lib/thaw.js
function parseJSON(buf, cb) {
    try {
        cb(null, JSON.parse(buf));
    } catch (err) {
        return cb(err);
    }
}
function parseJSON(buf, cb) {
    try {
        cb(null, JSON.parse(buf));
    } catch (err) {
        return cb(err);
    }
}
function parseJSON ( buf , cb ) { try { cb ( null , JSON . parse ( buf ) ) ; } catch ( err ) { return cb ( err ) ; } }
convert thrown exceptions into callback err
convert thrown exceptions into callback err