You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54 lines
1.3 KiB
54 lines
1.3 KiB
'use strict'; |
|
|
|
Object.defineProperty(exports, '__esModule', { |
|
value: true, |
|
}); |
|
exports.UniqueInputFieldNamesRule = UniqueInputFieldNamesRule; |
|
|
|
var _invariant = require('../../jsutils/invariant.js'); |
|
|
|
var _GraphQLError = require('../../error/GraphQLError.js'); |
|
|
|
/** |
|
* Unique input field names |
|
* |
|
* A GraphQL input object value is only valid if all supplied fields are |
|
* uniquely named. |
|
* |
|
* See https://spec.graphql.org/draft/#sec-Input-Object-Field-Uniqueness |
|
*/ |
|
function UniqueInputFieldNamesRule(context) { |
|
const knownNameStack = []; |
|
let knownNames = Object.create(null); |
|
return { |
|
ObjectValue: { |
|
enter() { |
|
knownNameStack.push(knownNames); |
|
knownNames = Object.create(null); |
|
}, |
|
|
|
leave() { |
|
const prevKnownNames = knownNameStack.pop(); |
|
prevKnownNames || (0, _invariant.invariant)(false); |
|
knownNames = prevKnownNames; |
|
}, |
|
}, |
|
|
|
ObjectField(node) { |
|
const fieldName = node.name.value; |
|
|
|
if (knownNames[fieldName]) { |
|
context.reportError( |
|
new _GraphQLError.GraphQLError( |
|
`There can be only one input field named "${fieldName}".`, |
|
{ |
|
nodes: [knownNames[fieldName], node.name], |
|
}, |
|
), |
|
); |
|
} else { |
|
knownNames[fieldName] = node.name; |
|
} |
|
}, |
|
}; |
|
}
|
|
|