@babel/plugin-transform-runtime - npm Package Compare versions

Comparing version 7.3.4 to 7.4.0

lib/index.js

@@ -58,4 +58,6 @@ "use strict";
 
-var _definitions = _interopRequireDefault(require("./definitions"));
+var _runtimeCorejs2Definitions = _interopRequireDefault(require("./runtime-corejs2-definitions"));
 
+var _runtimeCorejs3Definitions = _interopRequireDefault(require("./runtime-corejs3-definitions"));
+
 function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
@@ -85,3 +87,3 @@
   const {
-    corejs: corejsVersion = false,
+    corejs,
     helpers: useRuntimeHelpers = true,
@@ -93,4 +95,22 @@ regenerator: useRuntimeRegenerator = true,
   } = options;
-  const definitions = (0, _definitions.default)(runtimeVersion);
+  let proposals = false;
+  let rawVersion;
 
+  if (typeof corejs === "object" && corejs !== null) {
+    rawVersion = corejs.version;
+    proposals = Boolean(corejs.proposals);
+  } else {
+    rawVersion = corejs;
+  }
+
+  const corejsVersion = rawVersion ? Number(rawVersion) : false;
+
+  if (![false, 2, 3].includes(corejsVersion)) {
+    throw new Error(`The \`core-js\` version must be false, 2 or 3, but got ${JSON.stringify(rawVersion)}.`);
+  }
+
+  if (proposals && (!corejsVersion || corejsVersion < 3)) {
+    throw new Error("The 'proposals' option is only supported when using 'corejs: 3'");
+  }
+
   if (typeof useRuntimeRegenerator !== "boolean") {
@@ -112,6 +132,2 @@ throw new Error("The 'regenerator' option must be undefined, or a boolean.");
 
-  if (corejsVersion !== false && (typeof corejsVersion !== "number" || corejsVersion !== 2) && (typeof corejsVersion !== "string" || corejsVersion !== "2")) {
-    throw new Error(`The 'corejs' option must be undefined, false, 2 or '2', ` + `but got ${JSON.stringify(corejsVersion)}.`);
-  }
-
   if (typeof runtimeVersion !== "string") {
@@ -125,2 +141,10 @@ throw new Error(`The 'version' option must be a version string.`);
 
+  function hasMapping(methods, name) {
+    return has(methods, name) && (proposals || methods[name].stable);
+  }
+
+  function hasStaticMapping(object, method) {
+    return has(StaticProperties, object) && hasMapping(StaticProperties[object], method);
+  }
+
   if (has(options, "useBuiltIns")) {
@@ -130,3 +154,3 @@ if (options.useBuiltIns) {
     } else {
-      throw new Error("The 'useBuiltIns' option has been removed. Use the 'corejs'" + "option with value '2' to polyfill with CoreJS 2.x via @babel/runtime.");
+      throw new Error("The 'useBuiltIns' option has been removed. Use the 'corejs'" + "option to polyfill with `core-js` via @babel/runtime.");
     }
@@ -139,3 +163,3 @@ }
     } else {
-      throw new Error("The 'polyfill' option has been removed. Use the 'corejs'" + "option with value '2' to polyfill with CoreJS 2.x via @babel/runtime.");
+      throw new Error("The 'polyfill' option has been removed. Use the 'corejs'" + "option to polyfill with `core-js` via @babel/runtime.");
     }
@@ -149,4 +173,12 @@ }
   const esModules = useESModules === "auto" ? api.caller(supportsStaticESM) : useESModules;
-  const injectCoreJS2 = `${corejsVersion}` === "2";
-  const moduleName = injectCoreJS2 ? "@babel/runtime-corejs2" : "@babel/runtime";
+  const injectCoreJS2 = corejsVersion === 2;
+  const injectCoreJS3 = corejsVersion === 3;
+  const injectCoreJS = corejsVersion !== false;
+  const moduleName = injectCoreJS3 ? "@babel/runtime-corejs3" : injectCoreJS2 ? "@babel/runtime-corejs2" : "@babel/runtime";
+  const corejsRoot = injectCoreJS3 && !proposals ? "core-js-stable" : "core-js";
+  const {
+    BuiltIns,
+    StaticProperties,
+    InstanceProperties
+  } = (injectCoreJS2 ? _runtimeCorejs2Definitions.default : _runtimeCorejs3Definitions.default)(runtimeVersion);
   const HEADER_HELPERS = ["interopRequireWildcard", "interopRequireDefault"];
@@ -205,4 +237,7 @@ let modulePath = moduleName;
         } = path;
+        const {
+          name
+        } = node;
 
