feat(adapter): add fetch adapter; (#6371)

lib/helpers/AxiosTransformStream.js

@@ -65,19 +65,20 @@ class AxiosTransformStream extends stream.Transform{
 
       process.nextTick(() => {
         self.emit('progress', {
-          'loaded': bytesTransferred,
-          'total': totalBytes,
-          'progress': totalBytes ? (bytesTransferred / totalBytes) : undefined,
-          'bytes': progressBytes,
-          'rate': rate ? rate : undefined,
-          'estimated': rate && totalBytes && bytesTransferred <= totalBytes ?
-            (totalBytes - bytesTransferred) / rate : undefined
+          loaded: bytesTransferred,
+          total: totalBytes,
+          progress: totalBytes ? (bytesTransferred / totalBytes) : undefined,
+          bytes: progressBytes,
+          rate: rate ? rate : undefined,
+          estimated: rate && totalBytes && bytesTransferred <= totalBytes ?
+            (totalBytes - bytesTransferred) / rate : undefined,
+          lengthComputable: totalBytes != null
         });
       });
     }, internals.ticksRate);
 
     const onFinish = () => {
-      internals.updateProgress(true);
+      internals.updateProgress.call(true);
     };
 
     this.once('end', onFinish);

lib/helpers/composeSignals.js

@@ -0,0 +1,46 @@
+import CanceledError from "../cancel/CanceledError.js";
+import AxiosError from "../core/AxiosError.js";
+
+const composeSignals = (signals, timeout) => {
+  let controller = new AbortController();
+
+  let aborted;
+
+  const onabort = function (cancel) {
+    if (!aborted) {
+      aborted = true;
+      unsubscribe();
+      const err = cancel instanceof Error ? cancel : this.reason;
+      controller.abort(err instanceof AxiosError ? err : new CanceledError(err instanceof Error ? err.message : err));
+    }
+  }
+
+  let timer = timeout && setTimeout(() => {
+    onabort(new AxiosError(`timeout ${timeout} of ms exceeded`, AxiosError.ETIMEDOUT))
+  }, timeout)
+
+  const unsubscribe = () => {
+    if (signals) {
+      timer && clearTimeout(timer);
+      timer = null;
+      signals.forEach(signal => {
+        signal &&
+        (signal.removeEventListener ? signal.removeEventListener('abort', onabort) : signal.unsubscribe(onabort));
+      });
+      signals = null;
+    }
+  }
+
+  signals.forEach((signal) => signal && signal.addEventListener && signal.addEventListener('abort', onabort));
+
+  const {signal} = controller;
+
+  signal.unsubscribe = unsubscribe;
+
+  return [signal, () => {
+    timer && clearTimeout(timer);
+    timer = null;
+  }];
+}
+
+export default composeSignals;

lib/helpers/progressEventReducer.js

@@ -0,0 +1,32 @@
+import speedometer from "./speedometer.js";
+import throttle from "./throttle.js";
+
+export default (listener, isDownloadStream, freq = 3) => {
+  let bytesNotified = 0;
+  const _speedometer = speedometer(50, 250);
+
+  return throttle(e => {
+    const loaded = e.loaded;
+    const total = e.lengthComputable ? e.total : undefined;
+    const progressBytes = loaded - bytesNotified;
+    const rate = _speedometer(progressBytes);
+    const inRange = loaded <= total;
+
+    bytesNotified = loaded;
+
+    const data = {
+      loaded,
+      total,
+      progress: total ? (loaded / total) : undefined,
+      bytes: progressBytes,
+      rate: rate ? rate : undefined,
+      estimated: rate && total && inRange ? (total - loaded) / rate : undefined,
+      event: e,
+      lengthComputable: total != null
+    };
+
+    data[isDownloadStream ? 'download' : 'upload'] = true;
+
+    listener(data);
+  }, freq);
+}

