only-changed-jest-watch-plugin/example/node_modules/pn/_promise.js

Jest watch plugin for running either only the modified test (for TDD), or tests of dependant modules

// Allow the user to customize the Promise type returned by this library.
var mypromise = global.Promise;
module.exports = function getOrSetPromise(p) {
    if (p) { mypromise = p; }
    return mypromise;
};