feat(globals): add couple of globals

src/Edge/index.js

@@ -24,7 +24,7 @@ const ExistingTags = require('../Tags')
 class Edge {
   constructor () {
     this._tags = {}
-    this._globals = {}
+    this._globals = require('../Globals')
     this._loader = new Loader()
     this._boot()
   }

src/Globals/index.js

@@ -0,0 +1,50 @@
+'use strict'
+
+/*
+ * edge
+ *
+ * (c) Harminder Virk <virk@adonisjs.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+*/
+
+const _ = require('lodash')
+
+const range = function (start, end) {
+  return _.range(start, end)
+}
+
+const batch = function (input, size) {
+  return _.chunk(input, size)
+}
+
+const toJSON = function (input, indent = 2) {
+  return JSON.stringify(input, null, indent)
+}
+
+const first = function (collection) {
+  return _.first(collection)
+}
+
+const last = function (collection) {
+  return _.last(collection)
+}
+
+const groupBy = function (collection, field) {
+  return _.groupBy(collection, field)
+}
+
+const size = function (input) {
+  return _.size(input)
+}
+
+module.exports = {
+  range,
+  batch,
+  toJSON,
+  first,
+  last,
+  groupBy,
+  size
+}

test/unit/edge.spec.js

@@ -14,6 +14,7 @@ const test = require('japa')
 const dedent = require('dedent-js')
 const Edge = require('../../src/Edge')
 const Presenter = require('../../src/Presenter')
+const Globals = require('../../src/Globals')
 
 test.group('Edge', (group) => {
   group.before(() => {
@@ -30,6 +31,11 @@ test.group('Edge', (group) => {
     assert.deepEqual(Object.keys(this.tags), Object.keys(edge._tags))
   })
 
+  test('should register all inbuilt globals', (assert) => {
+    const edge = new Edge()
+    assert.deepEqual(Object.keys(Globals), Object.keys(edge._globals))
+  })
+
   test('throw exception when a tag does not have a tagName', (assert) => {
     const edge = new Edge()
     class DummyTag {}
@@ -268,4 +274,10 @@ test.group('Edge', (group) => {
     assert.equal(output.trim(), `virk
   nikk`)
   })
+
+  test('should have access to inbuilt globals', (assert) => {
+    const edge = new Edge()
+    const statement = `{{ size('foo') }}`
+    assert.equal(edge.renderString(statement).trim(), '3')
+  })
 })