chrome-devtools-frontend
Version:
Chrome DevTools UI
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text/typescript
/**
* @license
* Copyright (c) 2017 The Polymer Project Authors. All rights reserved.
* This code may only be used under the BSD style license found at
* http://polymer.github.io/LICENSE.txt
* The complete set of authors may be found at
* http://polymer.github.io/AUTHORS.txt
* The complete set of contributors may be found at
* http://polymer.github.io/CONTRIBUTORS.txt
* Code distributed by Google as part of the polymer project is also
* subject to an additional IP rights grant found at
* http://polymer.github.io/PATENTS.txt
*/
interface MaybePolyfilledCe extends CustomElementRegistry {
readonly polyfillWrapFlushCallback?: object;
}
/**
* True if the custom elements polyfill is in use.
*/
export const isCEPolyfill = typeof window !== 'undefined' &&
window.customElements != null &&
(window.customElements as MaybePolyfilledCe).polyfillWrapFlushCallback !==
undefined;
/**
* Reparents nodes, starting from `start` (inclusive) to `end` (exclusive),
* into another container (could be the same container), before `before`. If
* `before` is null, it appends the nodes to the container.
*/
export const reparentNodes =
(container: Node,
start: Node|null,
end: Node|null = null,
before: Node|null = null): void => {
while (start !== end) {
const n = start!.nextSibling;
container.insertBefore(start!, before);
start = n;
}
};
/**
* Removes nodes, starting from `start` (inclusive) to `end` (exclusive), from
* `container`.
*/
export const removeNodes =
(container: Node, start: Node|null, end: Node|null = null): void => {
while (start !== end) {
const n = start!.nextSibling;
container.removeChild(start!);
start = n;
}
};