index.ts

// imports mocha for the browser, defining the `mocha` global.
require('mocha/mocha');

exportfunctionrun(): Promise<void>{

returnnewPromise((c,e)=>{
mocha.setup({
ui: 'tdd',
reporter: undefined
});

// bundles all files in the current directory matching `*.test`
constimportAll=(r: __WebpackModuleApi.RequireContext)=>r.keys().forEach(r);
importAll(require.context('.',true,/\.test$/));

try{
// Run the mocha test
mocha.run(failures=>{
if(failures>0){
e(newError(`${failures} tests failed.`));
}else{
c();
}
});
}catch(err){
console.error(err);
e(err);
}
});
}