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Nick Gerleman
7858a2147f
Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/36345 `exactOptionalPropertyTypes` is a TypeScript 4.4+ option set by users which changes behavior of optional properties, to disable accepting explicit `undefined`. This is not enabled when using `--strict`, and is stricter than Flow, leading to most of the typings having an `| undefined` unique to TypeScript (added with https://github.com/DefinitelyTyped/DefinitelyTyped/commit/694c663a9486dbe7794d5eb894a691ee9ded318a). We have not always followed this (I have myself previously assumed the two are equivalent). We can enforce that the convention is followed with a plugin `eslint-plugin-redundant-undefined`. This forces us to declare that every optional property accepts an explicit undefined (which Flow would allow). Alternatively, if we do not want to support this, we can enable the existing dtslint rule `no-redundant-undefined`. Changelog: [General][Fixed] - Enforce compatibility with `exactOptionalPropertyTypes` Reviewed By: lunaleaps Differential Revision: D43700862 fbshipit-source-id: 996094762b28918177521a9471d868ba87f0f263
12 lines
378 B
TypeScript
12 lines
378 B
TypeScript
/**
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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import type { SchemaType } from './CodegenSchema';
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export declare function getErrors(schema: SchemaType): readonly string[];
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export declare function validate(schema: SchemaType): void;
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