tests/cases/conformance/salsa/chrome-devtools-DOMExtension.js(2,17): error TS2339: Property 'removeChildren' does not exist on type 'Event'.
tests/cases/conformance/salsa/chrome-devtools-DOMExtension.js(3,10): error TS2339: Property 'textContent' does not exist on type 'Event'.


==== tests/cases/conformance/salsa/chrome-devtools-DOMExtension.js (2 errors) ====
    // Extend that DOM! (doesn't work, but shouldn't crash)
    Event.prototype.removeChildren = function () {
                    ~~~~~~~~~~~~~~
!!! error TS2339: Property 'removeChildren' does not exist on type 'Event'.
        this.textContent = 'nope, not going to happen'
             ~~~~~~~~~~~
!!! error TS2339: Property 'textContent' does not exist on type 'Event'.
    }
    