fix: throws when using preserveTimezones on Node.js, fixes #431

test/e2e/issues.ts

@@ -1,4 +1,4 @@
-import { Liquid } from '../../src/liquid'
+import { Liquid } from '../..'
 import { expect, use } from 'chai'
 import * as chaiAsPromised from 'chai-as-promised'
 import * as sinon from 'sinon'
@@ -153,4 +153,12 @@ describe('Issues', function () {
     expect(exists).to.be.calledOnce
     expect(readFile).to.be.calledOnce
   })
+  it('#431 Error when using Date timezoneOffset in 9.28.5', async () => {
+    const engine = new Liquid({
+      timezoneOffset: 0,
+      preserveTimezones: true
+    })
+    const tpl = engine.parse('Welcome to {{ now | date: "%Y-%m-%d" }}!')
+    expect(engine.render(tpl, { now: new Date('2019/02/01') })).to.eventually.equal('Welcome to 2019-02-01')
+  })
 })

test/integration/builtin/filters/date.ts

@@ -75,7 +75,7 @@ describe('filters/date', function () {
       const scope = { date: new Date('1990-12-31T23:00:00Z') }
       return test('{{ date | date: "%z"}}', scope, '-0600', opts)
     })
-    it('should ignore this setting when `preserveTimezones` also specified', function () {
+    it('should work with `preserveTimezones`', function () {
       const opts: LiquidOptions = { timezoneOffset: 600, preserveTimezones: true }
       return test('{{ "1990-12-31T23:00:00+02:30" | date: "%Y-%m-%dT%H:%M:%S"}}', '1990-12-31T23:00:00', undefined, opts)
     })