rc-js-util/bin/esm/path/impl/path-join.js

A collection of TS and C++ utilities to help writing performant and correct applications, achieved through strict typing and (removable) invariant checking.

/**
 * @public
 * Joins two strings `start` and `end` with a `separator`.
 *
 * @returns The joined path.
 *
 * @remarks
 * See {@link pathJoin}.
 */
export function pathJoin(start, end, separator = "/") {
    const startEndsWithSeparator = start[start.length - 1] === separator;
    const endStartsWithSeparator = end[0] === separator;
    if (startEndsWithSeparator) {
        if (endStartsWithSeparator) {
            return start.concat(end.substring(1));
        }
        else {
            return start.concat(end);
        }
    }
    else {
        if (endStartsWithSeparator) {
            return start.concat(end);
        }
        else {
            return `${start}${separator}${end}`;
        }
    }
}
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