What does the N and Y letters mean at the end of npm audit --parseable in npm 6?

[Uko]

Hi, as many other people I'm using npm 6. When I run npm audit --parseable I get a nice tabular output which has Y, N or nothing in the end of each line. Can someone explain to me what that means, because I couldn't figure that out from the source code.

Hare is an example of the output:

update  bl  high    npm update bl --depth 4 Remote Memory Exposure  https://npmjs.com/advisories/1555   exceljs>archiver>tar-stream>bl  N
review  cryptiles   high    >=4.1.2 Insufficient Entropy    https://npmjs.com/advisories/1464   uko-solr-client>request>hawk>cryptiles
install exceljs moderate    npm install exceljs@4.1.1   Cross-Site Scripting    https://npmjs.com/advisories/733    exceljs Y
review  hoek    moderate    > 4.2.0 < 5.0.0 || >= 5.0.3 Prototype Pollution https://npmjs.com/advisories/566    uko-solr-client>request>hawk>boom>hoek

[wraithgar]

It indicates that a breaking change is required to resolve the advisory

npm-audit-report/reporters/parseable.js

Line 27 in 1390024

l.breaking = recommendation.isBreaking ? 'Y' : 'N'