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rOACCT/node_modules/react-lifecycles-compat/react-lifecycles-compat.es.js
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react-lifecycles-compat.es.js
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			/**
			* Copyright (c) 2013-present, Facebook, Inc.
			*
			* This source code is licensed under the MIT license found in the
			* LICENSE file in the root directory of this source tree.
			*/

			function componentWillMount() {
			// Call this.constructor.gDSFP to support sub-classes.
			var state = this.constructor.getDerivedStateFromProps(this.props, this.state);
			if (state !== null && state !== undefined) {
			this.setState(state);
			}
			}

			function componentWillReceiveProps(nextProps) {
			// Call this.constructor.gDSFP to support sub-classes.
			// Use the setState() updater to ensure state isn't stale in certain edge cases.
			function updater(prevState) {
			var state = this.constructor.getDerivedStateFromProps(nextProps, prevState);
			return state !== null && state !== undefined ? state : null;
			}
			// Binding "this" is important for shallow renderer support.
			this.setState(updater.bind(this));
			}

			function componentWillUpdate(nextProps, nextState) {
			try {
			var prevProps = this.props;
			var prevState = this.state;
			this.props = nextProps;
			this.state = nextState;
			this.__reactInternalSnapshotFlag = true;
			this.__reactInternalSnapshot = this.getSnapshotBeforeUpdate(
			prevProps,
			prevState
			);
			} finally {
			this.props = prevProps;
			this.state = prevState;
			}
			}

			// React may warn about cWM/cWRP/cWU methods being deprecated.
			// Add a flag to suppress these warnings for this special case.
			componentWillMount.__suppressDeprecationWarning = true;
			componentWillReceiveProps.__suppressDeprecationWarning = true;
			componentWillUpdate.__suppressDeprecationWarning = true;

			function polyfill(Component) {
			var prototype = Component.prototype;

			if (!prototype \|\| !prototype.isReactComponent) {
			throw new Error('Can only polyfill class components');
			}

			if (
			typeof Component.getDerivedStateFromProps !== 'function' &&
			typeof prototype.getSnapshotBeforeUpdate !== 'function'
			) {
			return Component;
			}

			// If new component APIs are defined, "unsafe" lifecycles won't be called.
			// Error if any of these lifecycles are present,
			// Because they would work differently between older and newer (16.3+) versions of React.
			var foundWillMountName = null;
			var foundWillReceivePropsName = null;
			var foundWillUpdateName = null;
			if (typeof prototype.componentWillMount === 'function') {
			foundWillMountName = 'componentWillMount';
			} else if (typeof prototype.UNSAFE_componentWillMount === 'function') {
			foundWillMountName = 'UNSAFE_componentWillMount';
			}
			if (typeof prototype.componentWillReceiveProps === 'function') {
			foundWillReceivePropsName = 'componentWillReceiveProps';
			} else if (typeof prototype.UNSAFE_componentWillReceiveProps === 'function') {
			foundWillReceivePropsName = 'UNSAFE_componentWillReceiveProps';
			}
			if (typeof prototype.componentWillUpdate === 'function') {
			foundWillUpdateName = 'componentWillUpdate';
			} else if (typeof prototype.UNSAFE_componentWillUpdate === 'function') {
			foundWillUpdateName = 'UNSAFE_componentWillUpdate';
			}
			if (
			foundWillMountName !== null \|\|
			foundWillReceivePropsName !== null \|\|
			foundWillUpdateName !== null
			) {
			var componentName = Component.displayName \|\| Component.name;
			var newApiName =
			typeof Component.getDerivedStateFromProps === 'function'
			? 'getDerivedStateFromProps()'
			: 'getSnapshotBeforeUpdate()';

			throw Error(
			'Unsafe legacy lifecycles will not be called for components using new component APIs.\n\n' +
			componentName +
			' uses ' +
			newApiName +
			' but also contains the following legacy lifecycles:' +
			(foundWillMountName !== null ? '\n ' + foundWillMountName : '') +
			(foundWillReceivePropsName !== null
			? '\n ' + foundWillReceivePropsName
			: '') +
			(foundWillUpdateName !== null ? '\n ' + foundWillUpdateName : '') +
			'\n\nThe above lifecycles should be removed. Learn more about this warning here:\n' +
			'https://fb.me/react-async-component-lifecycle-hooks'
			);
			}

			// React <= 16.2 does not support static getDerivedStateFromProps.
			// As a workaround, use cWM and cWRP to invoke the new static lifecycle.
			// Newer versions of React will ignore these lifecycles if gDSFP exists.
			if (typeof Component.getDerivedStateFromProps === 'function') {
			prototype.componentWillMount = componentWillMount;
			prototype.componentWillReceiveProps = componentWillReceiveProps;
			}

			// React <= 16.2 does not support getSnapshotBeforeUpdate.
			// As a workaround, use cWU to invoke the new lifecycle.
			// Newer versions of React will ignore that lifecycle if gSBU exists.
			if (typeof prototype.getSnapshotBeforeUpdate === 'function') {
			if (typeof prototype.componentDidUpdate !== 'function') {
			throw new Error(
			'Cannot polyfill getSnapshotBeforeUpdate() for components that do not define componentDidUpdate() on the prototype'
			);
			}

			prototype.componentWillUpdate = componentWillUpdate;

			var componentDidUpdate = prototype.componentDidUpdate;

			prototype.componentDidUpdate = function componentDidUpdatePolyfill(
			prevProps,
			prevState,
			maybeSnapshot
			) {
			// 16.3+ will not execute our will-update method;
			// It will pass a snapshot value to did-update though.
			// Older versions will require our polyfilled will-update value.
			// We need to handle both cases, but can't just check for the presence of "maybeSnapshot",
			// Because for <= 15.x versions this might be a "prevContext" object.
			// We also can't just check "__reactInternalSnapshot",
			// Because get-snapshot might return a falsy value.
			// So check for the explicit __reactInternalSnapshotFlag flag to determine behavior.
			var snapshot = this.__reactInternalSnapshotFlag
			? this.__reactInternalSnapshot
			: maybeSnapshot;

			componentDidUpdate.call(this, prevProps, prevState, snapshot);
			};
			}

			return Component;
			}

			export { polyfill };