fixAsyncJestErrors

fixAsyncJestErrors.ts

// this doesn't work just yet but I'm trying to figure out the idea because async testing in jest is driving me nuts
async function fixAsyncErrors(action: (expect: (x) => Matchers) => Promise<any>|void) {
    let errors = new Array();
    await (action(x => {
        let matchers = expect(x);
        let matcherProps = Object.getOwnPropertyNames(matchers);
        let safeMatchers = matcherProps.reduce((safeMatchers, p) => {
            let safe = typeof matchers[p] === 'function' ? (...args) => {
                try { matchers[p](...args); }
                catch (e) { errors.push(e); console.error(e) }
            } : matchers[p];
            safeMatchers[p] = safe;
            return safeMatchers;
        }, {})
        return safeMatchers as Matchers;
    }) as Promise<any>).catch(e => errors.push(e))
    return errors;
}