syncpack/dist/guards/is-semver.js

Consistent dependency versions in large JavaScript Monorepos

import { isString } from 'tightrope/guard/is-string.js';
/** @deprecated migrate to make better use of npm-package-arg */
export function isSemver(version) {
    const range = '(~|\\^|>=|>|<=|<)?';
    const ints = '[0-9]+';
    const intsOrX = '([0-9]+|x)';
    const dot = '\\.';
    const major = new RegExp(`^${range}${ints}$`);
    const minor = new RegExp(`^${range}${ints}${dot}${intsOrX}$`);
    const patch = new RegExp(`^${range}${ints}${dot}${intsOrX}${dot}${intsOrX}$`);
    return (isString(version) &&
        (version.search(major) !== -1 ||
            version.search(minor) !== -1 ||
            version.search(patch) !== -1));
}