How to use 'dynamodb describe table' in JavaScript

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function deleteTable(client, table, cb) {
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    function check() {
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        client.describeTable({TableName: table.TableName}, function (err, data) {
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            if (err && err.code === 'ResourceNotFoundException') {
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                cb();
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            } else if (err) {
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                cb(err);
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            } else if (data.Table.TableStatus === 'ACTIVE') {
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                client.deleteTable({TableName: table.TableName}, function (err) {
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                    if (err) return cb(err);
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                    setTimeout(check, 0);
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                });
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            } else {
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                setTimeout(check, 1000);
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            }
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        });
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    }
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    check();
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}