53 lines
1.4 KiB
JavaScript
53 lines
1.4 KiB
JavaScript
'use strict';
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Object.defineProperty(exports, '__esModule', {
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value: true,
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});
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exports.NoUndefinedVariablesRule = NoUndefinedVariablesRule;
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var _GraphQLError = require('../../error/GraphQLError.js');
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/**
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* No undefined variables
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*
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* A GraphQL operation is only valid if all variables encountered, both directly
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* and via fragment spreads, are defined by that operation.
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*
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* See https://spec.graphql.org/draft/#sec-All-Variable-Uses-Defined
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*/
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function NoUndefinedVariablesRule(context) {
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let variableNameDefined = Object.create(null);
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return {
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OperationDefinition: {
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enter() {
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variableNameDefined = Object.create(null);
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},
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leave(operation) {
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const usages = context.getRecursiveVariableUsages(operation);
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for (const { node } of usages) {
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const varName = node.name.value;
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if (variableNameDefined[varName] !== true) {
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context.reportError(
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new _GraphQLError.GraphQLError(
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operation.name
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? `Variable "$${varName}" is not defined by operation "${operation.name.value}".`
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: `Variable "$${varName}" is not defined.`,
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{
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nodes: [node, operation],
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},
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),
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);
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}
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}
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},
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},
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VariableDefinition(node) {
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variableNameDefined[node.variable.name.value] = true;
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},
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};
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}
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