fixes #88

src/lexical.js

@@ -9,7 +9,7 @@ export const integer = /-?\d+/
 export const number = /-?\d+\.?\d*|\.?\d+/
 export const bool = /true|false/
 
-// peoperty access
+// property access
 export const identifier = /[\w-]+[?]?/
 export const subscript = new RegExp(`\\[(?:${quoted.source}|[\\w-\\.]+)\\]`)
 export const literal = new RegExp(`(?:${quoted.source}|${bool.source}|${number.source})`)

src/scope.js

@@ -109,7 +109,7 @@ const Scope = {
             assert(j !== -1, `unbalanced []: ${str}`)
             name = str.slice(i + 1, j)
             if (!lexical.isInteger(name)) { // foo[bar] vs. foo[1]
-              name = this.get(name)
+              name = String(this.get(name))
             }
             push()
             i = j + 1

test/unit/scope.js

@@ -8,6 +8,7 @@ describe('scope', function () {
   beforeEach(function () {
     ctx = {
       foo: 'zoo',
+      one: 1,
       bar: {
         zoo: 'coo',
         'Mr.Smith': 'John',
@@ -46,6 +47,14 @@ describe('scope', function () {
       expect(scope.propertyAccessSeq('foo[0].bar'))
         .to.deep.equal(['foo', '0', 'bar'])
     })
+    it('should handle nested access 5', function () {
+      expect(scope.propertyAccessSeq('foo[one].bar'))
+        .to.deep.equal(['foo', '1', 'bar'])
+    })
+    it('should handle nested access 6', function () {
+      expect(scope.propertyAccessSeq('foo[two].bar'))
+        .to.deep.equal(['foo', 'undefined', 'bar'])
+    })
   })
 
   describe('#get()', function () {