Node.js datatables editor - Complex left join not working in node.js

I'm using the node.js datatable editor library. When trying to do a complex left join 'portfolios_isin_mm.isin AND (securities.mic = portfolios_isin_mm.mic)' ... like this:

    let editor = new Editor( db, 'portfolios_isin_mm' )
        .fields(
            new Field( 'portfolios_isin_mm.account_id' ),
            new Field( 'portfolios_isin_mm.user_id' ),
            new Field( 'portfolios_isin_mm.uid_foreign' )
            new Field( 'securities.issuer_name' ),
            new Field( 'portfolios_isin_mm.isin' ),
            new Field( 'portfolios_isin_mm.mic' ),
           )

        .leftJoin( 'portfolios_isin', 'portfolios_isin.id', '=', 'portfolios_isin_mm.uid_foreign' )
        .leftJoin( 'securities', 'securities.isin', '=', 'portfolios_isin_mm.isin AND (securities.mic = portfolios_isin_mm.mic)' );
        //.leftJoin( 'securities', 'securities.isin', '=', 'portfolios_isin_mm.isin' );

I'm getting an error. Debugging the error shows me:

    { Error: ER_PARSE_ERROR: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '.`mic)`' at line 1
        at Query.Sequence._packetToError (/home/myproject/node_modules/mysql/lib/protocol/sequences/Sequence.js:47:14)
        at Query.ErrorPacket (/home/myproject/node_modules/mysql/lib/protocol/sequences/Query.js:77:18)
        at Protocol._parsePacket (/home/myproject/node_modules/mysql/lib/protocol/Protocol.js:278:23)
        at Parser.write (/home/myproject/node_modules/mysql/lib/protocol/Parser.js:76:12)
        at Protocol.write (/home/myproject/node_modules/mysql/lib/protocol/Protocol.js:38:16)
        at Socket.<anonymous> (/home/myproject/node_modules/mysql/lib/Connection.js:91:28)
        at Socket.<anonymous> (/home/myproject/node_modules/mysql/lib/Connection.js:502:10)
        at Socket.emit (events.js:182:13)
        at addChunk (_stream_readable.js:283:12)
        at readableAddChunk (_stream_readable.js:264:11)
        at Socket.Readable.push (_stream_readable.js:219:10)
        at TCP.onStreamRead [as onread] (internal/stream_base_commons.js:94:17)
        --------------------
        at Protocol._enqueue (/home/myproject/node_modules/mysql/lib/protocol/Protocol.js:144:48)
        at Connection.query (/home/myproject/node_modules/mysql/lib/Connection.js:200:25)
        at /home/myproject/node_modules/knex/lib/dialects/mysql/index.js:152:18
        at Promise._execute (/home/myproject/node_modules/bluebird/js/release/debuggability.js:313:9)
        at Promise._resolveFromExecutor (/home/myproject/node_modules/bluebird/js/release/promise.js:483:18)
        at new Promise (/home/myproject/node_modules/bluebird/js/release/promise.js:79:10)
        at Client_MySQL._query (/home/myproject/node_modules/knex/lib/dialects/mysql/index.js:146:12)
        at Client_MySQL.query (/home/myproject/node_modules/knex/lib/client.js:197:17)
        at Runner.<anonymous> (/home/myproject/node_modules/knex/lib/runner.js:146:36)
        at Runner.tryCatcher (/home/myproject/node_modules/bluebird/js/release/util.js:16:23)
        at Runner.query (/home/myproject/node_modules/bluebird/js/release/method.js:15:34)
        at /home/myproject/node_modules/knex/lib/runner.js:65:21
        at tryCatcher (/home/myproject/node_modules/bluebird/js/release/util.js:16:23)
        at /home/myproject/node_modules/bluebird/js/release/using.js:185:26
        at tryCatcher (/home/myproject/node_modules/bluebird/js/release/util.js:16:23)
        at Promise._settlePromiseFromHandler (/home/myproject/node_modules/bluebird/js/release/promise.js:512:31)
      code: 'ER_PARSE_ERROR',
      errno: 1064,
      sqlMessage:
       'You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near \'.`mic)`\' at line 1',
      sqlState: '42000',
      index: 0,
      sql:
       'select count(`portfolios_isin_mm`.`id`) as `cnt` from `portfolios_isin_mm` left join `portfolios_isin` on `portfolios_isin`.`id` = `portfolios_isin_mm`.`uid_foreign` left join `securities` on `securities`.`isin` = `portfolios_isin_mm`.`isin AND (securities`.`mic = portfolios_isin_mm`.`mic)`' }

... with the php libraries it was working just fine:

    ->leftJoin( 'securities', 'securities.isin', '=', 'portfolios_isin_mm.isin AND (securities.mic = portfolios_isin_mm.mic)' ) 

How can I get the complex left join to work in node.js as well?

... I'm using $ node -v ... v10.15.0 and "datatables.net-editor-server": "^1.8.1"