@graphql-tools/executor
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Fork of GraphQL.js' execute function
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JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.getVariableValues = void 0;
const graphql_1 = require("graphql");
const utils_1 = require("@graphql-tools/utils");
/**
* Prepares an object map of variableValues of the correct type based on the
* provided variable definitions and arbitrary input. If the input cannot be
* parsed to match the variable definitions, a GraphQLError will be thrown.
*
* Note: The returned value is a plain Object with a prototype, since it is
* exposed to user code. Care should be taken to not pull values from the
* Object prototype.
*/
function getVariableValues(schema, varDefNodes, inputs, options) {
const errors = [];
const maxErrors = options?.maxErrors;
try {
const coerced = coerceVariableValues(schema, varDefNodes, inputs, error => {
if (maxErrors != null && errors.length >= maxErrors) {
throw (0, utils_1.createGraphQLError)('Too many errors processing variables, error limit reached. Execution aborted.');
}
errors.push(error);
});
if (errors.length === 0) {
return { coerced };
}
}
catch (error) {
errors.push(error);
}
// @ts-expect-error - We know that errors is an array of GraphQLError.
return { errors };
}
exports.getVariableValues = getVariableValues;
function coerceVariableValues(schema, varDefNodes, inputs, onError) {
const coercedValues = {};
for (const varDefNode of varDefNodes) {
const varName = varDefNode.variable.name.value;
const varType = (0, graphql_1.typeFromAST)(schema, varDefNode.type);
if (!(0, graphql_1.isInputType)(varType)) {
// Must use input types for variables. This should be caught during
// validation, however is checked again here for safety.
const varTypeStr = (0, graphql_1.print)(varDefNode.type);
onError((0, utils_1.createGraphQLError)(`Variable "$${varName}" expected value of type "${varTypeStr}" which cannot be used as an input type.`, { nodes: varDefNode.type }));
continue;
}
if (!(0, utils_1.hasOwnProperty)(inputs, varName)) {
if (varDefNode.defaultValue) {
coercedValues[varName] = (0, graphql_1.valueFromAST)(varDefNode.defaultValue, varType);
}
else if ((0, graphql_1.isNonNullType)(varType)) {
const varTypeStr = (0, utils_1.inspect)(varType);
onError((0, utils_1.createGraphQLError)(`Variable "$${varName}" of required type "${varTypeStr}" was not provided.`, {
nodes: varDefNode,
}));
}
continue;
}
const value = inputs[varName];
if (value === null && (0, graphql_1.isNonNullType)(varType)) {
const varTypeStr = (0, utils_1.inspect)(varType);
onError((0, utils_1.createGraphQLError)(`Variable "$${varName}" of non-null type "${varTypeStr}" must not be null.`, {
nodes: varDefNode,
}));
continue;
}
coercedValues[varName] = (0, graphql_1.coerceInputValue)(value, varType, (path, invalidValue, error) => {
let prefix = `Variable "$${varName}" got invalid value ` + (0, utils_1.inspect)(invalidValue);
if (path.length > 0) {
prefix += ` at "${varName}${(0, utils_1.printPathArray)(path)}"`;
}
onError((0, utils_1.createGraphQLError)(prefix + '; ' + error.message, {
nodes: varDefNode,
originalError: error,
}));
});
}
return coercedValues;
}