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// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.import type { Comparator, SemVer } from "./types.ts";import { ANY, INVALID, MAX } from "./constants.ts";
/** * The maximum version that could match this comparator. * * If an invalid comparator is given such as <0.0.0 then * an out of range semver will be returned. * @returns the version, the MAX version or the next smallest patch version */export function comparatorMax(comparator: Comparator): SemVer {  const semver = comparator.semver ?? comparator;  if (semver === ANY) return MAX;  switch (comparator.operator) {    case "!=":    case "!==":    case ">":    case ">=":      return MAX;    case "":    case "==":    case "===":    case undefined:    case "=":    case "<=":      return {        major: semver.major,        minor: semver.minor,        patch: semver.patch,        prerelease: semver.prerelease,        build: semver.build,      };    case "<": {      const patch = semver.patch - 1;      const minor = patch >= 0 ? semver.minor : semver.minor - 1;      const major = minor >= 0 ? semver.major : semver.major - 1;      // if you try to do <0.0.0 it will Give you -∞.∞.∞      // which means no SemVer can compare successfully to it.      if (major < 0) {        return INVALID;      } else {        return {          major,          minor: minor >= 0 ? minor : Number.POSITIVE_INFINITY,          patch: patch >= 0 ? patch : Number.POSITIVE_INFINITY,          prerelease: [],          build: [],        };      }    }  }}