PostgreSQL INTERVAL column generates invalid default value in model definition

[pfortuna]

When generating models from a PostgreSQL database that includes a column of type INTERVAL, the generated Sequelize model contains invalid code — both in the type and in the defaultValue fields.

Example:

CREATE TABLE some_table (
    id SERIAL PRIMARY KEY,
    name TEXT NOT NULL,
    waittime INTERVAL DEFAULT INTERVAL '60 seconds',
);

The last column will result in:

        waittime: {
            type: DataTypes.INTEGER,
            allowNull: true,
            defaultValue: 00:01:00
        }

Where 00:01:00 should be '60 seconds' instead.
It throws a syntax error and you have to correct it by hand.

These are the parameters i'm using:

sequelize-auto \
  -h "$DB_HOST" \
  -d "$POSTGRES_DB" \
  -u "$POSTGRES_USER" \
  -x "$POSTGRES_PASSWORD" \
  -p "$DB_PORT" \
  --dialect postgres \
  --directory /models \
  --noInit \
  --additional /usr/src/app/additional.json

additional.json

{
    "timestamps": true,
    "underscored": true,
    "createdAt": "created_at",
    "updatedAt": "updated_at"
}

Is this a known bug or limitation?
Any workaround?