lib/helpers/resolveConfig.js

@@ -0,0 +1,57 @@
+import platform from "../platform/index.js";
+import utils from "../utils.js";
+import isURLSameOrigin from "./isURLSameOrigin.js";
+import cookies from "./cookies.js";
+import buildFullPath from "../core/buildFullPath.js";
+import mergeConfig from "../core/mergeConfig.js";
+import AxiosHeaders from "../core/AxiosHeaders.js";
+import buildURL from "./buildURL.js";
+
+export default (config) => {
+  const newConfig = mergeConfig({}, config);
+
+  let {data, withXSRFToken, xsrfHeaderName, xsrfCookieName, headers, auth} = newConfig;
+
+  newConfig.headers = headers = AxiosHeaders.from(headers);
+
+  newConfig.url = buildURL(buildFullPath(newConfig.baseURL, newConfig.url), config.params, config.paramsSerializer);
+
+  // HTTP basic authentication
+  if (auth) {
+    headers.set('Authorization', 'Basic ' +
+      btoa((auth.username || '') + ':' + (auth.password ? unescape(encodeURIComponent(auth.password)) : ''))
+    );
+  }
+
+  let contentType;
+
+  if (utils.isFormData(data)) {
+    if (platform.hasStandardBrowserEnv || platform.hasStandardBrowserWebWorkerEnv) {
+      headers.setContentType(undefined); // Let the browser set it
+    } else if ((contentType = headers.getContentType()) !== false) {
+      // fix semicolon duplication issue for ReactNative FormData implementation
+      const [type, ...tokens] = contentType ? contentType.split(';').map(token => token.trim()).filter(Boolean) : [];
+      headers.setContentType([type || 'multipart/form-data', ...tokens].join('; '));
+    }
+  }
+
+  // Add xsrf header
+  // This is only done if running in a standard browser environment.
+  // Specifically not if we're in a web worker, or react-native.
+
+  if (platform.hasStandardBrowserEnv) {
+    withXSRFToken && utils.isFunction(withXSRFToken) && (withXSRFToken = withXSRFToken(newConfig));
+
+    if (withXSRFToken || (withXSRFToken !== false && isURLSameOrigin(newConfig.url))) {
+      // Add xsrf header
+      const xsrfValue = xsrfHeaderName && xsrfCookieName && cookies.read(xsrfCookieName);
+
+      if (xsrfValue) {
+        headers.set(xsrfHeaderName, xsrfValue);
+      }
+    }
+  }
+
+  return newConfig;
+}
+

lib/helpers/throttle.js

@@ -10,7 +10,9 @@ function throttle(fn, freq) {
   let timestamp = 0;
   const threshold = 1000 / freq;
   let timer = null;
-  return function throttled(force, args) {
+  return function throttled() {
+    const force = this === true;
+
     const now = Date.now();
     if (force || now - timestamp > threshold) {
       if (timer) {
@@ -18,13 +20,13 @@ function throttle(fn, freq) {
         timer = null;
       }
       timestamp = now;
-      return fn.apply(null, args);
+      return fn.apply(null, arguments);
     }
     if (!timer) {
       timer = setTimeout(() => {
         timer = null;
         timestamp = Date.now();
-        return fn.apply(null, args);
+        return fn.apply(null, arguments);
       }, threshold - (now - timestamp));
     }
   };

lib/helpers/trackStream.js

@@ -0,0 +1,56 @@
+
+export const streamChunk = function* (chunk, chunkSize) {
+  let len = chunk.byteLength;
+
+  if (!chunkSize || len < chunkSize) {
+    yield chunk;
+    return;
+  }
+
+  let pos = 0;
+  let end;
+
+  while (pos < len) {
+    end = pos + chunkSize;
+    yield chunk.slice(pos, end);
+    pos = end;
+  }
+}
+
+const encoder = new TextEncoder();
+
+export const readBytes = async function* (iterable, chunkSize) {
+  for await (const chunk of iterable) {
+    yield* streamChunk(ArrayBuffer.isView(chunk) ? chunk : (await encoder.encode(String(chunk))), chunkSize);
+  }
+}
+
+export const trackStream = (stream, chunkSize, onProgress, onFinish) => {
+  const iterator = readBytes(stream, chunkSize);
+
+  let bytes = 0;
+
+  return new ReadableStream({
+    type: 'bytes',
+
+    async pull(controller) {
+      const {done, value} = await iterator.next();
+
+      if (done) {
+        controller.close();
+        onFinish();
+        return;
+      }
+
+      let len = value.byteLength;
+      onProgress && onProgress(bytes += len);
+      controller.enqueue(new Uint8Array(value));
+    },
+    cancel(reason) {
+      onFinish(reason);
+      return iterator.return();
+    }
+  }, {
+    highWaterMark: 2
+  })
+}