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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.import type { Comparator } from "./types.ts";import { compare } from "./compare.ts";import { testRange } from "./test_range.ts";import { isWildcardComparator } from "./_shared.ts";
/** * Returns true if the range of possible versions intersects with the other comparators set of possible versions * @param c0 The left side comparator * @param c1 The right side comparator * @returns True if any part of the comparators intersect */export function comparatorIntersects(  c0: Comparator,  c1: Comparator,): boolean {  const op0 = c0.operator;  const op1 = c1.operator;
  if (op0 === "" || op0 === undefined) {    // if c0 is empty comparator, then returns true    if (isWildcardComparator(c0)) {      return true;    }    return testRange(c0, [[c1]]);  } else if (op1 === "" || op1 === undefined) {    if (isWildcardComparator(c1)) {      return true;    }    return testRange(c1, [[c0]]);  }
  const cmp = compare(c0, c1);
  const sameDirectionIncreasing = (op0 === ">=" || op0 === ">") &&    (op1 === ">=" || op1 === ">");  const sameDirectionDecreasing = (op0 === "<=" || op0 === "<") &&    (op1 === "<=" || op1 === "<");  const sameSemVer = cmp === 0;  const differentDirectionsInclusive = (op0 === ">=" || op0 === "<=") &&    (op1 === ">=" || op1 === "<=");  const oppositeDirectionsLessThan = cmp === -1 &&    (op0 === ">=" || op0 === ">") &&    (op1 === "<=" || op1 === "<");  const oppositeDirectionsGreaterThan = cmp === 1 &&    (op0 === "<=" || op0 === "<") &&    (op1 === ">=" || op1 === ">");
  return sameDirectionIncreasing ||    sameDirectionDecreasing ||    (sameSemVer && differentDirectionsInclusive) ||    oppositeDirectionsLessThan ||    oppositeDirectionsGreaterThan;}