next/dist/esm/lib/dist-dir.js

The React Framework

import * as path from 'node:path';
export class InvalidDistDirError extends Error {
    constructor(distDir, appDir, workspaceRoot){
        super(`The configured distDir should be inside of the application directory ` + `or the workspace containing it, and must not contain the application ` + `directory itself:\n\n` + `  distDir:        ${distDir}\n` + `  application:    ${appDir}\n` + `  workspace root: ${workspaceRoot}\n\n` + `Read more: https://nextjs.org/docs/messages/invalid-dist-dir`);
        this.name = 'InvalidDistDirError';
    }
}
/** Whether `descendant` is strictly inside `ancestor`. */ // TODO: Account for symlinks when validating containment.
function isStrictlyInside(ancestor, descendant) {
    const relative = path.relative(path.resolve(ancestor), descendant);
    return relative !== '' && relative !== '..' && !relative.startsWith('..' + path.sep) && !path.isAbsolute(relative);
}
/**
 * Throws unless `distDir` is inside the application or workspace, without
 * containing the application itself.
 */ export function verifyDistDir(distDir, appDir, workspaceRoot) {
    const resolvedDistDir = path.resolve(distDir);
    const resolvedAppDir = path.resolve(appDir);
    const resolvedWorkspaceRoot = path.resolve(workspaceRoot);
    const isInsideBoundary = isStrictlyInside(resolvedAppDir, resolvedDistDir) || isStrictlyInside(resolvedWorkspaceRoot, resolvedDistDir);
    const containsApp = resolvedDistDir === resolvedAppDir || isStrictlyInside(resolvedDistDir, resolvedAppDir);
    if (isInsideBoundary && !containsApp) {
        return;
    }
    throw new InvalidDistDirError(resolvedDistDir, resolvedAppDir, resolvedWorkspaceRoot);
}

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