@lifaon/path/.private/segments/functions/get/get-relative-path-segments.js

Useful tool to manage paths like the URL object

import { pushSegmentIntoMutablePathSegments, } from '../mutate/push-segment-into-mutable-path-segments.js';
import { getCommonBaseOfManyPathSegments } from './get-common-base-of-many-path-segments.js';
/**
 * Returns the relative `IPathSegments` between `from` and `to`:
 *  - if no common base path => `[]`
 *  - else `['..' | '.', ...]`
 */
export function getRelativePathSegments(from, to, options) {
    const commonBase = getCommonBaseOfManyPathSegments([from, to]);
    if (commonBase === null) {
        return null;
    }
    else {
        const relativePath = ['.'];
        for (let i = commonBase.length; i < from.length; i++) {
            pushSegmentIntoMutablePathSegments(relativePath, '..', options);
        }
        for (let i = commonBase.length; i < to.length; i++) {
            pushSegmentIntoMutablePathSegments(relativePath, to[i], options);
        }
        return relativePath;
    }
}
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