fix: prevent DOM elements with id="process" from hijacking environment detection

[FovirDev]

Problem

Browsers implement named access on windows object, which means any DOM element with an id attribute can be accessed via window.<id>.

For example, if an attribute's id is process, like:

<h2 id="process">Process</h2>

Then, window.process points to a DOM element instead of being undefined.

And FlexSearch's bundle entry point contains:

if(typeof module!=='undefined')self=module;else if(typeof process !== 'undefined')self=process;self._factory=_f;

When window.process is a DOM element, typeof process !== 'undefined' is true, so self is assigned to the DOM element, causing FlexSearch initialization to fail.

Fix

Add a typeof process.env !== 'undefined' to exclude DOM elements

if(typeof module!=='undefined')self=module;else if(typeof process !== 'undefined' && typeof process.env !== 'undefined')self=process;self._factory=_f;

[ts-thomas]

Thanks a lot for this fix 🙏🙌