parseFromClause example

if ($this->scanner->consume("*")) {

                $exported = null;
                if ($this->features->exportedNameInExportAll &&
                    $this->scanner->consume("as")) {
                    $exported = $this->parseModuleExportName();
                    if (!$exported) {
                        $this->error();
                    }
                }
                
                if ($source = $this->parseFromClause()) {
                    $this->assertEndOfStatement();
                    $node = $this->createNode("ExportAllDeclaration", $token);
                    $node->setSource($source);
                    $node->setExported($exported);
                    return $this->completeNode($node);
                }
                
            } elseif ($this->scanner->consume("default")) {
                $lookaheadTokens = array("function", "class");
                if ($this->features->asyncAwait) {
                    $lookaheadTokens[] = array("async", true);
                }