jest.config.cjs

const { pathsToModuleNameMapper } = require('ts-jest/utils');

const esModules = [ 'nanostores' ].join('|');

module.exports = {
	transform:               {
		'^.+\\.svelte$':            [
			'svelte-jester',
			{
				'preprocess': true,
			},
		],
		'^.+\\.ts$':                'ts-jest',
		[`(${esModules}).+\\.js$`]: 'babel-jest',
	},
	transformIgnorePatterns: [ `/node_modules/(?!.*${esModules})` ],
	moduleFileExtensions:    [ 'js', 'ts', 'svelte' ],
	moduleNameMapper:        pathsToModuleNameMapper({
		'$lib':   [ 'src/lib' ],
		'$lib/*': [ 'src/lib/*' ],
	}, { prefix: '<rootDir>/' }),
	testEnvironment:         'jsdom',
};