can always be queried as a field, even in situations where no
+ * other fields are allowed, like on a Union. __schema and __type
+ * could get automatically added to the query type, but that would
+ * require mutating type definitions, which would cause issues.
+ *
+ * @internal
+ */
+export declare function getFieldDef(
+  schema: GraphQLSchema,
+  parentType: GraphQLObjectType,
+  fieldNode: FieldNode,
+): Maybe<GraphQLField<unknown, unknown>>;