// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// This module is browser compatible.
import { assertPath } from "./assert_path.js";
export function stripSuffix(name, suffix) {
    if (suffix.length >= name.length) {
        return name;
    }
    const lenDiff = name.length - suffix.length;
    for (let i = suffix.length - 1; i >= 0; --i) {
        if (name.charCodeAt(lenDiff + i) !== suffix.charCodeAt(i)) {
            return name;
        }
    }
    return name.slice(0, -suffix.length);
}
export function lastPathSegment(path, isSep, start = 0) {
    let matchedNonSeparator = false;
    let end = path.length;
    for (let i = path.length - 1; i >= start; --i) {
        if (isSep(path.charCodeAt(i))) {
            if (matchedNonSeparator) {
                start = i + 1;
                break;
            }
        }
        else if (!matchedNonSeparator) {
            matchedNonSeparator = true;
            end = i + 1;
        }
    }
    return path.slice(start, end);
}
export function assertArgs(path, suffix) {
    assertPath(path);
    if (path.length === 0)
        return path;
    if (typeof suffix !== "string") {
        throw new TypeError(`Suffix must be a string, received "${JSON.stringify(suffix)}"`);
    }
}
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