-        if (node.name === "regeneratorRuntime" && useRuntimeRegenerator) {
+        if (name === "regeneratorRuntime" && useRuntimeRegenerator) {
           path.replaceWith(this.addDefaultImport(`${modulePath}/regenerator`, "regeneratorRuntime"));
@@ -212,14 +247,43 @@ return;
 
-        if (!injectCoreJS2) return;
+        if (!injectCoreJS) return;
         if (_core().types.isMemberExpression(parent)) return;
-        if (!has(definitions.builtins, node.name)) return;
-        if (scope.getBindingIdentifier(node.name)) return;
-        path.replaceWith(this.addDefaultImport(`${modulePath}/core-js/${definitions.builtins[node.name]}`, node.name));
+        if (!hasMapping(BuiltIns, name)) return;
+        if (scope.getBindingIdentifier(name)) return;
+        path.replaceWith(this.addDefaultImport(`${modulePath}/${corejsRoot}/${BuiltIns[name].path}`, name));
       },
 
       CallExpression(path) {
-        if (!injectCoreJS2) return;
-        if (path.node.arguments.length) return;
-        const callee = path.node.callee;
+        if (!injectCoreJS) return;
+        const {
+          node
+        } = path;
+        const {
+          callee
+        } = node;
         if (!_core().types.isMemberExpression(callee)) return;
+        const {
+          object,
+          property
+        } = callee;
+        const propertyName = property.name;
+
+        if (injectCoreJS3 && !hasStaticMapping(object.name, propertyName)) {
+          if (hasMapping(InstanceProperties, propertyName)) {
+            let context1, context2;
+
+            if (_core().types.isIdentifier(object)) {
+              context1 = object;
+              context2 = _core().types.cloneNode(object);
+            } else {
+              context1 = path.scope.generateDeclaredUidIdentifier("context");
+              context2 = _core().types.assignmentExpression("=", context1, object);
+            }
+
+            node.callee = _core().types.memberExpression(_core().types.callExpression(this.addDefaultImport(`${moduleName}/${corejsRoot}/instance/${InstanceProperties[propertyName].path}`, `${propertyName}InstanceProperty`), [context2]), _core().types.identifier("call"));
+            node.arguments.unshift(context1);
+            return;
+          }
+        }
+
+        if (node.arguments.length) return;
         if (!callee.computed) return;
@@ -231,7 +295,7 @@
 
-        path.replaceWith(_core().types.callExpression(this.addDefaultImport(`${modulePath}/core-js/get-iterator`, "getIterator"), [callee.object]));
+        path.replaceWith(_core().types.callExpression(this.addDefaultImport(`${modulePath}/core-js/get-iterator`, "getIterator"), [object]));
       },
 
       BinaryExpression(path) {
-        if (!injectCoreJS2) return;
+        if (!injectCoreJS) return;
         if (path.node.operator !== "in") return;
@@ -244,3 +308,3 @@ if (!path.get("left").matchesPattern("Symbol.iterator")) return;
         enter(path) {
-          if (!injectCoreJS2) return;
+          if (!injectCoreJS) return;
           if (!path.isReferenced()) return;
@@ -250,24 +314,34 @@ const {
           } = path;
-          const obj = node.object;
-          const prop = node.property;
-          if (!_core().types.isReferenced(obj, node)) return;
-          if (node.computed) return;
-          if (!has(definitions.methods, obj.name)) return;
-          const methods = definitions.methods[obj.name];
-          if (!has(methods, prop.name)) return;
-          if (path.scope.getBindingIdentifier(obj.name)) return;
+          const {
+            object,
+            property
+          } = node;
+          if (!_core().types.isReferenced(object, node)) return;
 
