56 lines
1.8 KiB
JavaScript
56 lines
1.8 KiB
JavaScript
/**
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* Copyright 2020 Google Inc. All Rights Reserved.
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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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import { promisify } from 'util';
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import path from 'path';
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import { posix } from 'path';
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import glob from 'glob';
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const globP = promisify(glob);
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const moduleId = 'initial-css:';
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const initialCssModule = '\0initialCss';
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export default function initialCssPlugin() {
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return {
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name: 'initial-css-plugin',
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resolveId(id) {
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if (id === moduleId) return initialCssModule;
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},
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async load(id) {
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if (id !== initialCssModule) return;
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const matches = await globP('shared/prerendered-app/**/*.css', {
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nodir: true,
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cwd: path.join(process.cwd(), 'src'),
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});
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// Sort the matches so the parentmost items appear first.
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// This is a bit of a hack, but it means the util stuff appears in the cascade first.
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const sortedMatches = matches
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.map((match) => path.normalize(match).split(path.sep))
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.sort((a, b) => a.length - b.length)
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.map((match) => posix.join(...match));
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const imports = sortedMatches
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.map((id, i) => `import css${i} from 'css:${id}';\n`)
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.join('');
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return (
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imports +
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`export default ${sortedMatches.map((_, i) => `css${i}`).join(' + ')};`
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);
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},
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};
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}
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