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node_modules/graphql/graphql.mjs

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+import { devAssert } from './jsutils/devAssert.mjs';
+import { isPromise } from './jsutils/isPromise.mjs';
+import { parse } from './language/parser.mjs';
+import { validateSchema } from './type/validate.mjs';
+import { validate } from './validation/validate.mjs';
+import { execute } from './execution/execute.mjs';
+/**
+ * This is the primary entry point function for fulfilling GraphQL operations
+ * by parsing, validating, and executing a GraphQL document along side a
+ * GraphQL schema.
+ *
+ * More sophisticated GraphQL servers, such as those which persist queries,
+ * may wish to separate the validation and execution phases to a static time
+ * tooling step, and a server runtime step.
+ *
+ * Accepts either an object with named arguments, or individual arguments:
+ *
+ * schema:
+ *    The GraphQL type system to use when validating and executing a query.
+ * source:
+ *    A GraphQL language formatted string representing the requested operation.
+ * rootValue:
+ *    The value provided as the first argument to resolver functions on the top
+ *    level type (e.g. the query object type).
+ * contextValue:
+ *    The context value is provided as an argument to resolver functions after
+ *    field arguments. It is used to pass shared information useful at any point
+ *    during executing this query, for example the currently logged in user and
+ *    connections to databases or other services.
+ * variableValues:
+ *    A mapping of variable name to runtime value to use for all variables
+ *    defined in the requestString.
+ * operationName:
+ *    The name of the operation to use if requestString contains multiple
+ *    possible operations. Can be omitted if requestString contains only
+ *    one operation.
+ * fieldResolver:
+ *    A resolver function to use when one is not provided by the schema.
+ *    If not provided, the default field resolver is used (which looks for a
+ *    value or method on the source value with the field's name).
+ * typeResolver:
+ *    A type resolver function to use when none is provided by the schema.
+ *    If not provided, the default type resolver is used (which looks for a
+ *    `__typename` field or alternatively calls the `isTypeOf` method).
+ */
+
+export function graphql(args) {
+  // Always return a Promise for a consistent API.
+  return new Promise((resolve) => resolve(graphqlImpl(args)));
+}
+/**
+ * The graphqlSync function also fulfills GraphQL operations by parsing,
+ * validating, and executing a GraphQL document along side a GraphQL schema.
+ * However, it guarantees to complete synchronously (or throw an error) assuming
+ * that all field resolvers are also synchronous.
+ */
+
+export function graphqlSync(args) {
+  const result = graphqlImpl(args); // Assert that the execution was synchronous.
+
+  if (isPromise(result)) {
+    throw new Error('GraphQL execution failed to complete synchronously.');
+  }
+
+  return result;
+}
+
+function graphqlImpl(args) {
+  // Temporary for v15 to v16 migration. Remove in v17
+  arguments.length < 2 ||
+    devAssert(
+      false,
+      'graphql@16 dropped long-deprecated support for positional arguments, please pass an object instead.',
+    );
+  const {
+    schema,
+    source,
+    rootValue,
+    contextValue,
+    variableValues,
+    operationName,
+    fieldResolver,
+    typeResolver,
+  } = args; // Validate Schema
+
+  const schemaValidationErrors = validateSchema(schema);
+
+  if (schemaValidationErrors.length > 0) {
+    return {
+      errors: schemaValidationErrors,
+    };
+  } // Parse
+
+  let document;
+
+  try {
+    document = parse(source);
+  } catch (syntaxError) {
+    return {
+      errors: [syntaxError],
+    };
+  } // Validate
+
+  const validationErrors = validate(schema, document);
+
+  if (validationErrors.length > 0) {
+    return {
+      errors: validationErrors,
+    };
+  } // Execute
+
+  return execute({
+    schema,
+    document,
+    rootValue,
+    contextValue,
+    variableValues,
+    operationName,
+    fieldResolver,
+    typeResolver,
+  });
+}