prepareCrosswalk updates

[vnessamartinez]

No description provided.

[vnessamartinez]

The following error shows up when a column is blank in a row in a crosswalk file. It looks for an asset at the path in the column, but when the field is blank, it throws an error because it doesn't exist. For example, this repo has a crosswalk that has both png and jpg images, in that order. When the png field is blank because there is something in the jpg column instead, Baker throws the following error. This PR adds a check for it to first check that there is something in the field before looking for the path.

[jperezlatimes]

just check if (path), this will catch undefined, null, and empty strings. If there is no path we should show an error or warning. So code should look like:

if (!path) {
  console.error(`Could not find static path for asset :${normalizedAssetName} and path: ${path}`);
  return;
}

preppedData.assets[normalizedAssetType][normalizedAssetName][ext] = this.getStaticPath(path);