Simplified code [skip ci]

Author: ankane

src/sequelize/halfvec.js

@@ -52,8 +52,7 @@ inherits(PgTypes.HALFVEC, DataTypes.HALFVEC);
 // @ts-ignore
 PgTypes.HALFVEC.parse = DataTypes.HALFVEC.parse;
 PgTypes.HALFVEC.types = {postgres: ['halfvec']};
-// @ts-ignore
-DataTypes.postgres.HALFVEC.key = 'halfvec';
+PgTypes.HALFVEC.key = 'halfvec';
 
 // for migrations
 // @ts-ignore

src/sequelize/sparsevec.js

@@ -54,8 +54,7 @@ inherits(PgTypes.SPARSEVEC, DataTypes.SPARSEVEC);
 // @ts-ignore
 PgTypes.SPARSEVEC.parse = DataTypes.SPARSEVEC.parse;
 PgTypes.SPARSEVEC.types = {postgres: ['sparsevec']};
-// @ts-ignore
-DataTypes.postgres.SPARSEVEC.key = 'sparsevec';
+PgTypes.SPARSEVEC.key = 'sparsevec';
 
 // for migrations
 // @ts-ignore

src/sequelize/vector.js

@@ -52,8 +52,7 @@ inherits(PgTypes.VECTOR, DataTypes.VECTOR);
 // @ts-ignore
 PgTypes.VECTOR.parse = DataTypes.VECTOR.parse;
 PgTypes.VECTOR.types = {postgres: ['vector']};
-// @ts-ignore
-DataTypes.postgres.VECTOR.key = 'vector';
+PgTypes.VECTOR.key = 'vector';
 
 // for migrations
 // @ts-ignore