ls-engines/test/mock.js

Determine if your dependency graph's stated "engines" criteria is met.

'use strict';

function mockModule(resolvedSpecifier, replacement) {
	require(resolvedSpecifier); // eslint-disable-line global-require
	const Module = require.cache[resolvedSpecifier];
	Module.exports = replacement;
}

const origGetJSON = require('get-json');
const mockedNodeVersions = require('./mocks/node-versions.json');

mockModule(
	require.resolve('get-json'),
	async function getJSON(url) {
		if (url === 'https://nodejs.org/dist/index.json') {
			return mockedNodeVersions;
		}
		return origGetJSON(url);
	},
);