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/*
MIT License http://www.opensource.org/licenses/mit-license.php
Author Tobias Koppers @sokra
*/
"use strict";
/** @typedef {import("./Dependency").DependencyLocation} DependencyLocation */
// TODO webpack 5 remove string type from a and b
/**
* Compare two locations
* @param {string|DependencyLocation} a A location node
* @param {string|DependencyLocation} b A location node
* @returns {-1|0|1} sorting comparator value
*/
module.exports = (a, b) => {
if (typeof a === "string") {
if (typeof b === "string") {
if (a < b) return -1;
if (a > b) return 1;
return 0;
} else if (typeof b === "object") {
return 1;
} else {
return 0;
}
} else if (typeof a === "object") {
if (typeof b === "string") {
return -1;
} else if (typeof b === "object") {
if ("start" in a && "start" in b) {
const ap = a.start;
const bp = b.start;
if (ap.line < bp.line) return -1;
if (ap.line > bp.line) return 1;
if (ap.column < bp.column) return -1;
if (ap.column > bp.column) return 1;
}
if ("name" in a && "name" in b) {
if (a.name < b.name) return -1;
if (a.name > b.name) return 1;
}
if ("index" in a && "index" in b) {
if (a.index < b.index) return -1;
if (a.index > b.index) return 1;
}
return 0;
} else {
return 0;
}
}
};
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