regenerator - npm Package Compare versions

Comparing version 0.6.0 to 0.6.1

lib/visit.js

@@ -24,2 +24,3 @@ /**
 var runtimeValuesMethod = runtimeProperty("values");
+var runtimeAsyncMethod = runtimeProperty("async");
 
@@ -37,3 +38,3 @@ exports.transform = function(node) {
 
-    if (!node.generator) {
+    if (!node.generator && !node.async) {
       return;
@@ -52,5 +53,10 @@ }
 
+    if (node.async) {
+      awaitVisitor.visit(path.get("body"));
+    }
+
     var outerFnId = node.id || (
       node.id = path.scope.parent.declareTemporary("callee$")
     );
+
     var innerFnId = b.identifier(node.id.name + "$");
@@ -80,3 +86,5 @@ var contextId = path.scope.declareTemporary("context$");
       emitter.getContextFunction(innerFnId),
-      outerFnId,
+      // Async functions don't care about the outer function because they
+      // don't need it to be marked and don't inherit from its .prototype.
+      node.async ? b.literal(null) : outerFnId,
       b.thisExpression()
@@ -90,8 +98,15 @@ ];
 
-    outerBody.push(b.returnStatement(
-      b.callExpression(runtimeWrapMethod, wrapArgs)
-    ));
+    var wrapCall = b.callExpression(
+      node.async ? runtimeAsyncMethod : runtimeWrapMethod,
+      wrapArgs
+    );
 
+    outerBody.push(b.returnStatement(wrapCall));
     node.body = b.blockStatement(outerBody);
 
+    if (node.async) {
+      node.async = false;
+      return;
+    }
+
     if (n.FunctionDeclaration.check(node)) {
@@ -333,1 +348,12 @@ var pp = path.parent;
 }
+
+var awaitVisitor = types.PathVisitor.fromMethodsObject({
+  visitFunction: function(path) {
+    return false; // Don't descend into nested function scopes.
+  },
+
+  visitAwaitExpression: function(path) {
+    // Convert await expressions to yield expressions.
+    return b.yieldExpression(path.value.argument, false);
+  }
+});

main.js

@@ -19,3 +19,3 @@ /**
 var types = recast.types;
-var genFunExp = /\bfunction\s*\*/;
+var genOrAsyncFunExp = /\bfunction\s*\*|\basync\b/;
 var blockBindingExp = /\b(let|const)\s+/;
@@ -49,4 +49,4 @@ var runtimePath = path.join(__dirname, "runtime.js");
 
-  if (!genFunExp.test(source)) {
-    // Shortcut: no generators to transform.
+  if (!genOrAsyncFunExp.test(source)) {
+    // Shortcut: no generators or async functions to transform.
     return { code: runtime + source };
@@ -177,3 +177,3 @@ }
 exports.runtime = function runtime() {
-  require("regenerator/runtime");
+  require("./runtime");
 };

package.json

@@ -19,3 +19,3 @@ {
   ],
-  "version": "0.6.0",
+  "version": "0.6.1",
   "homepage": "http://github.com/facebook/regenerator",
@@ -33,4 +33,5 @@ "repository": {
     "commander": "~2.1.0",
-    "esprima-fb": "5001.1.0-dev-harmony-fb",
+    "esprima-fb": "~6001.1001.0-dev-harmony-fb",
     "recast": "~0.7.1",
+    "promise": "~5.0.0",
     "private": "~0.1.5",
@@ -37,0 +38,0 @@ "through": "~2.3.4",

runtime.js

@@ -21,2 +21,3 @@ /**
   var undefined; // More compressible than void 0.
+  var Promise = global.Promise || (global.Promise = require("promise"));
 
@@ -56,2 +57,27 @@ if (global.regeneratorRuntime) {
 
+  runtime.async = function(innerFn, self, tryList) {
+    return new Promise(function(resolve, reject) {
+      var generator = wrap(innerFn, self, tryList);
+      var callNext = step.bind(generator.next);
+      var callThrow = step.bind(generator.throw);
+
+      function step(arg) {
+        try {
+          var info = this(arg);
+          var value = info.value;
+        } catch (error) {
+          return reject(error);
+        }
+
+        if (info.done) {
+          resolve(value);
+        } else {
+          Promise.resolve(value).then(callNext, callThrow);
+        }
+      }
+
+      callNext();
+    });
+  };
+
   // Ensure isGeneratorFunction works when Function#name not supported.
@@ -58,0 +84,0 @@ if (GeneratorFunction.name !== "GeneratorFunction") {

New alerts

Major refactor

Supply chain risk

Package has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.

Found 1 instance in 1 package

Fixed alerts

Dynamic require

Supply chain risk

Dynamic require can indicate the package is performing dangerous or unsafe dynamic code execution.

Found 1 instance in 1 package

Environment variable access

Supply chain risk

Package accesses environment variables, which may be a sign of credential stuffing or data theft.

Found 2 instances in 1 package

High entropy strings

Supply chain risk

Contains high entropy strings. This could be a sign of encrypted data, leaked secrets or obfuscated code.

Found 1 instance in 1 package

Long strings

Supply chain risk

Contains long string literals, which may be a sign of obfuscated or packed code.

Found 1 instance in 1 package

Improved metrics

Number of low supply chain risk alerts

1

decreased by-92.31%

Worsened metrics

Total package byte prevSize

80497

decreased by-91.68%

Dependency count

7

increased by16.67%

Number of package files

16

decreased by-5.88%

Lines of code

2152

decreased by-91.96%

Number of medium supply chain risk alerts

2

increased by100%

Dependency changes

• + Addedpromise@~5.0.0

• + Addedasap@1.0.0(transitive)

• + Addedpromise@5.0.0(transitive)

• - Removedesprima-fb@5001.1.0-dev-harmony-fb(transitive)

• Updatedesprima-fb@~6001.1001.0-dev-harmony-fb