react
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React is a JavaScript library for building user interfaces.
139 lines (109 loc) • 4.08 kB
JavaScript
/**
* @license React
* react-jsx-runtime.profiling.min.js
*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
;
var React = require('react');
// ATTENTION
// When adding new symbols to this file,
// Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols'
// The Symbol used to tag the ReactElement-like types.
const REACT_ELEMENT_TYPE = Symbol.for('react.element');
const REACT_FRAGMENT_TYPE = Symbol.for('react.fragment');
const ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;
// $FlowFixMe[method-unbinding]
const hasOwnProperty = Object.prototype.hasOwnProperty;
const ReactCurrentOwner = ReactSharedInternals.ReactCurrentOwner;
function hasValidRef(config) {
return config.ref !== undefined;
}
function hasValidKey(config) {
return config.key !== undefined;
}
/**
* Factory method to create a new React element. This no longer adheres to
* the class pattern, so do not use new to call it. Also, instanceof check
* will not work. Instead test $$typeof field against Symbol.for('react.element') to check
* if something is a React Element.
*
* @param {*} type
* @param {*} props
* @param {*} key
* @param {string|object} ref
* @param {*} owner
* @param {*} self A *temporary* helper to detect places where `this` is
* different from the `owner` when React.createElement is called, so that we
* can warn. We want to get rid of owner and replace string `ref`s with arrow
* functions, and as long as `this` and owner are the same, there will be no
* change in behavior.
* @param {*} source An annotation object (added by a transpiler or otherwise)
* indicating filename, line number, and/or other information.
* @internal
*/
function ReactElement(type, key, ref, self, source, owner, props) {
const element = {
// This tag allows us to uniquely identify this as a React Element
$$typeof: REACT_ELEMENT_TYPE,
// Built-in properties that belong on the element
type,
key,
ref,
props,
// Record the component responsible for creating this element.
_owner: owner
};
return element;
}
/**
* https://github.com/reactjs/rfcs/pull/107
* @param {*} type
* @param {object} props
* @param {string} key
*/
function jsx$1(type, config, maybeKey) {
let propName; // Reserved names are extracted
const props = {};
let key = null;
let ref = null; // Currently, key can be spread in as a prop. This causes a potential
// issue if key is also explicitly declared (ie. <div {...props} key="Hi" />
// or <div key="Hi" {...props} /> ). We want to deprecate key spread,
// but as an intermediary step, we will use jsxDEV for everything except
// <div {...props} key="Hi" />, because we aren't currently able to tell if
// key is explicitly declared to be undefined or not.
if (maybeKey !== undefined) {
key = '' + maybeKey;
}
if (hasValidKey(config)) {
key = '' + config.key;
}
if (hasValidRef(config)) {
ref = config.ref;
} // Remaining properties are added to a new props object
for (propName in config) {
if (hasOwnProperty.call(config, propName) && // Skip over reserved prop names
propName !== 'key' && // TODO: `ref` will no longer be reserved in the next major
propName !== 'ref') {
props[propName] = config[propName];
}
} // Resolve default props
if (type && type.defaultProps) {
const defaultProps = type.defaultProps;
for (propName in defaultProps) {
if (props[propName] === undefined) {
props[propName] = defaultProps[propName];
}
}
}
return ReactElement(type, key, ref, undefined, undefined, ReactCurrentOwner.current, props);
}
const jsx = jsx$1; // we may want to special case jsxs internally to take advantage of static children.
// for now we can ship identical prod functions
const jsxs = jsx$1;
exports.Fragment = REACT_FRAGMENT_TYPE;
exports.jsx = jsx;
exports.jsxs = jsxs;