fix: sort filter unexpectedly modifies original array, #475

src/builtin/filters/array.ts

@@ -12,7 +12,7 @@ export const reverse = (v: any[]) => [...v].reverse()
 
 export function sort<T> (this: FilterImpl, arr: T[], property?: string) {
   const getValue = (obj: Scope) => property ? this.context.getFromScope(obj, property.split('.')) : obj
-  return toArray(arr).sort((lhs, rhs) => {
+  return [...toArray(arr)].sort((lhs, rhs) => {
     lhs = getValue(lhs)
     rhs = getValue(rhs)
     return lhs < rhs ? -1 : (lhs > rhs ? 1 : 0)

src/template/output.ts

@@ -12,7 +12,7 @@ export class Output extends TemplateImpl<OutputToken> implements Template {
     super(token)
     this.value = new Value(token.content, liquid)
   }
-  public * render (ctx: Context, emitter: Emitter): Generator<unknown, void, unknown> {
+  public * render (ctx: Context, emitter: Emitter): IterableIterator<unknown> {
     const val = yield this.value.value(ctx, false)
     emitter.write(val)
   }