): VersionMismatchFinder {

const commonVersions: CommonVersionsConfiguration = rushConfiguration.getCommonVersions(options.variant);

const projects: VersionMismatchFinderEntity[] = rushConfiguration.projects.map((project) => {

return new VersionMismatchFinderProject(project);

});

const projects: VersionMismatchFinderEntity[] = [];

// Create an object for the purposes of reporting conflicts with preferredVersions

// or xstitchPreferredVersions from common-versions.json

// Make sure this one is first so it doesn't get truncated when a long list is printed

projects.push(new VersionMismatchFinderCommonVersions(commonVersions));

for (const project of rushConfiguration.projects) {

projects.push(new VersionMismatchFinderProject(project));

}

return new VersionMismatchFinder(projects, commonVersions.allowedAlternativeVersions);

}