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import { GraphQLError } from "../../error/GraphQLError.mjs";
/**
* No undefined variables
*
* A GraphQL operation is only valid if all variables encountered, both directly
* and via fragment spreads, are defined by that operation.
*/
export function NoUndefinedVariablesRule(context) {
var variableNameDefined = Object.create(null);
return {
OperationDefinition: {
enter: function enter() {
variableNameDefined = Object.create(null);
},
leave: function leave(operation) {
var usages = context.getRecursiveVariableUsages(operation);
for (var _i2 = 0; _i2 < usages.length; _i2++) {
var _ref2 = usages[_i2];
var node = _ref2.node;
var varName = node.name.value;
if (variableNameDefined[varName] !== true) {
context.reportError(new GraphQLError(operation.name ? "Variable \"$".concat(varName, "\" is not defined by operation \"").concat(operation.name.value, "\".") : "Variable \"$".concat(varName, "\" is not defined."), [node, operation]));
}
}
}
},
VariableDefinition: function VariableDefinition(node) {
variableNameDefined[node.variable.name.value] = true;
}
};
}
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