fix(hasOne): Issues with eval

add(polyfills): Array includes polyfill

src/array-includes.ts

@@ -0,0 +1,55 @@
+if (!(Array.prototype as any).includes) {
+    Object.defineProperty(Array.prototype, 'includes', {
+        value: function(searchElement, fromIndex) {
+            // 1. Let O be ? ToObject(this value).
+            if (this == null) {
+                throw new TypeError('"this" is null or not defined')
+            }
+
+            const o = Object(this)
+
+            // 2. Let len be ? ToLength(? Get(O, "length")).
+            const len = o.length >>> 0
+
+            // 3. If len is 0, return false.
+            if (len === 0) {
+                return false
+            }
+
+            // 4. Let n be ? ToInteger(fromIndex).
+            //    (If fromIndex is undefined, this step produces the value 0.)
+            const n = fromIndex | 0
+
+            // 5. If n ≥ 0, then
+            //  a. Let k be n.
+            // 6. Else n < 0,
+            //  a. Let k be len + n.
+            //  b. If k < 0, let k be 0.
+            let k = Math.max(n >= 0 ? n : len - Math.abs(n), 0)
+
+            function sameValueZero(x, y) {
+                return (
+                    x === y ||
+                    (typeof x === 'number' &&
+                        typeof y === 'number' &&
+                        isNaN(x) &&
+                        isNaN(y))
+                )
+            }
+
+            // 7. Repeat, while k < len
+            while (k < len) {
+                // a. Let elementK be the result of ? Get(O, ! ToString(k)).
+                // b. If SameValueZero(searchElement, elementK) is true, return true.
+                // c. Increase k by 1.
+                if (sameValueZero(o[k], searchElement)) {
+                    return true
+                }
+                k++
+            }
+
+            // 8. Return false
+            return false
+        }
+    })
+}

src/index.ts

@@ -1,3 +1,5 @@
+import './array-includes'
+
 import { Mocker } from './lib/Mocker'
 export * from './lib/Mocker'
 export * from './lib/Schema'

src/lib/tests/Generator.hasOne.spec.ts

@@ -97,7 +97,19 @@ test('Should get one of the DB', async t => {
     t.true(set1.indexOf(res) > -1)
 })
 
-test('Should get one of the DB, and one field of that entity', async t => {
+test('Should get one of the DB, and one field of that entity (eval)', async t => {
+    gen.DB = {
+        hello: set1
+    }
+
+    let res = gen.hasOne({ hasOne: 'hello', get: 'id', eval: true })
+    t.true(res !== undefined)
+    t.true(res !== null)
+    t.true(res <= 10)
+    t.true(res >= 0)
+})
+
+test('Should get one of the DB, and one field of that entity (no-eval)', async t => {
     gen.DB = {
         hello: set1
     }

src/lib/utils.ts

@@ -153,7 +153,9 @@ export const fnParser = function(name, fn, cfg) {
     let [args2, mods] = args.split(')')
 
     args = args2
-        ? args2[0] === '{' ? [JSON.parse(args2)] : args2.split(',')
+        ? args2[0] === '{'
+            ? [JSON.parse(args2)]
+            : args2.split(',')
         : []
 
     let result = func.call(this, ...args)
@@ -179,7 +181,7 @@ export const fnParser = function(name, fn, cfg) {
 export const loopInside = function(object: any, path: string) {
     let p = path.split('.')
     return p.reduce((acc, val) => {
-        if (!acc[val]) {
+        if (acc[val] === null) {
             throw `'${acc}' doesnt have key '${val}'.`
         }
         return acc[val]