/*
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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("./Dependency").DependencyLocation} DependencyLocation */
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// TODO webpack 5 remove string type from a and b
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/**
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* Compare two locations
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* @param {string|DependencyLocation} a A location node
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* @param {string|DependencyLocation} b A location node
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* @returns {-1|0|1} sorting comparator value
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*/
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module.exports = (a, b) => {
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if (typeof a === "string") {
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if (typeof b === "string") {
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if (a < b) return -1;
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if (a > b) return 1;
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return 0;
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} else if (typeof b === "object") {
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return 1;
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} else {
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return 0;
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}
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} else if (typeof a === "object") {
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if (typeof b === "string") {
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return -1;
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} else if (typeof b === "object") {
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if ("start" in a && "start" in b) {
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const ap = a.start;
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const bp = b.start;
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if (ap.line < bp.line) return -1;
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if (ap.line > bp.line) return 1;
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if (ap.column < bp.column) return -1;
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if (ap.column > bp.column) return 1;
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}
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if ("name" in a && "name" in b) {
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if (a.name < b.name) return -1;
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if (a.name > b.name) return 1;
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}
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if ("index" in a && "index" in b) {
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if (a.index < b.index) return -1;
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if (a.index > b.index) return 1;
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}
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return 0;
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} else {
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return 0;
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}
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}
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};
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