33 lines
1.0 KiB
JavaScript
33 lines
1.0 KiB
JavaScript
'use strict';
|
|
|
|
const CHUNK_OPTIONS = ['all', 'initial'];
|
|
|
|
const createResourceHint = require('./resource-hints.js').createResourceHint;
|
|
const common = require('./common.js');
|
|
const matches = common.matches;
|
|
const getScriptName = common.getScriptName;
|
|
const getRawScriptName = common.getRawScriptName;
|
|
const hasScriptName = common.hasScriptName;
|
|
|
|
const optionsMatch = (option, scriptName) => {
|
|
return matches(option.chunks, CHUNK_OPTIONS) && matches(scriptName, option.test);
|
|
};
|
|
|
|
const addInitialChunkResourceHints = (options, tags) => {
|
|
return tags
|
|
.filter(hasScriptName)
|
|
.reduce((hints, tag) => {
|
|
const scriptName = getScriptName(options, tag);
|
|
if (optionsMatch(options.preload, scriptName)) {
|
|
hints.push(createResourceHint('preload', getRawScriptName(tag)));
|
|
} else if (optionsMatch(options.prefetch, scriptName)) {
|
|
hints.push(createResourceHint('prefetch', getRawScriptName(tag)));
|
|
}
|
|
return hints;
|
|
},
|
|
[]
|
|
);
|
|
};
|
|
|
|
module.exports = addInitialChunkResourceHints;
|