Alter string to enum - postgresql

Question

I am using the method below to change the column type from string to enum. Is there an alternative way to do this?
Is it possible to use it as a knex.raw to form such query?
CREATE TYPE type AS ENUM ('disabled', 'include', 'exclude');
ALTER TABLE test_table ALTER COLUMN test_col DROP DEFAULT;
ALTER TABLE test_table ALTER COLUMN test_col TYPE logic USING(test_col::type), ALTER COLUMN test_col SET DEFAULT 'disabled'::logic;
return schema
.table('offers', function (table) {
cols.forEach(function (column) {
table.renameColumn(column, column + '_old');
});
}).then(function () {
var schema = knex.schema;
return schema.table('offers', function (table) {
cols.forEach(function (column) {
table.enum(column, ['disabled', 'include', 'exclude']).defaultTo('disabled');
});
});
}).then(function () {
return knex.select('*').from('offers');
}).then(function (rows) {
return Promise.map(rows, function (row) {
var data = {};
cols.forEach(function (column) {
data[column] = row[column+'_old'];
}, data);
return knex('offers').where('id', '=', row.id).update(data);
})
}).then(function () {
var schema = knex.schema;
return schema.table('offers',function (table) {
cols.forEach(function (column) {
table.dropColumn(column+'_old');
});
});
});