eslint-plugin-type-graphql
Version:
Linter for TypeGraphQL decorators
47 lines • 2.37 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const experimental_utils_1 = require("@typescript-eslint/experimental-utils");
const createRule_1 = require("../util/createRule");
const typeGraphQLUtil_1 = require("../util/typeGraphQLUtil");
exports.default = (0, createRule_1.createRule)({
name: 'invalid-nullable-output-type',
meta: {
docs: {
description: 'Warns when the nullable type of an output type is invalid',
recommended: 'warn',
requiresTypeChecking: true,
},
messages: {
invalidNullableOutputType: 'Nullable output types should be defined as Type | null',
},
hasSuggestions: true,
schema: [],
type: 'problem',
},
defaultOptions: [],
create(context) {
const parserServices = experimental_utils_1.ESLintUtils.getParserServices(context);
const checker = parserServices.program.getTypeChecker();
return (0, typeGraphQLUtil_1.getTypeGraphQLVisitors)(checker, parserServices, ({ decoratorProps, decoratedProps }) => {
var _a, _b, _c;
// Check whether the decorator and decorated type area known and valid, and whether this is an input
if (!((_a = decoratedProps.type) === null || _a === void 0 ? void 0 : _a.isValid) || !((_b = decoratorProps.type) === null || _b === void 0 ? void 0 : _b.isValid) || decoratorProps.direction !== 'output') {
return;
}
// Check whether isArray is set similar for the decorator and decorated type
if (decoratorProps.type.isArray !== decoratedProps.type.isArray) {
return;
}
if ((decoratorProps.type.isArrayNullable &&
(decoratedProps.type.isArrayUndefinable || !decoratedProps.type.isArrayNullable)) ||
(decoratorProps.type.isNullable && (decoratedProps.type.isUndefinable || !decoratedProps.type.isNullable))) {
// This type is either not nullable or undefinable
context.report({
node: (_c = decoratedProps.typeNode) !== null && _c !== void 0 ? _c : decoratedProps.node,
messageId: 'invalidNullableOutputType',
});
}
});
},
});
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