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// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.import { ANY, INVALID } from "./constants.ts";import type { SemVer } from "./types.ts";import { isValidNumber, isValidString } from "./_shared.ts";
/** * Checks to see if value is a valid SemVer object. It does a check * into each field including prerelease and build. * * Some invalid SemVer sentinels can still return true such as ANY and INVALID. * An object which has the same value as a sentinel but isn't reference equal * will still fail. * * Objects which are valid SemVer objects but have _extra_ fields are still * considered SemVer objects and this will return true. * * A type assertion is added to the value. * @param value The value to check to see if its a valid SemVer object * @returns True if value is a valid SemVer otherwise false */export function isSemVer(value: unknown): value is SemVer {  if (value === null || value === undefined) return false;  if (Array.isArray(value)) return false;  if (typeof value !== "object") return false;  if (value === INVALID) return true;  if (value === ANY) return true;
  const { major, minor, patch, build, prerelease } = value as Record<    string,    unknown  >;  const result = typeof major === "number" && isValidNumber(major) &&    typeof minor === "number" && isValidNumber(minor) &&    typeof patch === "number" && isValidNumber(patch) &&    Array.isArray(prerelease) &&    Array.isArray(build) &&    prerelease.every((v) => typeof v === "string" || typeof v === "number") &&    prerelease.filter((v) => typeof v === "string").every((v) =>      isValidString(v)    ) &&    prerelease.filter((v) => typeof v === "number").every((v) =>      isValidNumber(v)    ) &&    build.every((v) => typeof v === "string" && isValidString(v));  return result;}