Runtime: DeprecationWarning: Buffer() is deprecated due to security and usability issues...

[sawilde]

ERROR	(node:8) [DEP0005] DeprecationWarning: Buffer() is deprecated due to security and usability issues. Please use the Buffer.alloc(), Buffer.allocUnsafe(), or Buffer.from() methods instead.

setting NODE_OPTIONS=--trace-deprecation reveals issue in mailparser

    at showFlaggedDeprecation (buffer.js:194:11)
    at new Buffer (buffer.js:278:3)
    at decode (webpack-internal:///./node_modules/libqp/lib/libqp.js:68:18)
    at Decoder._transform (webpack-internal:///./node_modules/libqp/lib/libqp.js:297:15)
    at Decoder.Transform._read (internal/streams/transform.js:205:10)
    at Decoder.Transform._write (internal/streams/transform.js:193:12)
    at writeOrBuffer (internal/streams/writable.js:358:12)
    at Decoder.Writable.write (internal/streams/writable.js:303:10)
    at MailParser.processChunk (webpack-internal:///./node_modules/mailparser/lib/mail-parser.js:945:46)
    at MailParser.readData (webpack-internal:///./node_modules/mailparser/lib/mail-parser.js:227:14)

and is also reported here nodemailer/mailparser#286