parseUserAgent.ts

interface UserAgentInfoPart {
    name: string;
    version?: string;
    detail?: string[];
}

type UserAgentInfo = UserAgentInfoPart[];

const re = /(\w+)(\/([0-9.]+))?( \((.*)\))?/g;

/**
 * Parse a user agent string into logical parts.
 *
 * @param userAgentStr - The user agent string to parse
 * @return The information parsed from the user agent string
 */
export default function parseUserAgent(userAgentStr: string): UserAgentInfo {
    const parsed = [];
    let match = re.exec(userAgentStr);
    while (match) {
        parsed.push({
            name: match[1],
            version: match[3],
            detail: match[5]?.split(";").map(str => str.trim()),
        });
        match = re.exec(userAgentStr);
    }
    return parsed;
}