1 | import { GraphQLError } from "../../error/GraphQLError.mjs";
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9 | export function UniqueInputFieldNamesRule(context) {
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10 | var knownNameStack = [];
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11 | var knownNames = Object.create(null);
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12 | return {
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13 | ObjectValue: {
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14 | enter: function enter() {
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15 | knownNameStack.push(knownNames);
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16 | knownNames = Object.create(null);
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17 | },
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18 | leave: function leave() {
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19 | knownNames = knownNameStack.pop();
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20 | }
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21 | },
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22 | ObjectField: function ObjectField(node) {
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23 | var fieldName = node.name.value;
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24 |
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25 | if (knownNames[fieldName]) {
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26 | context.reportError(new GraphQLError("There can be only one input field named \"".concat(fieldName, "\"."), [knownNames[fieldName], node.name]));
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27 | } else {
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28 | knownNames[fieldName] = node.name;
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29 | }
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30 | }
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31 | };
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32 | }
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