Function join

packages/less/lib/less-browser/file-manager.js:14–19

(basePath, laterPath)

    },

    join(basePath, laterPath) {
        if (!basePath) {
            return laterPath;
        }
        return this.extractUrlParts(laterPath, basePath).path;
    },

    doXHR(url, type, callback, errback) {
        const xhr = new XMLHttpRequest();