feat: more flexible squared property read expression, fixes #643 (#646)

* fix: more flexible squared property read expression, fixes #643

* fix: unecessary error wrapping in browser bundles

* style: update code style and types

* perf: use token.value when evalToken

test/e2e/browser.spec.ts

@@ -7,4 +7,18 @@ describe('browser', function () {
       message: 'output "{{huh" not closed, line:1, col:1'
     })
   })
+  it('should throw tokenization error for invalid filter syntax', async () => {
+    const engine = new LiquidUMD()
+    const message = 'expected filter name, line:1, col:10'
+    const stack = [
+      '>> 1| {{ foo | ^ }}',
+      '               ^',
+      `TokenizationError: ${message}`
+    ].join('\n')
+    await expect(engine.parseAndRender('{{ foo | ^ }}')).rejects.toMatchObject({
+      message,
+      stack: expect.stringContaining(stack),
+      name: 'TokenizationError'
+    })
+  })
 })

test/e2e/issues.spec.ts

@@ -454,4 +454,14 @@ describe('Issues', function () {
     const result = engine.parseAndRenderSync(template, { product })
     expect(result).toEqual('This is a love potion!')
   })
+  it('#643 Error When Accessing Subproperty of Bracketed Reference', () => {
+    const engine = new Liquid()
+    const tpl = '{{ ["Key String with Spaces"].subpropertyKey }}'
+    const ctx = {
+      'Key String with Spaces': {
+        subpropertyKey: 'FOO'
+      }
+    }
+    expect(engine.parseAndRenderSync(tpl, ctx)).toEqual('FOO')
+  })
 })