setup-python/node_modules/resolve-from/index.js

'use strict';
const path = require('path');
const Module = require('module');

const resolveFrom = (fromDir, moduleId, silent) => {
	if (typeof fromDir !== 'string') {
		throw new TypeError(`Expected \`fromDir\` to be of type \`string\`, got \`${typeof fromDir}\``);
	}

	if (typeof moduleId !== 'string') {
		throw new TypeError(`Expected \`moduleId\` to be of type \`string\`, got \`${typeof moduleId}\``);
	}

	fromDir = path.resolve(fromDir);
	const fromFile = path.join(fromDir, 'noop.js');

	const resolveFileName = () => Module._resolveFilename(moduleId, {
		id: fromFile,
		filename: fromFile,
		paths: Module._nodeModulePaths(fromDir)
	});

	if (silent) {
		try {
			return resolveFileName();
		} catch (err) {
			return null;
		}
	}

	return resolveFileName();
};

module.exports = (fromDir, moduleId) => resolveFrom(fromDir, moduleId);
module.exports.silent = (fromDir, moduleId) => resolveFrom(fromDir, moduleId, true);