import vfileMessage = require('vfile-message'); const message = vfileMessage('Error!'); vfileMessage(new Error()); vfileMessage('Error!', { type: 'random node' }); vfileMessage('Error!', { start: { line: 1, column: 1 }, end: { line: 1, column: 1 } }); vfileMessage('Error!', { line: 1, column: 1 }); vfileMessage('Error!', undefined, 'test'); message.file = ''; message.name = ''; message.reason = ''; message.message = ''; message.stack = ''; message.fatal = null; message.fatal = true; message.column = 1; message.line = 1;