44 lines
968 B
JavaScript
44 lines
968 B
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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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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* @providesModule LazyRenderer
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*/
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'use strict';
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const React = require('React');
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const createReactClass = require('create-react-class');
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const PropTypes = require('prop-types');
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const TimerMixin = require('react-timer-mixin');
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const LazyRenderer = createReactClass({
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displayName: 'LazyRenderer',
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mixin: [TimerMixin],
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propTypes: {
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render: PropTypes.func.isRequired,
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},
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UNSAFE_componentWillMount: function(): void {
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this.setState({
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_lazyRender : true,
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});
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},
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componentDidMount: function(): void {
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requestAnimationFrame(() => {
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this.setState({
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_lazyRender : false,
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});
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});
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},
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render: function(): ?React.Element {
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return this.state._lazyRender ? null : this.props.render();
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},
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});
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module.exports = LazyRenderer;
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