47 lines
1.8 KiB
TypeScript
47 lines
1.8 KiB
TypeScript
/*
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Copyright 2021 The Matrix.org Foundation C.I.C.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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/**
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* This code is removed on production builds.
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*
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* Webpack's `string-replace-loader` searches for the `use theming` string
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* in this specific file, and replaces it with CSS requires statements that
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* are specific to the themes we have enabled.
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*
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* Without this workaround, webpack would import the CSS of all themes, which
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* would defeat the purpose of hot-reloading since all themes would be compiled,
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* which would result in compilation times on the order of 30s, even on a
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* powerful machine.
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*
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* For more details, see webpack.config.js:184 (string-replace-loader)
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*/
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if (process.env.NODE_ENV === "development") {
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("use theming");
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/**
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* Clean up old hot-module script injections as they hog up memory
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* and anything other than the newest one is really not needed at all.
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* We don't need to do it more frequently than every half a minute or so,
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* but it's done to delay full page reload due to app slowness.
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*/
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setInterval(() => {
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const elements = Array.from(document.querySelectorAll("script[src*=hot-update]"));
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if (elements.length > 1) {
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const oldInjects = elements.slice(0, elements.length - 1);
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oldInjects.forEach((e) => e.remove());
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}
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}, 1000);
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}
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