Get id, publisher name, name and version of a vsix file.
npm install --save vsix-info
var VsixInfo = require('vsix-info').default
VsixInfo.getInfo('./fake-vscode-extension-0.0.1.vsix').then(info => {
console.log(info)
})
Console
{
displayName: 'fake-vscode-extension',
publisher: 'JulienCroain',
version: '0.0.1',
id: 'fake-vscode-extension',
readme: 'content of README.md file',
path: './fake-vscode-extension-0.0.1.vsix'
}
ISC