/*
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MIT License http://www.opensource.org/licenses/mit-license.php
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Author Tobias Koppers @sokra
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*/
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"use strict";
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/** @typedef {import("../Source").RawSourceMap} RawSourceMap */
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/**
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* @param {RawSourceMap} sourceMap source map
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* @param {number} index index
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* @returns {string | null} name
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*/
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const getSource = (sourceMap, index) => {
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if (index < 0) return null;
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const { sourceRoot, sources } = sourceMap;
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const source = sources[index];
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if (!sourceRoot) return source;
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if (sourceRoot.endsWith("/")) return sourceRoot + source;
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return `${sourceRoot}/${source}`;
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};
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module.exports = getSource;
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