refactor: remove unused lexical regexps

src/template/tag/block-tag.ts

@@ -1,45 +0,0 @@
-import { create, stringify } from 'src/util/underscore'
-import assert from 'src/util/assert'
-import Scope from 'src/scope/scope'
-import ITagImpl from './itag-impl'
-import ITagImplOptions from './itag-impl-options'
-import Liquid from 'src/liquid'
-import Hash from './hash'
-import Template from 'src/template/template'
-import ITemplate from 'src/template/itemplate'
-import TagToken from 'src/parser/tag-token'
-import Token from 'src/parser/token'
-
-export default class Tag extends Template<TagToken> implements ITemplate {
-  name: string
-  private impl: ITagImpl
-  static impls: { [key: string]: ITagImplOptions } = {}
-
-  constructor (token: TagToken, tokens: Token[], liquid: Liquid) {
-    super(token)
-    this.name = token.name
-
-    const impl = Tag.impls[token.name]
-    assert(impl, `tag ${token.name} not found`)
-    this.impl = create<ITagImplOptions, ITagImpl>(impl)
-    this.impl.liquid = liquid
-    if (this.impl.parse) {
-      this.impl.parse(token, tokens)
-    }
-  }
-  async render (scope: Scope) {
-    const hash = new Hash(this.token.args, scope)
-    const impl = this.impl
-    if (typeof impl.render !== 'function') {
-      return ''
-    }
-    const html = await impl.render(scope, hash)
-    return stringify(html)
-  }
-  static register (name: string, tag: ITagImplOptions) {
-    Tag.impls[name] = tag
-  }
-  static clear () {
-    Tag.impls = {}
-  }
-}