Function reducePathComponents

test/fixtures/snapshot/typescript.js:7879–7902

* Reduce an array of path components to a more simplified path by navigating any * `"."` or `".."` entries in the path.

(components)

     * `"."` or `".."` entries in the path.
     */
    function reducePathComponents(components) {
        if (!ts.some(components))
            return [];
        var reduced = [components[0]];
        for (var i = 1; i < components.length; i++) {
            var component = components[i];
            if (!component)
                continue;
            if (component === ".")
                continue;
            if (component === "..") {
                if (reduced.length > 1) {
                    if (reduced[reduced.length - 1] !== "..") {
                        reduced.pop();
                        continue;
                    }
                }
                else if (reduced[0])
                    continue;
            }
            reduced.push(component);
        }
        return reduced;
    }
    ts.reducePathComponents = reducePathComponents;
    /**
     * Combines paths. If a path is absolute, it replaces any previous path. Relative paths are not simplified.