parse(data, { preserveComments: true } )
parse(data, { commentsKey: ‘internalComments’, preserveComments: true } )
stringify(data, { preserveComments: true })
stringify(data, { commentsKey: ‘internalComments’, preserveComments: true } )

opt in to save comments when parsing and stringify
save comments to internal object key upon parsing,
add the option to save when stringifying data
store comments internally upon parse and stringify to avoid conflicts
when parsing and stringify multiple documents
use platform eol
include tests in default /test/foo.js

Test option for reading (parse) and saving (stringify) comments in
configuration file.

Test option for reading (parse) and saving (stringify) comments in
configuration file using a custom commentsKey.

Option for reading (parse) and saving (stringify) comments in
configuration file.

'{1,}' can be simplified to '+'

Code scanning / CodeQL
Polynomial regular expression used on uncontrolled data
https://codeql.github.com/codeql-query-help/javascript/js-polynomial-redos/

Code scanning / CodeQL
Polynomial regular expression used on uncontrolled data
https://codeql.github.com/codeql-query-help/javascript/js-polynomial-redos/

If line starts with comment character ; or #
match line string and push line into line comment array

Comments will be stored using the ‘comments’ key
Removes security vulnerability

ini.js
foo.js

parse/decode - store comments as a symbol on object
stringify/encode - restore comments using preserveComments flag