update javascript fetch request to match node-fetch (#210)

* update javascript fetch request to match node-fetch

Vanilla JS did not return the json from the request, the node.js version does, now they should behave the same

* update test

Author: jonasholbech

src/targets/javascript/fetch.js

@@ -65,6 +65,7 @@ module.exports = function (source, options) {
 
   code
     .push(`fetch("${source.fullUrl}", ${JSON.stringify(options, null, opts.indent)})`)
+    .push('.then(response => response.json())')
     .push('.then(response => {')
     .push(1, 'console.log(response);')
     .push('})')

test/fixtures/output/javascript/fetch/application-form-encoded.js

@@ -8,6 +8,7 @@ fetch("http://mockbin.com/har", {
     "hello": "world"
   }
 })
+.then(response => response.json())
 .then(response => {
   console.log(response);
 })

test/fixtures/output/javascript/fetch/application-json.js

@@ -5,6 +5,7 @@ fetch("http://mockbin.com/har", {
   },
   "body": "{\"number\":1,\"string\":\"f\\\"oo\",\"arr\":[1,2,3],\"nested\":{\"a\":\"b\"},\"arr_mix\":[1,\"a\",{\"arr_mix_nested\":{}}],\"boolean\":false}"
 })
+.then(response => response.json())
 .then(response => {
   console.log(response);
 })

test/fixtures/output/javascript/fetch/cookies.js

@@ -4,6 +4,7 @@ fetch("http://mockbin.com/har", {
     "cookie": "foo=bar; bar=baz"
   }
 })
+.then(response => response.json())
 .then(response => {
   console.log(response);
 })

test/fixtures/output/javascript/fetch/custom-method.js

@@ -2,6 +2,7 @@ fetch("http://mockbin.com/har", {
   "method": "PROPFIND",
   "headers": {}
 })
+.then(response => response.json())
 .then(response => {
   console.log(response);
 })

test/fixtures/output/javascript/fetch/full.js

@@ -9,6 +9,7 @@ fetch("http://mockbin.com/har?foo=bar&foo=baz&baz=abc&key=value", {
     "foo": "bar"
   }
 })
+.then(response => response.json())
 .then(response => {
   console.log(response);
 })

test/fixtures/output/javascript/fetch/headers.js

@@ -5,6 +5,7 @@ fetch("http://mockbin.com/har", {
     "x-foo": "Bar"
   }
 })
+.then(response => response.json())
 .then(response => {
   console.log(response);
 })

test/fixtures/output/javascript/fetch/https.js

@@ -2,6 +2,7 @@ fetch("https://mockbin.com/har", {
   "method": "GET",
   "headers": {}
 })
+.then(response => response.json())
 .then(response => {
   console.log(response);
 })

test/fixtures/output/javascript/fetch/jsonObj-multiline.js

@@ -5,6 +5,7 @@ fetch("http://mockbin.com/har", {
   },
   "body": "{\"foo\":\"bar\"}"
 })
+.then(response => response.json())
 .then(response => {
   console.log(response);
 })

test/fixtures/output/javascript/fetch/jsonObj-null-value.js

@@ -5,6 +5,7 @@ fetch("http://mockbin.com/har", {
   },
   "body": "{\"foo\":null}"
 })
+.then(response => response.json())
 .then(response => {
   console.log(response);
 })