talk/scripts/test.js

#!/usr/bin/env node

"use strict";
// Set timezone to UTC for stable tests.
process.env.TZ = "UTC";

// Allow importing typescript files.
require("ts-node/register");

// Apply all the configuration provided in the .env file.
require("dotenv").config();

// Do this as the first thing so that any code reading it knows the right env.
process.env.BABEL_ENV = "test";
process.env.NODE_ENV = "test";

// Makes the script crash on unhandled rejections instead of silently
// ignoring them. In the future, promise rejections that are not handled will
// terminate the Node.js process with a non-zero exit code.
process.on("unhandledRejection", err => {
  throw err;
});

const paths = require("../config/paths.ts").default;

const jest = require("jest");
const argv = process.argv.slice(2);
argv.push("--config", paths.appJestConfig);

// Watch unless on CI or in coverage mode
if (
  !process.env.CI && // ensure that the ci env var is not set.
  argv.indexOf("--ci") < 0 && // ensure that the ci flag is not passed
  argv.indexOf("--coverage") < 0 // ensure that the coverage flag is not passed
) {
  argv.push("--watch");
}

jest.run(argv);