fix: updating the node-fetch target to handle form-urlencoded requests (#187)

* fix: updating the node-fetch target to handle form-urlencoded requests

* fix: supplying URLSearchParams directly to `node-fetch`

Co-authored-by: Opender Singh <opender.singh@konghq.com>

Author: erunion

src/targets/node/fetch.js

@@ -37,7 +37,15 @@ module.exports = function (source, options) {
 
   switch (source.postData.mimeType) {
     case 'application/x-www-form-urlencoded':
-      reqOpts.body = source.postData.paramsObj
+      code.unshift('const { URLSearchParams } = require(\'url\');')
+      code.push('const encodedParams = new URLSearchParams();')
+      code.blank()
+
+      source.postData.params.forEach(function (param) {
+        code.push('encodedParams.set(\'' + param.name + '\', \'' + param.value + '\');')
+      })
+
+      reqOpts.body = 'encodedParams'
       break
 
     case 'application/json':
@@ -49,15 +57,16 @@ module.exports = function (source, options) {
     case 'multipart/form-data':
       code.unshift('const FormData = require(\'form-data\');')
       code.push('const formData = new FormData();')
+      code.blank()
+
       source.postData.params.forEach(function (param) {
         if (!param.fileName && !param.fileName && !param.contentType) {
-          code.push('formData.append(\'' + param.name + '\',\'' + param.value + '\');')
+          code.push('formData.append(\'' + param.name + '\', \'' + param.value + '\');')
           return
         }
 
         if (param.fileName) {
           includeFS = true
-          code.blank()
           code.push('formData.append(\'' + param.name + '\', fs.createReadStream(\'' + param.fileName + '\'));')
         }
       })
@@ -100,7 +109,9 @@ module.exports = function (source, options) {
       .push(1, '.then(json => console.log(json))')
       .push(1, '.catch(err => console.error(\'error:\' + err));')
 
-  return code.join().replace(/"fs\.createReadStream\(\\"(.+)\\"\)"/, 'fs.createReadStream("$1")')
+  return code.join()
+    .replace(/'encodedParams'/, 'encodedParams')
+    .replace(/"fs\.createReadStream\(\\"(.+)\\"\)"/, 'fs.createReadStream("$1")')
 }
 
 module.exports.info = {

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

@@ -1,11 +1,16 @@
+const { URLSearchParams } = require('url');
 const fetch = require('node-fetch');
+const encodedParams = new URLSearchParams();
+
+encodedParams.set('foo', 'bar');
+encodedParams.set('hello', 'world');
 
 let url = 'http://mockbin.com/har';
 
 let options = {
   method: 'POST',
   headers: {'content-type': 'application/x-www-form-urlencoded'},
-  body: {foo: 'bar', hello: 'world'}
+  body: encodedParams
 };
 
 fetch(url, options)

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

@@ -1,4 +1,8 @@
+const { URLSearchParams } = require('url');
 const fetch = require('node-fetch');
+const encodedParams = new URLSearchParams();
+
+encodedParams.set('foo', 'bar');
 
 let url = 'http://mockbin.com/har';
 
@@ -10,7 +14,7 @@ let options = {
     'content-type': 'application/x-www-form-urlencoded',
     cookie: 'foo=bar; bar=baz; '
   },
-  body: {foo: 'bar'}
+  body: encodedParams
 };
 
 fetch(url, options)

test/fixtures/output/node/fetch/multipart-form-data.js

@@ -1,7 +1,8 @@
 const FormData = require('form-data');
 const fetch = require('node-fetch');
 const formData = new FormData();
-formData.append('foo','bar');
+
+formData.append('foo', 'bar');
 
 let url = 'http://mockbin.com/har';