docs: fix demos

demo/nodejs/index.js

@@ -10,7 +10,7 @@ engine.registerTag('header', {
     const [key, val] = token.args.split(':')
     this[key] = val
   },
-  render: async function (scope, hash, emitter) {
+  render: async function (scope, emitter) {
     const title = await this.liquid.evalValue(this.content, scope)
     emitter.write(`<h1>${title}</h1>`)
   }

demo/reactjs/package.json

@@ -21,5 +21,8 @@
     "not dead",
     "not ie <= 11",
     "not op_mini all"
-  ]
+  ],
+  "devDependencies": {
+    "@babel/core": "^7.8.7"
+  }
 }

demo/typescript/index.ts

@@ -1,4 +1,4 @@
-import { Liquid, TagToken, Hash, Context, Emitter } from 'liquidjs'
+import { Liquid, TagToken, Context, Emitter } from 'liquidjs'
 
 const engine = new Liquid({
   root: __dirname,
@@ -10,7 +10,7 @@ engine.registerTag('header', {
     const [key, val] = token.args.split(':')
     this[key] = val
   },
-  render: async function (context: Context, hash: Hash, emitter: Emitter) {
+  render: async function (context: Context, emitter: Emitter) {
     const title = await this.liquid.evalValue(this['content'], context)
     emitter.write(`<h1>${title}</h1>`)
   }