tangram/src/utils/thread.js

WebGL Maps for Vector Tiles

/*jshint worker: true*/

// Mark thread as main or worker
const Thread = {};

try {
    if (window instanceof Window && window.document instanceof HTMLDocument) { // jshint ignore:line
        Thread.is_worker = false;
        Thread.is_main   = true;
    }
}
catch(e) {
    Thread.is_worker = true;
    Thread.is_main   = false;

    // Patch for 3rd party libs that require these globals to be present. Specifically, FontFaceObserver.
    // Brittle solution but allows that library to load on worker threads.
    self.window = { document: {} };
    self.document = self.window.document;
}

export default Thread;