The actual result of toRegex dosen't match the document，missing symbol ^$

[EAGzzyCSL]

document example

link: toRegex

const picomatch = require('picomatch');
// picomatch.toRegex(source[, options]);

const { output } = picomatch.parse('*.js');
console.log(picomatch.toRegex(output));
//=> /^(?:(?!\.)(?=.)[^/]*?\.js)$/

actual result

missing symbol ^ & $ and with other differences

- /^(?:(?!\.)(?=.)[^/]*?\.js)$/
+ /(?!\.)(?=.)[^/]*?\.js/

version

both v3 and v4