developer.mozilla.org
The import.meta object exposes context-specific metadata to a JavaScript module. It contains information about the module, like the module's URL. The syntax consists of the keyword , a dot, and the identifier meta. Normally the left-hand side of the dot is the object on which property access is performed, but here import is not really an object.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/import.meta