next/dist/esm/lib/has-necessary-dependencies.js

The React Framework

import { existsSync, promises as fs } from 'fs';
import { resolveFrom } from './resolve-from';
import { dirname, join, relative } from 'path';
export async function hasNecessaryDependencies(baseDir, requiredPackages) {
    let resolutions = new Map();
    const missingPackages = [];
    await Promise.all(requiredPackages.map(async (p)=>{
        try {
            const pkgPath = await fs.realpath(resolveFrom(baseDir, `${p.pkg}/package.json`));
            const pkgDir = dirname(pkgPath);
            if (p.exportsRestrict) {
                const fileNameToVerify = relative(p.pkg, p.file);
                if (fileNameToVerify) {
                    const fileToVerify = join(pkgDir, fileNameToVerify);
                    if (existsSync(fileToVerify)) {
                        resolutions.set(p.pkg, fileToVerify);
                    } else {
                        return missingPackages.push(p);
                    }
                } else {
                    resolutions.set(p.pkg, pkgPath);
                }
            } else {
                resolutions.set(p.pkg, resolveFrom(baseDir, p.file));
            }
        } catch (_) {
            return missingPackages.push(p);
        }
    }));
    return {
        resolved: resolutions,
        missing: missingPackages
    };
}

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