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.
30 lines
1.0 KiB
30 lines
1.0 KiB
import { GraphQLError } from "../../error/GraphQLError.mjs";
|
|
|
|
/**
|
|
* Unique directive names
|
|
*
|
|
* A GraphQL document is only valid if all defined directives have unique names.
|
|
*/
|
|
export function UniqueDirectiveNamesRule(context) {
|
|
var knownDirectiveNames = Object.create(null);
|
|
var schema = context.getSchema();
|
|
return {
|
|
DirectiveDefinition: function DirectiveDefinition(node) {
|
|
var directiveName = node.name.value;
|
|
|
|
if (schema !== null && schema !== void 0 && schema.getDirective(directiveName)) {
|
|
context.reportError(new GraphQLError("Directive \"@".concat(directiveName, "\" already exists in the schema. It cannot be redefined."), node.name));
|
|
return;
|
|
}
|
|
|
|
if (knownDirectiveNames[directiveName]) {
|
|
context.reportError(new GraphQLError("There can be only one directive named \"@".concat(directiveName, "\"."), [knownDirectiveNames[directiveName], node.name]));
|
|
} else {
|
|
knownDirectiveNames[directiveName] = node.name;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
};
|
|
}
|