/**
 * When a CLI error occurs, the plugin will call this function.
 *
 * By default, it will call `invokeErr()`, thereby stopping Webpack
 * compilation. To allow compilation to continue and log a warning instead,
 * set this to
 * (err, invokeErr, compilation) => {
 * compilation.warnings.push('Sentry CLI Plugin: ' + err.message)
 * }
 *
 * Note: `compilation` is typed as `unknown` in order to preserve
 * compatibility with both Webpack 4 and Webpack 5 types, If you need the
 * correct type, in Webpack 4 use `compilation.Compilation` and in Webpack 5
 * use `Compilation`.
 */
 errorHandler?: (
 err: Error,
 invokeErr: () => void,
 compilation: unknown
 ) => void;