I want to test a quite simple JS function export function displaySpinner() { const loadingOverlayDOM = document.createElement('DIV'); const spinner = document.createElement('IMG'); loadingOver...

I want to use jest.runCLI() in gulp for executing only a changed test. How can I do this? How can I run just one test with jest.runCLI()?

I get the following error when running gulp test: Error: Please run node with the --harmony flag! Here is my gulp task: var jest = require('gulp-jest'); gulp.task('test', function() { return ...