| 1 | import { getBrowserInstance } from './get-browser.js' |
| 2 | |
| 3 | const browser = getBrowserInstance() |
| 4 | |
| 5 | export async function evalOnPage <R, T = R> (src: string, transform: (arg: R) => T = (o: any) => o): Promise<T> { |
| 6 | const deferred = Promise.withResolvers<T>() |
| 7 | |
| 8 | // test to make sure @ipshipyard/libp2p-inspector-metrics is present on the page |
| 9 | browser.devtools.inspectedWindow.eval<R>(src, (result, isException) => { |
| 10 | if (isException != null) { |
| 11 | // eslint-disable-next-line no-console |
| 12 | console.error('could not eval', src, isException) |
| 13 | deferred.reject(new Error('Exception')) |
| 14 | return |
| 15 | } |
| 16 | |
| 17 | try { |
| 18 | deferred.resolve(transform(result)) |
| 19 | } catch (err) { |
| 20 | deferred.reject(err) |
| 21 | } |
| 22 | }) |
| 23 | |
| 24 | return deferred.promise |
| 25 | } |