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import { existsSync, readFileSync } from 'node:fs';

import { dirname, join } from 'node:path';

import { fileURLToPath } from 'node:url';

// Source modules and bundled entry points have different depths. Resolve

// resources from the application package, never from an assumed module depth.

function findApplicationRoot(moduleURL) {

let directory = dirname(fileURLToPath(moduleURL));

for (;;) {

const metadata = join(directory, 'package.json');

if (existsSync(metadata)) {

const { name } = JSON.parse(readFileSync(metadata, 'utf8'));

if (name === 'pdf-math-reader') return directory;

}

const parent = dirname(directory);

if (parent === directory) throw Error('Cannot locate PDFMathReader application resources');

directory = parent;

}

const root = findApplicationRoot(import.meta.url);

export const applicationPath = (...segments) => join(root, ...segments);