Adding node-fetch target (#180)

@hirenoble is the original author (#154).
I've just resolve conflicts and fix tests that were failing.

@develohpanda noticed that JSON body should be stringified (https://github.com/node-fetch/node-fetch#post-with-json)
And looking at fetch options (https://github.com/node-fetch/node-fetch#fetch-options) I noticed that `json` attribute does not exist, so I've removed it.

Co-authored-by: Julien Giovaresco <dev@giovaresco.fr>

Author: 2 people

src/targets/node/fetch.js

@@ -0,0 +1,111 @@
+/**
+ * @description
+ * HTTP code snippet generator for Node.js using node-fetch.
+ *
+ * @author
+ * @hirenoble
+ *
+ * for any questions or issues regarding the generated code snippet, please open an issue mentioning the author.
+ */
+
+'use strict'
+
+var stringifyObject = require('stringify-object')
+var CodeBuilder = require('../../helpers/code-builder')
+
+module.exports = function (source, options) {
+  var opts = Object.assign({
+    indent: '  '
+  }, options)
+
+  var includeFS = false
+  var code = new CodeBuilder(opts.indent)
+
+  code.push('const fetch = require(\'node-fetch\');')
+  var url = source.url
+  var reqOpts = {
+    method: source.method
+  }
+
+  if (Object.keys(source.queryObj).length) {
+    reqOpts.qs = source.queryObj
+  }
+
+  if (Object.keys(source.headersObj).length) {
+    reqOpts.headers = source.headersObj
+  }
+
+  switch (source.postData.mimeType) {
+    case 'application/x-www-form-urlencoded':
+      reqOpts.body = source.postData.paramsObj
+      break
+
+    case 'application/json':
+      if (source.postData.jsonObj) {
+        reqOpts.body = JSON.stringify(source.postData.jsonObj)
+      }
+      break
+
+    case 'multipart/form-data':
+      code.unshift('const FormData = require(\'form-data\');')
+      code.push('const formData = new FormData();')
+      source.postData.params.forEach(function (param) {
+        if (!param.fileName && !param.fileName && !param.contentType) {
+          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 + '\'));')
+        }
+      })
+      break
+
+    default:
+      if (source.postData.text) {
+        reqOpts.body = source.postData.text
+      }
+  }
+
+  // construct cookies argument
+  if (source.cookies.length) {
+    var cookies = ''
+    source.cookies.forEach(function (cookie) {
+      cookies = cookies + encodeURIComponent(cookie.name) + '=' + encodeURIComponent(cookie.value) + '; '
+    })
+    if (reqOpts.headers) {
+      reqOpts.headers.cookie = cookies
+    } else {
+      reqOpts.headers = {}
+      reqOpts.headers.cookie = cookies
+    }
+  }
+  code.blank()
+  code.push('let url = \'' + url + '\';')
+    .blank()
+  code.push('let options = %s;', stringifyObject(reqOpts, { indent: '  ', inlineCharacterLimit: 80 }))
+    .blank()
+
+  if (includeFS) {
+    code.unshift('const fs = require(\'fs\');')
+  }
+  if (source.postData.mimeType === 'multipart/form-data') {
+    code.push('options.body = formData;')
+      .blank()
+  }
+  code.push('fetch(url, options)')
+      .push(1, '.then(res => res.json())')
+      .push(1, '.then(json => console.log(json))')
+      .push(1, '.catch(err => console.error(\'error:\' + err));')
+
+  return code.join().replace(/"fs\.createReadStream\(\\"(.+)\\"\)"/, 'fs.createReadStream("$1")')
+}
+
+module.exports.info = {
+  key: 'fetch',
+  title: 'Fetch',
+  link: 'https://github.com/bitinn/node-fetch',
+  description: 'Simplified HTTP node-fetch client'
+}

src/targets/node/index.js

@@ -11,5 +11,6 @@ module.exports = {
   native: require('./native'),
   request: require('./request'),
   unirest: require('./unirest'),
-  axios: require('./axios')
+  axios: require('./axios'),
+  fetch: require('./fetch')
 }

test/fixtures/available-targets.json

@@ -54,6 +54,12 @@
         "title": "Axios",
         "link": "https://github.com/axios/axios",
         "description": "Promise based HTTP client for the browser and node.js"
+      },
+      {
+        "key": "fetch",
+        "title": "Fetch",
+        "link": "https://github.com/bitinn/node-fetch",
+        "description": "Simplified HTTP node-fetch client"
       }
     ]
   },

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

@@ -0,0 +1,14 @@
+const fetch = require('node-fetch');
+
+let url = 'http://mockbin.com/har';
+
+let options = {
+  method: 'POST',
+  headers: {'content-type': 'application/x-www-form-urlencoded'},
+  body: {foo: 'bar', hello: 'world'}
+};
+
+fetch(url, options)
+  .then(res => res.json())
+  .then(json => console.log(json))
+  .catch(err => console.error('error:' + err));

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

@@ -0,0 +1,14 @@
+const fetch = require('node-fetch');
+
+let url = 'http://mockbin.com/har';
+
+let options = {
+  method: 'POST',
+  headers: {'content-type': 'application/json'},
+  body: '{"number":1,"string":"f\"oo","arr":[1,2,3],"nested":{"a":"b"},"arr_mix":[1,"a",{"arr_mix_nested":{}}],"boolean":false}'
+};
+
+fetch(url, options)
+  .then(res => res.json())
+  .then(json => console.log(json))
+  .catch(err => console.error('error:' + err));

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

@@ -0,0 +1,10 @@
+const fetch = require('node-fetch');
+
+let url = 'http://mockbin.com/har';
+
+let options = {method: 'POST', headers: {cookie: 'foo=bar; bar=baz; '}};
+
+fetch(url, options)
+  .then(res => res.json())
+  .then(json => console.log(json))
+  .catch(err => console.error('error:' + err));

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

@@ -0,0 +1,10 @@
+const fetch = require('node-fetch');
+
+let url = 'http://mockbin.com/har';
+
+let options = {method: 'PROPFIND'};
+
+fetch(url, options)
+  .then(res => res.json())
+  .then(json => console.log(json))
+  .catch(err => console.error('error:' + err));

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

@@ -0,0 +1,19 @@
+const fetch = require('node-fetch');
+
+let url = 'http://mockbin.com/har';
+
+let options = {
+  method: 'POST',
+  qs: {foo: ['bar', 'baz'], baz: 'abc', key: 'value'},
+  headers: {
+    accept: 'application/json',
+    'content-type': 'application/x-www-form-urlencoded',
+    cookie: 'foo=bar; bar=baz; '
+  },
+  body: {foo: 'bar'}
+};
+
+fetch(url, options)
+  .then(res => res.json())
+  .then(json => console.log(json))
+  .catch(err => console.error('error:' + err));

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

@@ -0,0 +1,10 @@
+const fetch = require('node-fetch');
+
+let url = 'http://mockbin.com/har';
+
+let options = {method: 'GET', headers: {accept: 'application/json', 'x-foo': 'Bar'}};
+
+fetch(url, options)
+  .then(res => res.json())
+  .then(json => console.log(json))
+  .catch(err => console.error('error:' + err));

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

@@ -0,0 +1,10 @@
+const fetch = require('node-fetch');
+
+let url = 'https://mockbin.com/har';
+
+let options = {method: 'GET'};
+
+fetch(url, options)
+  .then(res => res.json())
+  .then(json => console.log(json))
+  .catch(err => console.error('error:' + err));