tsro/dist/utils/getTsAliases.js

TypeScript Remove Orphaned (tsro) is a CLI utility and library for TypeScript projects that detects and removes files containing invalid imports — imports that refer to nonexistent entities or nonexistent modules.

export const getTsAliases = (program) => {
    const { paths } = program.getCompilerOptions();
    const pathsArray = paths ? Object.entries(paths) : [];
    return pathsArray.map(([alias, _paths]) => alias);
};