refactor http request handlers (#179)

* Use web universal fetch handler and stream collector

Correspond to aws/aws-sdk-js-v3#1123

* move runtime-specific stream collectors to individual request handler package

Author: AllanZhengYP

smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/RuntimeConfigGenerator.java

@@ -66,9 +66,9 @@ final class RuntimeConfigGenerator {
                 writer.write("bodyLengthChecker: calculateBodyLength,");
             },
             "streamCollector", writer -> {
-                writer.addDependency(TypeScriptDependency.AWS_SDK_STREAM_COLLECTOR_NODE);
+                writer.addDependency(TypeScriptDependency.AWS_SDK_NODE_HTTP_HANDLER);
                 writer.addImport("streamCollector", "streamCollector",
-                        TypeScriptDependency.AWS_SDK_STREAM_COLLECTOR_NODE.packageName);
+                        TypeScriptDependency.AWS_SDK_NODE_HTTP_HANDLER.packageName);
                 writer.write("streamCollector,");
             },
             "base64Decoder", writer -> {
@@ -130,9 +130,9 @@ final class RuntimeConfigGenerator {
                 writer.write("bodyLengthChecker: calculateBodyLength,");
             },
             "streamCollector", writer -> {
-                writer.addDependency(TypeScriptDependency.AWS_SDK_STREAM_COLLECTOR_BROWSER);
+                writer.addDependency(TypeScriptDependency.AWS_SDK_FETCH_HTTP_HANDLER);
                 writer.addImport("streamCollector", "streamCollector",
-                        TypeScriptDependency.AWS_SDK_STREAM_COLLECTOR_BROWSER.packageName);
+                        TypeScriptDependency.AWS_SDK_FETCH_HTTP_HANDLER.packageName);
                 writer.write("streamCollector,");
             },
             "base64Decoder", writer -> {
@@ -169,12 +169,6 @@ final class RuntimeConfigGenerator {
             }
     );
     private final Map<String, Consumer<TypeScriptWriter>> reactNativeRuntimeConfigDefaults = MapUtils.of(
-            "requestHandler", writer -> {
-                writer.addDependency(TypeScriptDependency.AWS_SDK_FETCH_HTTP_HANDLER);
-                writer.addImport("FetchHttpHandler", "FetchHttpHandler",
-                        TypeScriptDependency.AWS_SDK_FETCH_HTTP_HANDLER.packageName);
-                writer.write("requestHandler: new FetchHttpHandler({ bufferBody: true }),");
-            },
             "sha256", writer -> {
                 writer.addDependency(TypeScriptDependency.AWS_CRYPTO_SHA256_JS);
                 writer.addImport("Sha256", "Sha256",
@@ -187,12 +181,6 @@ final class RuntimeConfigGenerator {
                         TypeScriptDependency.AWS_SDK_URL_PARSER_NODE.packageName);
                 writer.write("urlParser: parseUrl,");
             },
-            "streamCollector", writer -> {
-                writer.addDependency(TypeScriptDependency.AWS_SDK_STREAM_COLLECTOR_RN);
-                writer.addImport("streamCollector", "streamCollector",
-                        TypeScriptDependency.AWS_SDK_STREAM_COLLECTOR_RN.packageName);
-                writer.write("streamCollector,");
-            },
             "defaultUserAgent", writer -> {
                 writer.addImport("name", "name", "./package.json");
                 writer.addImport("version", "version", "./package.json");

smithy-typescript-codegen/src/main/java/software/amazon/smithy/typescript/codegen/TypeScriptDependency.java

@@ -45,10 +45,6 @@ public enum TypeScriptDependency implements SymbolDependencyContainer {
     AWS_CRYPTO_SHA256_JS("dependencies", "@aws-crypto/sha256-js", "^1.0.0-alpha.0", true),
     AWS_SDK_HASH_NODE("dependencies", "@aws-sdk/hash-node", "^1.0.0-beta.0", true),
 
-    AWS_SDK_STREAM_COLLECTOR_NODE("dependencies", "@aws-sdk/stream-collector-node", "^1.0.0-beta.0", true),
-    AWS_SDK_STREAM_COLLECTOR_BROWSER("dependencies", "@aws-sdk/stream-collector-browser", "^1.0.0-beta.0", true),
-    AWS_SDK_STREAM_COLLECTOR_RN("dependencies", "@aws-sdk/stream-collector-native", "^1.0.0-beta.0", true),
-
     AWS_SDK_URL_PARSER_BROWSER("dependencies", "@aws-sdk/url-parser-browser", "^1.0.0-beta.0", true),
     AWS_SDK_URL_PARSER_NODE("dependencies", "@aws-sdk/url-parser-node", "^1.0.0-beta.0", true),