Knex 0.10.0 `undefined -> DEFAULT` test

migration.js

'use strict';

exports.up = function(knex) {
  return knex.schema
    .createTable('things', t => {
      t.increments('id').primary().unsigned();
      t.text('a').notNullable().defaultTo('');
      t.integer('b').notNullable().defaultTo(0);
      t.boolean('c').notNullable().defaultTo(false);
    })
  ;
};

exports.down = function(knex) {
  return knex.schema.dropTableIfExists('things');
};

seed.js

'use strict';

exports.seed = knex => {
  let seeds = [{
    a: 'lorem',
    b: 123
  }, {
    a: 'ipsum',
    b: 456
  }, {
    a: 'dolor',
    b: 789,
    c: true
  }];

  let q = knex('things').insert(seeds);
  console.log(`QUERY: ${q.toString()}`);
  return q;
};

Output:

QUERY: insert into "things" ("a", "b", "c") values ('lorem', '123', DEFAULT), ('ipsum', '456', DEFAULT), ('dolor', '789', 'true')
{ method: 'insert',
  options: {},
  bindings:
   [ 'lorem',
     123,
     undefined,
     'ipsum',
     456,
     undefined,
     'dolor',
     789,
     true ],
  sql: 'insert into "things" ("a", "b", "c") values (?, ?, ?), (?, ?, ?), (?, ?, ?)',
  returning: undefined }
error: insert into "things" ("a", "b", "c") values ($1, $2, $3), ($4, $5, $6), ($7, $8, $9) - null value in column "c" violates not-null constraint
    at Connection.parseE (/tmp/node_modules/pg/lib/connection.js:539:11)
    at Connection.parseMessage (/tmp/node_modules/pg/lib/connection.js:366:17)
    at Socket.<anonymous> (/tmp/node_modules/pg/lib/connection.js:105:22)
    at emitOne (events.js:78:13)
    at Socket.emit (events.js:170:7)
    at readableAddChunk (_stream_readable.js:147:16)
    at Socket.Readable.push (_stream_readable.js:111:10)
    at TCP.onread (net.js:524:20)