Attempt at creating graphile plugin

GraphileTestPlugin.js

const myOwnEscapeFn = (sql, sqlFragment, type) => {
    const actualType = type.domainBaseType || type;
    if (actualType.category === "N") {
        if (actualType.id === 20) {
            return sql.fragment `to_b64_extid(${sqlFragment})`;
        }
        if (["21" /* int2 */,
            "23" /* int4 */,
            "700" /* float4 */,
            "701" /* float8 */
        ].includes(actualType.id)) {
            // No need for special handling
            return sqlFragment;
        } // Otherwise force the id to be a string
        return sql.fragment `((${sqlFragment})::numeric)::text`;
    }
    return sqlFragment;
};
exports.TestPlugin = function TestPlugin(builder) {
    builder.hook("GraphQLObjectType:fields", function (fieldConfig, build, context) {
        const { pgIntrospectionResultsByKind, // From PgIntrospectionPlugin
        pgRegisterGqlTypeByTypeId, // From PgTypesPlugin
        pgRegisterGqlInputTypeByTypeId, // From PgTypesPlugin
        pg2GqlMapper, // From PgTypesPlugin
        sql: sql, // From PgBasicsPlugin, this is equivalent to `require('pg-sql2')` but avoids multiple-module conflicts
        graphql, } = build;
        const addDataGeneratorForField = context.addDataGeneratorForField;
        pgIntrospectionResultsByKind.class.forEach(table => {
            const tablePgType = table.type;
            addDataGeneratorForField("id", () => {
                return {
                    pgQuery: queryBuilder => {
                        queryBuilder.selectIdentifiers2 = function (table) {
                            if (this.selectedIdentifiers)
                                return;
                            const primaryKey = table.primaryKeyConstraint;
                            if (!primaryKey)
                                return;
                            const primaryKeys = primaryKey.keyAttributes;
                            this.select(sql.fragment `json_build_array(${sql.join(primaryKeys.map(key => myOwnEscapeFn(sql, sql.fragment `${this.getTableAlias()}.${sql.identifier(key.name)}`, key.type)), ", ")})`, "__identifiers");
                            this.selectedIdentifiers = true;
                        };
                        queryBuilder.selectIdentifiers2(table);
                    }
                };
            });
        });
        return fieldConfig;
    });
};