41 lines
1.2 KiB
JavaScript
41 lines
1.2 KiB
JavaScript
/**
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* Copyright 2020 The AMP HTML Authors. All Rights Reserved.
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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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'use strict';
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const {AMP_CACHE_HOST, appendRuntimeVersion} = require('./AmpConstants.js');
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function calculateHost({
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ampUrlPrefix = AMP_CACHE_HOST,
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ampRuntimeVersion,
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lts = false,
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rtv = false,
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}) {
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if (lts && rtv) {
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throw new Error('lts flag is not compatible with runtime version parameter');
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}
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ampUrlPrefix = ampUrlPrefix.replace(/\/$/, '');
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if (ampRuntimeVersion && rtv) {
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ampUrlPrefix = appendRuntimeVersion(ampUrlPrefix, ampRuntimeVersion);
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} else if (lts) {
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ampUrlPrefix += '/lts';
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}
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return ampUrlPrefix;
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}
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module.exports = {
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calculateHost,
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};
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