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69 lines
3.2 KiB
TypeScript
69 lines
3.2 KiB
TypeScript
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import * as React from 'react';
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/** @private is the value an empty array? */
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export declare const isEmptyArray: (value?: any) => boolean;
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/** @private is the given object a Function? */
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export declare const isFunction: (obj: any) => obj is Function;
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/** @private is the given object an Object? */
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export declare const isObject: (obj: any) => obj is Object;
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/** @private is the given object an integer? */
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export declare const isInteger: (obj: any) => boolean;
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/** @private is the given object a string? */
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export declare const isString: (obj: any) => obj is string;
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/** @private is the given object a NaN? */
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export declare const isNaN: (obj: any) => boolean;
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/** @private Does a React component have exactly 0 children? */
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export declare const isEmptyChildren: (children: any) => boolean;
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/** @private is the given object/value a promise? */
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export declare const isPromise: (value: any) => value is PromiseLike<any>;
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/** @private is the given object/value a type of synthetic event? */
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export declare const isInputEvent: (value: any) => value is React.SyntheticEvent<any, Event>;
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/**
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* Same as document.activeElement but wraps in a try-catch block. In IE it is
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* not safe to call document.activeElement if there is nothing focused.
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*
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* The activeElement will be null only if the document or document body is not
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* yet defined.
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*
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* @param {?Document} doc Defaults to current document.
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* @return {Element | null}
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* @see https://github.com/facebook/fbjs/blob/master/packages/fbjs/src/core/dom/getActiveElement.js
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*/
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export declare function getActiveElement(doc?: Document): Element | null;
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/**
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* Deeply get a value from an object via its path.
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*/
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export declare function getIn(obj: any, key: string | string[], def?: any, p?: number): any;
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/**
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* Deeply set a value from in object via it's path. If the value at `path`
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* has changed, return a shallow copy of obj with `value` set at `path`.
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* If `value` has not changed, return the original `obj`.
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*
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* Existing objects / arrays along `path` are also shallow copied. Sibling
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* objects along path retain the same internal js reference. Since new
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* objects / arrays are only created along `path`, we can test if anything
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* changed in a nested structure by comparing the object's reference in
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* the old and new object, similar to how russian doll cache invalidation
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* works.
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*
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* In earlier versions of this function, which used cloneDeep, there were
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* issues whereby settings a nested value would mutate the parent
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* instead of creating a new object. `clone` avoids that bug making a
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* shallow copy of the objects along the update path
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* so no object is mutated in place.
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*
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* Before changing this function, please read through the following
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* discussions.
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*
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* @see https://github.com/developit/linkstate
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* @see https://github.com/jaredpalmer/formik/pull/123
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*/
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export declare function setIn(obj: any, path: string, value: any): any;
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/**
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* Recursively a set the same value for all keys and arrays nested object, cloning
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* @param object
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* @param value
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* @param visited
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* @param response
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*/
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export declare function setNestedObjectValues<T>(object: any, value: any, visited?: any, response?: any): T;
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