39 lines
767 B
JavaScript
39 lines
767 B
JavaScript
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/**
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* Copyright 2004-present Facebook. All Rights Reserved.
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*
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* @providesModule StyleSheetRegistry
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*/
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'use strict';
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var styles = {};
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var uniqueID = 1;
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var emptyStyle = {};
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class StyleSheetRegistry {
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static registerStyle(style) {
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var id = ++uniqueID;
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if (__DEV__) {
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Object.freeze(style);
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}
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styles[id] = style;
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return id;
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}
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static getStyleByID(id) {
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if (!id) {
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// Used in the style={[condition && id]} pattern,
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// we want it to be a no-op when the value is false or null
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return emptyStyle;
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}
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var style = styles[id];
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if (!style) {
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console.warn('Invalid style with id `' + id + '`. Skipping ...');
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return emptyStyle;
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}
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return style;
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}
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}
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module.exports = StyleSheetRegistry;
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