code-server/build/lib/eslint/vscode-dts-create-func.ts

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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import * as eslint from 'eslint';
import { TSESTree, AST_NODE_TYPES } from '@typescript-eslint/experimental-utils';
export = new class ApiLiteralOrTypes implements eslint.Rule.RuleModule {
readonly meta: eslint.Rule.RuleMetaData = {
docs: { url: 'https://github.com/microsoft/vscode/wiki/Extension-API-guidelines#creating-objects' },
messages: { sync: '`createXYZ`-functions are constructor-replacements and therefore must return sync', }
};
create(context: eslint.Rule.RuleContext): eslint.Rule.RuleListener {
return {
['TSDeclareFunction Identifier[name=/create.*/]']: (node: any) => {
const decl = <TSESTree.FunctionDeclaration>(<TSESTree.Identifier>node).parent;
if (decl.returnType?.typeAnnotation.type !== AST_NODE_TYPES.TSTypeReference) {
return;
}
if (decl.returnType.typeAnnotation.typeName.type !== AST_NODE_TYPES.Identifier) {
return;
}
const ident = decl.returnType.typeAnnotation.typeName.name;
if (ident === 'Promise' || ident === 'Thenable') {
context.report({
node,
messageId: 'sync'
});
}
}
};
}
};