Created by: 0xkoffee
Fixed webpack.config.js so that it can match eslint config for typescript (*.ts) files as well.
eslint.CLIEngine was extracting eslint configs for only js files because paths.appIndexJs was passed to getConfigForFile
eslint.CLIEngine uses the relative path of given path to extract matching configs, so it was only extracting configs for *.js.
Fixed it by passing *.ts instead.