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| ; | |
| Object.defineProperty(exports, '__esModule', { | |
| value: true, | |
| }); | |
| exports.NoUnusedVariablesRule = NoUnusedVariablesRule; | |
| var _GraphQLError = require('../../error/GraphQLError.js'); | |
| /** | |
| * No unused variables | |
| * | |
| * A GraphQL operation is only valid if all variables defined by an operation | |
| * are used, either directly or within a spread fragment. | |
| * | |
| * See https://spec.graphql.org/draft/#sec-All-Variables-Used | |
| */ | |
| function NoUnusedVariablesRule(context) { | |
| let variableDefs = []; | |
| return { | |
| OperationDefinition: { | |
| enter() { | |
| variableDefs = []; | |
| }, | |
| leave(operation) { | |
| const variableNameUsed = Object.create(null); | |
| const usages = context.getRecursiveVariableUsages(operation); | |
| for (const { node } of usages) { | |
| variableNameUsed[node.name.value] = true; | |
| } | |
| for (const variableDef of variableDefs) { | |
| const variableName = variableDef.variable.name.value; | |
| if (variableNameUsed[variableName] !== true) { | |
| context.reportError( | |
| new _GraphQLError.GraphQLError( | |
| operation.name | |
| ? `Variable "$${variableName}" is never used in operation "${operation.name.value}".` | |
| : `Variable "$${variableName}" is never used.`, | |
| { | |
| nodes: variableDef, | |
| }, | |
| ), | |
| ); | |
| } | |
| } | |
| }, | |
| }, | |
| VariableDefinition(def) { | |
| variableDefs.push(def); | |
| }, | |
| }; | |
| } | |