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https://github.com/facebook/react-native.git
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Michał Osadnik
fb7b2d3533
Summary: returning type of Bubbling and Direct Event should be always void of Promise (if async). Other situations shouldn't be permitted. Reformated all cases when it the function wasn't void. Reviewed By: rickhanlonii Differential Revision: D16165962 fbshipit-source-id: 7c1377c3ed4bd54a431a13e5bcda4f7ec0adf4dc
40 lines
1.2 KiB
JavaScript
40 lines
1.2 KiB
JavaScript
/**
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* Copyright (c) Facebook, Inc. and its 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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* @format
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* @flow
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*/
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'use strict';
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import type {SyntheticEvent} from './CoreEventTypes';
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// Event types
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// We're not using the PaperName, it is only used to codegen view config settings
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export type BubblingEventHandler<
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T,
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PaperName: string | empty = empty, // eslint-disable-line no-unused-vars
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> = (event: SyntheticEvent<T>) => void | Promise<void>;
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export type DirectEventHandler<
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T,
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PaperName: string | empty = empty, // eslint-disable-line no-unused-vars
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> = (event: SyntheticEvent<T>) => void | Promise<void>;
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// Prop types
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export type Float = number;
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export type Int32 = number;
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type DefaultTypes = number | boolean | string | $ReadOnlyArray<string>;
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// Default handling, ignore the unused value
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// we're only using it for type checking
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//
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// TODO: (rickhanlonii) T44881457 If a default is provided, it should always be optional
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// but that is currently not supported in the codegen since we require a default
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//
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// eslint-disable-next-line no-unused-vars
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export type WithDefault<Type: DefaultTypes, Value: ?Type | string> = ?Type;
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