43 lines
1.4 KiB
TypeScript
43 lines
1.4 KiB
TypeScript
/**
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* @license
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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// This file adds some simple checks to match internal google rules.
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// Internally in google it has different implementation
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import {BrandType} from '../types/common';
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export type SafeHtml = BrandType<string, '_safeHtml'>;
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export type SafeStyleSheet = BrandType<string, '_safeHtml'>;
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export function setInnerHtml(el: HTMLElement, innerHTML: SafeHtml) {
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el.innerHTML = innerHTML;
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}
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export function createStyle(styleSheet: SafeStyleSheet): SafeHtml {
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return `<style>${styleSheet}</style>` as SafeHtml;
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}
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export function safeStyleSheet(
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templateObj: TemplateStringsArray
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): SafeStyleSheet {
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const styleSheet = templateObj[0];
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if (/[<>]/.test(styleSheet)) {
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throw new Error('Forbidden characters in styleSheet string: ' + styleSheet);
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}
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return styleSheet as SafeStyleSheet;
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}
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