A jest test environment for use with node tmp - temporary work around for https://github.com/raszi/node-tmp/issues/229

README.md

A real version of this will be released soon that can then be installed using npm/yarn.

jest.config.js

module.exports = {
  testEnvironment: './test/util/TmpEnvironment' // change this to the location where you put TmpEnvironment.js
}

sample.test.js

// you can access tmp directly from global scope
const t = tmp.fileSync();

TmpEnvironment.js

// NOTE: place this under e.g. test/util/TmpEnvironment.js
const NodeEnvironment = require('jest-environment-node');
const tmp = require('tmp');

// you may want to set
// tmp.setGracefulCleanup()

class TmpEnvironment extends NodeEnvironment {
  async setup() {
    await super.setup();

    this.global.tmp = tmp;
  }
}

module.exports = TmpEnvironment;

for projects that uses typescript:

declare global {
	var tmp: typeof import('tmp')
}