Function jsDeclareFile

src/platforms/wasm/fs_wasm.cpp.hpp:309–317

}

EMSCRIPTEN_KEEPALIVE bool jsDeclareFile(const char *path, size_t len) {
    // declare a file and it's length. But don't fill it in yet
    auto inserted = fl::_createIfNotExists(fl::string(path), len);
    if (!inserted) {
        FL_WARN("File can only be declared once.");
        return false;
    }
    return true;
}

EMSCRIPTEN_KEEPALIVE void fastled_declare_files(const char* jsonStr) {
    fl::json doc = fl::json::parse(fl::string(jsonStr));