| 1 | 'use strict';
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| 2 |
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| 3 | const CHUNK_OPTIONS = ['all', 'initial'];
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| 4 |
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| 5 | const createResourceHint = require('./resource-hints.js').createResourceHint;
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| 6 | const common = require('./common.js');
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| 7 | const matches = common.matches;
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| 8 | const getScriptName = common.getScriptName;
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| 9 | const getRawScriptName = common.getRawScriptName;
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| 10 | const hasScriptName = common.hasScriptName;
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| 11 |
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| 12 | const optionsMatch = (option, scriptName) => {
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| 13 | return matches(option.chunks, CHUNK_OPTIONS) && matches(scriptName, option.test);
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| 14 | };
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| 15 |
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| 16 | const addInitialChunkResourceHints = (options, tags) => {
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| 17 | return tags
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| 18 | .filter(hasScriptName)
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| 19 | .reduce((hints, tag) => {
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| 20 | const scriptName = getScriptName(options, tag);
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| 21 | if (optionsMatch(options.preload, scriptName)) {
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| 22 | hints.push(createResourceHint('preload', getRawScriptName(tag)));
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| 23 | } else if (optionsMatch(options.prefetch, scriptName)) {
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| 24 | hints.push(createResourceHint('prefetch', getRawScriptName(tag)));
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| 25 | }
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| 26 | return hints;
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| 27 | },
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| 28 | []
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| 29 | );
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| 30 | };
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| 31 |
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| 32 | module.exports = addInitialChunkResourceHints;
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