first commit 🎉

.editorconfig

@@ -0,0 +1,5 @@
+root = true
+
+[*]
+indent_style = space
+indent_size = 2

.gitignore

@@ -0,0 +1,5 @@
+pids
+logs
+npm-debug.log
+node_modules
+.vscode

README.md

@@ -0,0 +1,20 @@
+# sketch-module-fetch-polyfill
+
+A [fetch](https://developer.mozilla.org/en/docs/Web/API/Fetch_API) polyfill for sketch inspired by [unfetch](https://github.com/developit/unfetch).
+
+## Installation
+
+```bash
+npm i -S sketch-module-fetch-polyfill
+```
+
+## Usage
+
+```js
+import fetch from 'sketch-module-fetch-polyfill'
+
+fetch("https://google.com")
+  .then(response => response.text())
+  .then(text => console.log(text))
+  .catch(e => console.error(e))
+```

lib/index.js

@@ -0,0 +1,110 @@
+/* globals NSHTTPURLResponse NSString NSASCIIStringEncoding MOPointer NSJSONSerialization coscript NSURL NSMutableURLRequest NSMutableData NSURLConnection */
+var MochaJSDelegate = require('mocha-js-delegate')
+
+function response (httpResponse, data) {
+  const keys = []
+  const all = []
+  const headers = {}
+  let header
+
+  for (var i = 0; i < httpResponse.allHeaderFields().allKeys().length; i++) {
+    const key = httpResponse.allHeaderFields().allKeys()[i].toLowerCase()
+    const value = httpResponse.allHeaderFields()[key]
+    keys.push(key)
+    all.push([key, value])
+    header = headers[key]
+    headers[key] = header ? `${header},${value}` : value
+  }
+
+  return {
+    ok: (httpResponse.statusCode() / 200 | 0) == 1, // 200-399
+    status: httpResponse.statusCode(),
+    statusText: NSHTTPURLResponse.localizedStringForStatusCode(httpResponse.statusCode()),
+    url: httpResponse.URL(),
+    clone: response.bind(this, httpResponse, data),
+    text () {
+      return new Promise((resolve, reject) => {
+        const str = NSString.alloc().initWithData_encoding(data, NSASCIIStringEncoding)
+        if (str) {
+          resolve(str)
+        } else {
+          reject(new Error("Couldn't parse body"))
+        }
+      })
+    },
+    json () {
+      return new Promise((resolve, reject) => {
+        const err = MOPointer.alloc().initWithValue(null)
+        const obj = NSJSONSerialization.JSONObjectWithData_options_error(data, 0, err)
+        if (obj) {
+          resolve(obj)
+        } else {
+          reject(err.value())
+        }
+      })
+    },
+    xml () {
+      // TODO https://developer.apple.com/reference/foundation/nsxmlparser
+      return Promise.reject('not implemented yet')
+    },
+    blob () {
+      return Promise.resolve(data)
+    },
+    headers: {
+      keys: () => keys,
+      entries: () => all,
+      get: n => headers[n.toLowerCase()],
+      has: n => n.toLowerCase() in headers
+    }
+  }
+}
+
+function fetch (urlString, options) {
+  options = options || {}
+  coscript.setShouldKeepAround(true)
+  return new Promise((resolve, reject) => {
+    const url = NSURL.alloc().initWithString_(urlString)
+    const request = NSMutableURLRequest.requestWithURL_(url)
+    request.setHTTPMethod(options.method || 'GET')
+
+    for (let i in options.headers) {
+      request.setValue_forHTTPHeaderField(options.headers[i], i)
+    }
+
+    if (options.body) {
+      request.setHTTPBody(data)
+    }
+
+    const data = NSMutableData.alloc().init()
+    let httpResponse
+
+    const connectionDelegate = new MochaJSDelegate({
+      'connectionDidFinishLoading:' (connection) {
+        coscript.setShouldKeepAround(false)
+        return resolve(response(httpResponse, data))
+      },
+      'connection:didReceiveResponse:' (connection, _httpResponse) {
+        httpResponse = _httpResponse
+      },
+      'connection:didFailWithError:' (connection, error) {
+        coscript.setShouldKeepAround(false)
+        return reject(error)
+      },
+      'connection:didReceiveData:' (connection, _data) {
+        data.appendData(_data)
+      }
+    })
+
+    NSURLConnection.alloc().initWithRequest_delegate_startImmediately(request, connectionDelegate.getClassInstance(), true)
+  })
+}
+
+
+// polyfill the global object
+const commonjsGlobal = typeof global !== 'undefined'
+  ? global
+  : this
+
+commonjsGlobal.fetch = commonjsGlobal.fetch || fetch
+
+module.exports = fetch

package.json

@@ -0,0 +1,31 @@
+{
+  "name": "sketch-module-fetch-polyfill",
+  "version": "0.1.0",
+  "description": "A fetch polyfill for sketch",
+  "main": "lib/index.js",
+  "dependencies": {
+    "mocha-js-delegate": "^0.1.1"
+  },
+  "devDependencies": {
+    "standard": "^8.6.0"
+  },
+  "scripts": {
+    "test": "standard"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/mathieudutour/sketch-module-fetch-polyfill.git"
+  },
+  "keywords": [
+    "sketch",
+    "module",
+    "fetch",
+    "polyfill"
+  ],
+  "author": "Mathieu Dutour <mathieu@dutour.me> (http://mathieu.dutour.me/)",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/mathieudutour/sketch-module-fetch-polyfill/issues"
+  },
+  "homepage": "https://github.com/mathieudutour/sketch-module-fetch-polyfill#readme"
+}