next/dist/esm/lib/resolve-build-paths.js

The React Framework

import { promisify } from 'util';
import globOriginal from 'next/dist/compiled/glob';
import * as Log from '../build/output/log';
import path from 'path';
import fs from 'fs';
import isError from './is-error';
const glob = promisify(globOriginal);
/**
 * Resolves glob patterns and explicit paths to actual file paths
 * Categorizes them into App Router and Pages Router paths
 *
 * @param patterns - Array of glob patterns or explicit paths
 * @param projectDir - Root project directory
 * @returns Object with categorized app and page paths
 */ export async function resolveBuildPaths(patterns, projectDir) {
    const appPaths = new Set();
    const pagePaths = new Set();
    for (const pattern of patterns){
        const trimmed = pattern.trim();
        if (!trimmed) {
            continue;
        }
        // Detect if pattern is glob pattern (contains glob special chars)
        const isGlobPattern = /[*?[\]{}!]/.test(trimmed);
        if (isGlobPattern) {
            try {
                // Resolve glob pattern
                const matches = await glob(trimmed, {
                    cwd: projectDir
                });
                if (matches.length === 0) {
                    Log.warn(`Glob pattern "${trimmed}" did not match any files`);
                }
                for (const file of matches){
                    // Skip directories, only process files
                    if (!fs.statSync(path.join(projectDir, file)).isDirectory()) {
                        categorizeAndAddPath(file, appPaths, pagePaths);
                    }
                }
            } catch (error) {
                throw Object.defineProperty(new Error(`Failed to resolve glob pattern "${trimmed}": ${isError(error) ? error.message : String(error)}`), "__NEXT_ERROR_CODE", {
                    value: "E892",
                    enumerable: false,
                    configurable: true
                });
            }
        } else {
            // Explicit path - categorize based on prefix
            categorizeAndAddPath(trimmed, appPaths, pagePaths, projectDir);
        }
    }
    return {
        appPaths: Array.from(appPaths).sort(),
        pagePaths: Array.from(pagePaths).sort()
    };
}
/**
 * Categorizes a file path to either app or pages router based on its prefix,
 * and normalizes it to the format expected by Next.js internal build system.
 *
 * The internal build system expects:
 * - App router: paths with leading slash (e.g., "/page.tsx", "/dashboard/page.tsx")
 * - Pages router: paths with leading slash (e.g., "/index.tsx", "/about.tsx")
 *
 * Examples:
 * - "app/page.tsx" → appPaths.add("/page.tsx")
 * - "app/dashboard/page.tsx" → appPaths.add("/dashboard/page.tsx")
 * - "pages/index.tsx" → pagePaths.add("/index.tsx")
 * - "pages/about.tsx" → pagePaths.add("/about.tsx")
 * - "/page.tsx" → appPaths.add("/page.tsx") (already in app router format)
 */ function categorizeAndAddPath(filePath, appPaths, pagePaths, projectDir) {
    // Normalize path separators to forward slashes (Windows compatibility)
    const normalized = filePath.replace(/\\/g, '/');
    // Skip non-file entries (like directories without extensions)
    if (normalized.endsWith('/')) {
        return;
    }
    if (normalized.startsWith('app/')) {
        // App router path: remove 'app/' prefix and ensure leading slash
        // "app/page.tsx" → "/page.tsx"
        // "app/dashboard/page.tsx" → "/dashboard/page.tsx"
        const withoutPrefix = normalized.slice(4) // Remove "app/"
        ;
        appPaths.add('/' + withoutPrefix);
    } else if (normalized.startsWith('pages/')) {
        // Pages router path: remove 'pages/' prefix and add leading slash
        // "pages/index.tsx" → "/index.tsx"
        // "pages/about.tsx" → "/about.tsx"
        const withoutPrefix = normalized.slice(6) // Remove "pages/"
        ;
        pagePaths.add('/' + withoutPrefix);
    } else if (normalized.startsWith('/')) {
        // Leading slash suggests app router format (already in correct format)
        // "/page.tsx" → "/page.tsx" (no change needed)
        appPaths.add(normalized);
    } else {
        // No obvious prefix - try to detect based on file existence
        if (projectDir) {
            const appPath = path.join(projectDir, 'app', normalized);
            const pagesPath = path.join(projectDir, 'pages', normalized);
            if (fs.existsSync(appPath)) {
                appPaths.add('/' + normalized);
            } else if (fs.existsSync(pagesPath)) {
                pagePaths.add('/' + normalized);
            } else {
                // Default to pages router for paths without clear indicator
                pagePaths.add('/' + normalized);
            }
        } else {
            // Without projectDir context, default to pages router
            pagePaths.add('/' + normalized);
        }
    }
}
/**
 * Parse build paths from comma-separated format
 * Supports:
 * - Comma-separated values: "app/page.tsx,app/about/page.tsx"
 *
 * @param input - String input to parse
 * @returns Array of path patterns
 */ export function parseBuildPathsInput(input) {
    // Comma-separated values
    return input.split(',').map((p)=>p.trim()).filter((p)=>p.length > 0);
}

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