perf: add cross-engines benchmark

src/builtin/filters/string.ts

@@ -7,12 +7,12 @@ import { stringify } from '../../util/underscore'
 import { assert } from '../../util/assert'
 
 export function append (v: string, arg: string) {
-  assert(arg !== undefined, () => 'append expect 2 arguments')
+  assert(arguments.length === 2, () => 'append expect 2 arguments')
   return stringify(v) + stringify(arg)
 }
 
 export function prepend (v: string, arg: string) {
-  assert(arg !== undefined, () => 'prepend expect 2 arguments')
+  assert(arguments.length === 2, () => 'prepend expect 2 arguments')
   return stringify(arg) + stringify(v)
 }
 

src/builtin/tags/include.ts

@@ -24,6 +24,7 @@ export default {
   render: function * (ctx: Context, emitter: Emitter) {
     const { liquid, hash, withVar, file } = this
     const { renderer } = liquid
+    // TODO try move all liquid.parse calls into parse() section
     const filepath = ctx.opts.dynamicPartials
       ? (TypeGuards.isQuotedToken(file)
         ? yield renderer.renderTemplates(liquid.parse(evalQuotedToken(file)), ctx)