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std/semver/is_semver.ts

Deno standard library
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// Copyright 2018-2024 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>; return ( isValidNumber(major) && isValidNumber(minor) && isValidNumber(patch) && Array.isArray(prerelease) && prerelease.every((v) => isValidString(v) || isValidNumber(v)) && Array.isArray(build) && build.every(isValidString) );}