npm-check-updates/build/src/types/PackageManager.d.ts

Find newer versions of dependencies than what your package.json allows

import { GetVersion } from './GetVersion';
import { Index } from './IndexType';
import { Options } from './Options';
import { Version } from './Version';
import { VersionSpec } from './VersionSpec';
/** The package manager API that ncu uses to fetch versions and meta information for packages. Includes npm and yarn, and others can be added as needed. */
export interface PackageManager {
    defaultPrefix?: (options: Options) => Promise<string | undefined>;
    list?: (options: Options) => Promise<Index<Version>>;
    latest: GetVersion;
    minor?: GetVersion;
    newest?: GetVersion;
    patch?: GetVersion;
    greatest?: GetVersion;
    semver?: GetVersion;
    packageAuthorChanged?: (packageName: string, from: VersionSpec, to: VersionSpec, options?: Options) => Promise<boolean>;
    getPeerDependencies?: (packageName: string, version: Version) => Promise<Index<Version>>;
}