Spaces:
Running
Running
File size: 1,517 Bytes
d4b85c0 |
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 |
'use strict';
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);
},
};
}
|