How to use @azure/oad - 1 common examples

async function runOad(oldSpec: string, newSpec: string) {
  if (oldSpec === null || oldSpec === undefined || typeof oldSpec.valueOf() !== 'string' || !oldSpec.trim().length) {
    throw new Error('oldSpec is a required parameter of type "string" and it cannot be an empty string.');
  }

  if (newSpec === null || newSpec === undefined || typeof newSpec.valueOf() !== 'string' || !newSpec.trim().length) {
    throw new Error('newSpec is a required parameter of type "string" and it cannot be an empty string.');
  }

  console.log(`>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>`);
  console.log(`Old Spec: "${oldSpec}"`);
  console.log(`New Spec: "${newSpec}"`);
  console.log(`>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>`);

  let result = await oad.compare(oldSpec, newSpec, { consoleLogLevel: 'warn' });
  console.log(result);

  if (!result) {
    return;
  }

  // fix up output from OAD, it does not output valid JSON
  result = '[' + result.replace(/}\s+{/gi,"},{") + ']'

  return JSON.parse(result);
}