45       const previousVersion = await mainChangelog.getLastPublishedVersionAsync();  constant
46       const nextVersion = nullthrows(semver.inc(nullthrows(previousVersion), 'major'));
48       if (!previousVersion) {
53       versions[nextVersion] = { ...versions[previousVersion] };
61           versions[previousVersion]?.[pkg.packageName] !== null &&
67       await getChangesFromPackagesAsync(packages, changesMap, versions, previousVersion);
74         previousVersion,
83         previousVersion,
106   previousVersion: string
113       const fromVersion = versions[previousVersion]?.[pkg.packageName];  constant
130   previousVersion: string,
135     const fromVersion = versions[previousVersion]?.[pkg.packageName];  constant
171   previousVersion: string,
179     const fromVersion = versions[previousVersion]?.[pkg.packageName];  constant