forked from facebook/react
/
ReactCurrentFiber.js
80 lines (69 loc) · 1.9 KB
/
ReactCurrentFiber.js
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/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow
*/
import type {Fiber} from './ReactInternalTypes';
import ReactSharedInternals from 'shared/ReactSharedInternals';
import {getStackByFiberInDevAndProd} from './ReactFiberComponentStack';
import getComponentNameFromFiber from 'react-reconciler/src/getComponentNameFromFiber';
const ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
export let current: Fiber | null = null;
export let isRendering: boolean = false;
export function getCurrentFiberOwnerNameInDevOrNull(): string | null {
if (__DEV__) {
if (current === null) {
return null;
}
const owner = current._debugOwner;
if (owner !== null && typeof owner !== 'undefined') {
return getComponentNameFromFiber(owner);
}
}
return null;
}
function getCurrentFiberStackInDev(): string {
if (__DEV__) {
if (current === null) {
return '';
}
// Safe because if current fiber exists, we are reconciling,
// and it is guaranteed to be the work-in-progress version.
return getStackByFiberInDevAndProd(current);
}
return '';
}
export function resetCurrentFiber() {
if (__DEV__) {
ReactDebugCurrentFrame.getCurrentStack = null;
current = null;
isRendering = false;
}
}
export function setCurrentFiber(fiber: Fiber | null) {
if (__DEV__) {
ReactDebugCurrentFrame.getCurrentStack =
fiber === null ? null : getCurrentFiberStackInDev;
current = fiber;
isRendering = false;
}
}
export function getCurrentFiber(): Fiber | null {
if (__DEV__) {
return current;
}
return null;
}
export function setIsRendering(rendering: boolean) {
if (__DEV__) {
isRendering = rendering;
}
}
export function getIsRendering() {
if (__DEV__) {
return isRendering;
}
}