mirror of
https://github.com/zebrajr/react.git
synced 2026-01-15 12:15:22 +00:00
d5f1b067c8
* Flight side of server context * 1 more test * rm unused function * flow+prettier * flow again =) * duplicate ReactServerContext across packages * store default value when lazily initializing server context * . * better comment * derp... missing import * rm optional chaining * missed feature flag * React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED ?? * add warning if non ServerContext passed into useServerContext * pass context in as array of arrays * make importServerContext nott pollute the global context state * merge main * remove useServerContext * dont rely on object getters in ReactServerContext and disallow JSX * add symbols to devtools + rename globalServerContextRegistry to just ContextRegistry * gate test case as experimental * feedback * remove unions * Lint * fix oopsies (tests/lint/mismatching arguments/signatures * lint again * replace-fork * remove extraneous change * rebase * 1 more test * rm unused function * flow+prettier * flow again =) * duplicate ReactServerContext across packages * store default value when lazily initializing server context * . * better comment * derp... missing import * rm optional chaining * missed feature flag * React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED ?? * add warning if non ServerContext passed into useServerContext * pass context in as array of arrays * make importServerContext nott pollute the global context state * merge main * remove useServerContext * dont rely on object getters in ReactServerContext and disallow JSX * add symbols to devtools + rename globalServerContextRegistry to just ContextRegistry * gate test case as experimental * feedback * remove unions * Lint * fix oopsies (tests/lint/mismatching arguments/signatures * lint again * replace-fork * remove extraneous change * rebase * reinline * rebase * add back changes lost due to rebase being hard * emit chunk for provider * remove case for React provider type * update type for SomeChunk * enable flag with experimental * add missing types * fix flow type * missing type * t: any * revert extraneous type change * better type * better type * feedback * change import to type import * test? * test? * remove react-dom * remove react-native-renderer from react-server-native-relay/package.json * gate change in FiberNewContext, getComponentNameFromType, use switch statement in FlightServer * getComponentNameFromTpe: server context type gated and use displayName if available * fallthrough * lint.... * POP * lint
react-is
This package allows you to test arbitrary values and see if they're a particular React element type.
Installation
# Yarn
yarn add react-is
# NPM
npm install react-is
Usage
Determining if a Component is Valid
import React from "react";
import * as ReactIs from "react-is";
class ClassComponent extends React.Component {
render() {
return React.createElement("div");
}
}
const FunctionComponent = () => React.createElement("div");
const ForwardRefComponent = React.forwardRef((props, ref) =>
React.createElement(Component, { forwardedRef: ref, ...props })
);
const Context = React.createContext(false);
ReactIs.isValidElementType("div"); // true
ReactIs.isValidElementType(ClassComponent); // true
ReactIs.isValidElementType(FunctionComponent); // true
ReactIs.isValidElementType(ForwardRefComponent); // true
ReactIs.isValidElementType(Context.Provider); // true
ReactIs.isValidElementType(Context.Consumer); // true
ReactIs.isValidElementType(React.createFactory("div")); // true
Determining an Element's Type
Context
import React from "react";
import * as ReactIs from 'react-is';
const ThemeContext = React.createContext("blue");
ReactIs.isContextConsumer(<ThemeContext.Consumer />); // true
ReactIs.isContextProvider(<ThemeContext.Provider />); // true
ReactIs.typeOf(<ThemeContext.Provider />) === ReactIs.ContextProvider; // true
ReactIs.typeOf(<ThemeContext.Consumer />) === ReactIs.ContextConsumer; // true
Element
import React from "react";
import * as ReactIs from 'react-is';
ReactIs.isElement(<div />); // true
ReactIs.typeOf(<div />) === ReactIs.Element; // true
Fragment
import React from "react";
import * as ReactIs from 'react-is';
ReactIs.isFragment(<></>); // true
ReactIs.typeOf(<></>) === ReactIs.Fragment; // true
Portal
import React from "react";
import ReactDOM from "react-dom";
import * as ReactIs from 'react-is';
const div = document.createElement("div");
const portal = ReactDOM.createPortal(<div />, div);
ReactIs.isPortal(portal); // true
ReactIs.typeOf(portal) === ReactIs.Portal; // true
StrictMode
import React from "react";
import * as ReactIs from 'react-is';
ReactIs.isStrictMode(<React.StrictMode />); // true
ReactIs.typeOf(<React.StrictMode />) === ReactIs.StrictMode; // true