How to use the balanced-match.end function in balanced-match
To help you get started, we’ve selected a few balanced-match examples, based on popular ways it is used in public projects.
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db-migrate / node-db-migrate / lib / transitions / update-version.js View on Github 
var searchString = 'exports.down';
var balance;
var metaIndex;
var plus = 1;
if(required._meta)
searchString = 'exports._meta';
metaIndex = data.indexOf(searchString);
sub = data.substring(metaIndex);
balance = balanced('{', '}', sub);
if(sub[balance.end + 1] === ';')
++plus;
sub = sub.substring(0, balanced.end);
if(required._meta) {
required._meta.version = version;
data = data.substring(0, metaIndex) + sub.replace(
sub.substring(balance.start, balance.end + 1),
JSON.stringify(required._meta, null, 2)
) + data.substring(metaIndex + balance.end + plus);
}
else {
data = data.substring(0, metaIndex + balance.end + plus) +
'\n\nexports._meta = ' +
JSON.stringify({ version: version }, null, 2) + ';' +
data.substring(metaIndex + balance.end + plus);balanced-match
Match balanced character pairs, like "{" and "}"
