libyear/src/versions.js

A simple measure of software dependency freshness

import { diff, prerelease, valid } from "semver";
/**
 * Filter out "time" metadata about the package
 * and deprecated versions.
 */
export const getSanitisedReleases = (versions, currentVersion) => Object.fromEntries(Object.entries(versions)
    .filter(([version, { deprecated }]) => valid(version) && (deprecated == null || version === currentVersion))
    .map(([version, { time }]) => [version, time]));
/**
 * Filter pre-release versions.
 */
export const getStableReleases = (releases) => Object.fromEntries(Object.entries(releases).filter(([version]) => prerelease(version) == null));
/**
 * Tally releases by type.
 */
export const getReleasesByType = (versions) => {
    const counts = {
        major: 0,
        minor: 0,
        patch: 0,
    };
    versions.forEach((value, index, array) => {
        const type = diff(array[index - 1] ?? value, value);
        if (type != null && Object.hasOwn(counts, type)) {
            counts[type]++;
        }
    });
    return counts;
};