graphql

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'use strict';
Object.defineProperty(exports, '__esModule', {
value: true,
});
exports.graphql = graphql;
exports.graphqlSync = graphqlSync;
var _devAssert = require('./jsutils/devAssert.js');
var _isPromise = require('./jsutils/isPromise.js');
var _parser = require('./language/parser.js');
var _validate = require('./type/validate.js');
var _validate2 = require('./validation/validate.js');
var _execute = require('./execution/execute.js');
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.
*/
function graphqlSync(args) {
const result = graphqlImpl(args); // Assert that the execution was synchronous.
if ((0, _isPromise.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 ||
(0, _devAssert.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 = (0, _validate.validateSchema)(schema);
if (schemaValidationErrors.length > 0) {
return {
errors: schemaValidationErrors,
};
} // Parse
let document;
try {
document = (0, _parser.parse)(source);
} catch (syntaxError) {
return {
errors: [syntaxError],
};
} // Validate
const validationErrors = (0, _validate2.validate)(schema, document);
if (validationErrors.length > 0) {
return {
errors: validationErrors,
};
} // Execute
return (0, _execute.execute)({
schema,
document,
rootValue,
contextValue,
variableValues,
operationName,
fieldResolver,
typeResolver,
});
}