forked from graphql/graphql-js
/
KnownTypeNamesRule.js
79 lines (68 loc) · 2.29 KB
/
KnownTypeNamesRule.js
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
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
import { didYouMean } from '../../jsutils/didYouMean';
import { suggestionList } from '../../jsutils/suggestionList';
import { GraphQLError } from '../../error/GraphQLError';
import type { ASTNode } from '../../language/ast';
import type { ASTVisitor } from '../../language/visitor';
import {
isTypeDefinitionNode,
isTypeSystemDefinitionNode,
isTypeSystemExtensionNode,
} from '../../language/predicates';
import { specifiedScalarTypes } from '../../type/scalars';
import { introspectionTypes } from '../../type/introspection';
import type {
ValidationContext,
SDLValidationContext,
} from '../ValidationContext';
/**
* Known type names
*
* A GraphQL document is only valid if referenced types (specifically
* variable definitions and fragment conditions) are defined by the type schema.
*/
export function KnownTypeNamesRule(
context: ValidationContext | SDLValidationContext,
): ASTVisitor {
const schema = context.getSchema();
const existingTypesMap = schema ? schema.getTypeMap() : Object.create(null);
const definedTypes = Object.create(null);
for (const def of context.getDocument().definitions) {
if (isTypeDefinitionNode(def)) {
definedTypes[def.name.value] = true;
}
}
const typeNames = Object.keys(existingTypesMap).concat(
Object.keys(definedTypes),
);
return {
NamedType(node, _1, parent, _2, ancestors) {
const typeName = node.name.value;
if (!existingTypesMap[typeName] && !definedTypes[typeName]) {
const definitionNode = ancestors[2] ?? parent;
const isSDL = definitionNode != null && isSDLNode(definitionNode);
if (isSDL && standardTypeNames.includes(typeName)) {
return;
}
const suggestedTypes = suggestionList(
typeName,
isSDL ? standardTypeNames.concat(typeNames) : typeNames,
);
context.reportError(
new GraphQLError(
`Unknown type "${typeName}".` + didYouMean(suggestedTypes),
node,
),
);
}
},
};
}
const standardTypeNames = [...specifiedScalarTypes, ...introspectionTypes].map(
(type) => type.name,
);
function isSDLNode(value: ASTNode | $ReadOnlyArray<ASTNode>): boolean {
return (
!Array.isArray(value) &&
(isTypeSystemDefinitionNode(value) || isTypeSystemExtensionNode(value))
);
}