-          if (obj.name === "Object" && prop.name === "defineProperty" && path.parentPath.isCallExpression()) {
-            const call = path.parentPath.node;
+          if (node.computed) {
+            if (injectCoreJS2) return;
 
-            if (call.arguments.length === 3 && _core().types.isLiteral(call.arguments[1])) {
-              return;
+            if (path.get("property").matchesPattern("Symbol.iterator")) {
+              path.replaceWith(_core().types.callExpression(this.addDefaultImport(`${moduleName}/core-js/get-iterator-method`, "getIteratorMethod"), [object]));
             }
+
+            return;
           }
 
-          path.replaceWith(this.addDefaultImport(`${modulePath}/core-js/${methods[prop.name]}`, `${obj.name}$${prop.name}`));
+          const objectName = object.name;
+          const propertyName = property.name;
+
+          if (path.scope.getBindingIdentifier(objectName) || !hasStaticMapping(objectName, propertyName)) {
+            if (injectCoreJS3 && hasMapping(InstanceProperties, propertyName)) {
+              path.replaceWith(_core().types.callExpression(this.addDefaultImport(`${moduleName}/${corejsRoot}/instance/${InstanceProperties[propertyName].path}`, `${propertyName}InstanceProperty`), [object]));
+            }
+
+            return;
+          }
+
+          path.replaceWith(this.addDefaultImport(`${modulePath}/${corejsRoot}/${StaticProperties[objectName][propertyName].path}`, `${objectName}$${propertyName}`));
         },
 
         exit(path) {
-          if (!injectCoreJS2) return;
+          if (!injectCoreJS) return;
           if (!path.isReferenced()) return;
@@ -277,6 +351,11 @@ const {
           } = path;
-          const obj = node.object;
-          if (!has(definitions.builtins, obj.name)) return;
-          if (path.scope.getBindingIdentifier(obj.name)) return;
-          path.replaceWith(_core().types.memberExpression(this.addDefaultImport(`${modulePath}/core-js/${definitions.builtins[obj.name]}`, obj.name), node.property, node.computed));
+          const {
+            object
+          } = node;
+          const {
+            name
+          } = object;
+          if (!hasMapping(BuiltIns, name)) return;
+          if (path.scope.getBindingIdentifier(name)) return;
+          path.replaceWith(_core().types.memberExpression(this.addDefaultImport(`${modulePath}/${corejsRoot}/${BuiltIns[name].path}`, name), node.property, node.computed));
         }
@@ -283,0 +362,0 @@

package.json

 {
   "name": "@babel/plugin-transform-runtime",
-  "version": "7.3.4",
+  "version": "7.4.0",
   "description": "Externalise references to helpers and builtins, automatically polyfilling your code without polluting globals",
@@ -24,12 +24,14 @@ "repository": "https://github.com/babel/babel/tree/master/packages/babel-plugin-transform-runtime",
   "devDependencies": {
-    "@babel/core": "^7.3.4",
+    "@babel/core": "^7.4.0",
     "@babel/helper-plugin-test-runner": "^7.0.0",
-    "@babel/helpers": "^7.2.0",
-    "@babel/plugin-transform-runtime": "^7.3.4",
-    "@babel/preset-env": "^7.3.4",
-    "@babel/runtime": "^7.3.4",
-    "@babel/template": "^7.0.0",
+    "@babel/helpers": "^7.4.0",
+    "@babel/plugin-transform-member-expression-literals": "^7.2.0",
+    "@babel/plugin-transform-property-literals": "^7.2.0",
+    "@babel/plugin-transform-runtime": "^7.4.0",
+    "@babel/preset-env": "^7.4.0",
+    "@babel/runtime": "^7.4.0",
+    "@babel/template": "^7.4.0",
     "@babel/types": "7.0.0-beta.53"
   },
-  "gitHead": "1f6454cc90fe33e0a32260871212e2f719f35741"
+  "gitHead": "f1328fb913b5a93d54dfc6e3728b1f56c8f4a804"
 }

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increased by135.85%

Number of package files

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increased by40%

Lines of code

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increased by291.62%

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