42 lines
1.1 KiB
JavaScript
42 lines
1.1 KiB
JavaScript
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/**
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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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* @flow strict-local
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* @format
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*/
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'use strict';
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import type {DangerouslyImpreciseStyleProp} from './StyleSheet';
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import type {____FlattenStyleProp_Internal} from './StyleSheetTypes';
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function flattenStyle<+TStyleProp: DangerouslyImpreciseStyleProp>(
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style: ?TStyleProp,
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// $FlowFixMe[underconstrained-implicit-instantiation]
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): ?____FlattenStyleProp_Internal<TStyleProp> {
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if (style === null || typeof style !== 'object') {
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return undefined;
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}
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if (!Array.isArray(style)) {
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return style;
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}
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const result: {[string]: $FlowFixMe} = {};
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for (let i = 0, styleLength = style.length; i < styleLength; ++i) {
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// $FlowFixMe[underconstrained-implicit-instantiation]
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const computedStyle = flattenStyle(style[i]);
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if (computedStyle) {
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for (const key in computedStyle) {
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result[key] = computedStyle[key];
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}
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}
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}
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return result;
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}
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module.exports = flattenStyle;
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