tierney.js

function handleAsManyLicenseCases(data, licenseID) {
  const returnableLicense = {
    allLicenses: [],
    licenseStatement: licenseID,
    spdx: {
      osi: false,
      fsf: false,
      fsfAndOsi: false,
      deprecated: false,
    },
  };

  if (typeof data.license === 'string') {
    const spdxCheck = checkSpdx(data.license);
    returnableLicense.spdx = spdxCheck; // just directly assign the returned value to the module
    returnableLicense.allLicenses.push(data.license);
  } else if (typeof data.right.license === 'string') {
    // we're going to need both data for left and right for this one
    const spdxCheckLeft = checkSpdx(data.left.license);
    const spdxCheckRight = checkSpdx(data.right.license);

    // now we need to assign
    returnableLicense.spdx.osi =
      spdxCheckLeft.osi === true && spdxCheckRight.osi === true;

    returnableLicense.spdx.fsf =
      spdxCheckLeft.fsf === true && spdxCheckRight.fsf === true;

    returnableLicense.spdx.fsfAndOsi =
      spdxCheckLeft.fsfAndOsi === true && spdxCheckRight.fsfAndOsi === true;

    returnableLicense.spdx.deprecated =
      spdxCheckLeft.deprecated === true && spdxCheckRight.deprecated === true;

    returnableLicense.allLicenses.push(data.left.license, data.right.license);
  } else if (typeof data.right.left.license === 'string') {
    const spdxCheckLeft = checkSpdx(data.left.license);
    const spdxCheckRightLeft = checkSpdx(data.right.license);
    const spdxCheckRightRight = checkSpdx(data.right.license);

    returnableLicense.spdx.osi =
      spdxCheckLeft.osi === true &&
      spdxCheckRightLeft.osi === true &&
      spdxCheckRightRight.osi === true;

    returnableLicense.spdx.fsf =
      spdxCheckLeft.fsf === true &&
      spdxCheckRightLeft.fsf === true &&
      spdxCheckRightRight.osi === true;

    returnableLicense.spdx.fsfAndOsi =
      spdxCheckLeft.fsfAndOsi === true &&
      spdxCheckRightLeft.fsfAndOsi === true &&
      spdxCheckRightRight.osi === true;

    returnableLicense.spdx.deprecated =
      spdxCheckLeft.deprecated === true &&
      spdxCheckRightLeft.deprecated === true &&
      spdxCheckRightRight.osi === true;

    returnableLicense.allLicenses.push(
      data.left.license,
      data.right.left.license,
    );
  }

  return returnableLicense;
}

function checkSpdx(licenseToCheck) {
  const spdx = {
    osi: OSI.includes(licenseToCheck),
    fsf: FSF.includes(licenseToCheck),
    fsfAndOsi: FSFandOSI.includes(licenseToCheck),
    deprecated: deprecated.includes(licenseToCheck),
  };

  return spdx;
}

console.log(buildDefinitionsAndValidation('MIT'));
console.log(buildDefinitionsAndValidation('MIT OR CC0-1.0'));
console.log(buildDefinitionsAndValidation('MIT OR (CC0-1.0 AND ISC)'));