version-clean/edition-browsers/index.js

Turn a dirty version (such as v1, =1.0.x, >1.0 <2) into a clean version (1.0)

/**
 * Turn a dirty version (such as `v1`, `=1.0.x`, `>1.0 <2`) into a clean version (1.0)
 * @param dirtyVersion The dirty version to clean
 * @returns The clean version string if possible, otherwise an empty string
 */
export default function versionClean(dirtyVersion) {
    let version = String(dirtyVersion);
    // replace everything that isn't relevant with a space, this ensures 1<2 becomes 1 2 rather than 12
    version = version.replace(/[^0-9.]+/g, ' ');
    // replace duplicate dots and trailing dots
    version = version.replace(/\.\.+/g, '.').replace(/\. |\.$/g, ' ');
    // return the first section that is relevant
    const parts = version.split(/ +/);
    for (const part of parts) {
        if (part)
            return part.trim();
    }
    // failed to parse
    return '';
}