suggestion to use str.indexOf(searchString) === 0 for better compatibility

[Lee JeongHo]

According to caniuse, the browser coverage for the fetch API is similar to the support range for String.prototype.startsWith,
which suggests that browsers requiring a fetch polyfill would likely also need a polyfill for the startsWith API.

Therefore, it would be advisable to use str.indexOf(searchString) === 0 instead of startsWith in the code for better compatibility across browsers

fetch/fetch.js

Lines 544 to 550 in b5cee50

 // This check if specifically for when a user fetches a file locally from the file system 
 // Only if the status is out of a normal range 
 if (request.url.startsWith('file://') && (xhr.status < 200 || xhr.status > 599)) { 
   options.status = 200; 
 } else { 
   options.status = xhr.status; 
 } 

[Jake Champion]

I'll happily accept a pull request if you are up for submitting one

[Vamshi Suram]

@elasim Good point 👍