forked from facebook/react
/
ReactFiberDevToolsHook.js
74 lines (65 loc) · 1.88 KB
/
ReactFiberDevToolsHook.js
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/**
* Copyright 2013-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*
* @providesModule ReactFiberDevToolsHook
* @flow
*/
'use strict';
import type { Fiber } from 'ReactFiber';
import type { FiberRoot } from 'ReactFiberRoot';
declare var __REACT_DEVTOOLS_GLOBAL_HOOK__ : Object | void;
if (__DEV__) {
var warning = require('warning');
}
let rendererID = null;
let injectInternals = null;
let onCommitRoot = null;
let onCommitUnmount = null;
if (
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined' &&
typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.supportsFiber
) {
var {
inject,
onCommitFiberRoot,
onCommitFiberUnmount,
} = __REACT_DEVTOOLS_GLOBAL_HOOK__;
injectInternals = function(internals : Object) {
warning(rendererID == null, 'Cannot inject into DevTools twice.');
rendererID = inject(internals);
};
onCommitRoot = function(root : FiberRoot) {
if (rendererID == null) {
return;
}
try {
onCommitFiberRoot(rendererID, root);
} catch (err) {
// Catch all errors because it is unsafe to throw in the commit phase.
if (__DEV__) {
warning(false, 'React DevTools encountered an error: %s', err);
}
}
};
onCommitUnmount = function(fiber : Fiber) {
if (rendererID == null) {
return;
}
try {
onCommitFiberUnmount(rendererID, fiber);
} catch (err) {
// Catch all errors because it is unsafe to throw in the commit phase.
if (__DEV__) {
warning(false, 'React DevTools encountered an error: %s', err);
}
}
};
}
exports.injectInternals = injectInternals;
exports.onCommitRoot = onCommitRoot;
exports.onCommitUnmount = onCommitUnmount;