const normalizeRule = require('./normalize-rule');
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const isWebpack1 = require('./is-webpack-1');
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/**
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* webpack 1 compat loader options finder. Returns normalized options.
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* @param {string} loaderPath
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* @param {Object|Rule} rule
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* @return {Object|null}
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*/
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function getLoaderOptions(loaderPath, rule) {
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let multiRuleProp;
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if (isWebpack1) {
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multiRuleProp = 'loaders';
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} else if (rule.oneOf) {
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multiRuleProp = 'oneOf';
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} else {
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multiRuleProp = 'use';
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}
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const multiRule = typeof rule === 'object' && Array.isArray(rule[multiRuleProp]) ? rule[multiRuleProp] : null;
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let options;
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if (multiRule) {
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const rules = [].concat(...multiRule.map(r => (r.use || r)));
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options = rules.map(normalizeRule).find(r => loaderPath.includes(r.loader)).options;
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} else {
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options = normalizeRule(rule).options;
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}
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return options;
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}
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module.exports = getLoaderOptions;
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