// Open opens a Go plugin.
// If a path has already been opened, then the existing *Plugin is returned.
// It is safe for concurrent use by multiple goroutines.
func Open(path string) (*Plugin, error) {
	// GopherJS: load the plugin from the .js file using module.exports.
}

// Lookup searches for a symbol named symName in plugin p.
// A symbol is any exported variable or function.
// It reports an error if the symbol is not found.
// It is safe for concurrent use by multiple goroutines.
func (p *Plugin) Lookup(symName string) (Symbol, error) {
	// GopherJS: lookup the symbol using the lookup table.
}