fix: pass drops directly to filters/tags

src/builtin/filters/object.ts

@@ -1,5 +1,8 @@
 import { isFalsy } from '../../render/syntax'
+import { toValue } from '../../util/underscore'
 
 export default {
-  'default': <T1, T2>(v: string | T1, arg: T2): string | T1 | T2 => isFalsy(v) || v === '' ? arg : v
+  'default': function<T1, T2> (v: string | T1, arg: T2): string | T1 | T2 {
+    return isFalsy(toValue(v)) || v === '' ? arg : v
+  }
 }

src/builtin/tags/for.ts

@@ -1,5 +1,5 @@
 import { isString, isObject, isArray } from '../../util/underscore'
-import { evalExp } from '../../render/syntax'
+import { parseExp } from '../../render/syntax'
 import assert from '../../util/assert'
 import { identifier, value, hash } from '../../parser/lexical'
 import TagToken from '../../parser/tag-token'
@@ -42,7 +42,7 @@ export default <ITagImplOptions>{
     stream.start()
   },
   render: async function (ctx: Context, hash: Hash) {
-    let collection = await evalExp(this.collection, ctx)
+    let collection = await parseExp(this.collection, ctx)
 
     if (!isArray(collection)) {
       if (isString(collection) && collection.length > 0) {

src/builtin/tags/include.ts

@@ -1,6 +1,6 @@
 import assert from '../../util/assert'
 import { value, quotedLine } from '../../parser/lexical'
-import { evalValue } from '../../render/syntax'
+import { evalValue, parseValue } from '../../render/syntax'
 import BlockMode from '../../context/block-mode'
 import TagToken from '../../parser/tag-token'
 import Context from '../../context/context'
@@ -13,19 +13,13 @@ const withRE = new RegExp(`with\\s+(${value.source})`)
 export default <ITagImplOptions>{
   parse: function (token: TagToken) {
     let match = staticFileRE.exec(token.args)
-    if (match) {
-      this.staticValue = match[0]
-    }
+    if (match) this.staticValue = match[0]
 
     match = value.exec(token.args)
-    if (match) {
-      this.value = match[0]
-    }
+    if (match) this.value = match[0]
 
     match = withRE.exec(token.args)
-    if (match) {
-      this.with = match[1]
-    }
+    if (match) this.with = match[1]
   },
   render: async function (ctx: Context, hash: Hash) {
     let filepath
@@ -47,7 +41,7 @@ export default <ITagImplOptions>{
     ctx.setRegister('blocks', {})
     ctx.setRegister('blockMode', BlockMode.OUTPUT)
     if (this.with) {
-      hash[filepath] = await evalValue(this.with, ctx)
+      hash[filepath] = await parseValue(this.with, ctx)
     }
     const templates = await this.liquid.getTemplate(filepath, ctx.opts)
     ctx.push(hash)