package.json

"scripts": {    
    "compile": "node ../../scripts/compile.js",
    "lint": "node ../../scripts/lint.js",
    "pretest": "node ../../scripts/pretest.js",
    "release:major": "npm test && npm run compile && npm version major -m \"Released version %s\" && npm publish && git push",
    "release:minor": "npm test && npm run compile && npm version minor -m \"Released version %s\" && npm publish && git push",
    "release:patch": "npm test && npm run compile && npm version patch -m \"Released version %s\" && npm publish && git push",
    "test": "node ../../scripts/test.js"
}

script-pretest.js

const shell = require('shelljs');
// Paths are relative to location script is called from
// Uncomment next line to view work directory scripts are executed from
// shell.exec('pwd');

shell.exec('npm run lint');

scripts-lint.js

const shell = require('shelljs');
// Paths are relative to location script is called from
// Uncomment next line to view work directory scripts are executed from
// shell.exec('pwd');

shell.exec('../../node_modules/.bin/eslint **/*.js, **/*.jsx');

if (shell.exec('../../node_modules/.bin/eslint **/*.js, **/*.jsx').code !== 0) {
  shell.echo('Error: JS lint errors detected');
  shell.exit(1);
}

shell.exec('../../node_modules/.bin/eslint **/*.js, **/*.jsx', function(code, stdout, stderr) {
  if (code !== 0) {
    process.exit(1);
  }
  // console.log('Exit code:', code);
  // console.log('Program output:', stdout);
  // console.log('Program stderr:', stderr);
});

scripts-test.js

const shell = require('shelljs');
// Paths are relative to location script is called from
// Uncomment next line to view work directory scripts are executed from
// shell.exec('pwd');

shell.exec('../../node_modules/.bin/jest  --config ../../jestconfig.json');

Using the following in lint.js

shell.exec('../../node_modules/.bin/eslint **/*.js, **/*.jsx', function(code, stdout, stderr) {
  if (code !== 0) {
    shell.exit(code);
  }
});

And call npm run lint in the npm-script "pretest" rather than node ../../scripts/pretest.js seems to cause the script to error out correctly if there is lint rather than moving on to running tests.