Get multiple asynchronous JS modules and execute them

run-tests.js

let requireGlob = require('require-glob')

let tests = await requireGlob(['api/**/test.js'], { 
    // Custom reducer returns flat array of functions
    reducer: (options, moduleExports, module)=> {
      // 'moduleExports' starts as an object, convert to array
      if(!Array.isArray(moduleExports)) moduleExports = []
      moduleExports.push(module.exports)
      return moduleExports
    }
  })

  // Execute all tests sequentially
  for (test of tests) await test()