babel-loader - npm Package Compare versions

Comparing version 8.0.0-beta.4 to 8.0.0-beta.5

lib/transform.js

@@ -20,3 +20,3 @@ "use strict";
     try {
-      result = yield transform(source, options);
+      result = yield transform(source, injectCaller(options));
     } catch (err) {
@@ -58,2 +58,38 @@ throw err.message && err.codeFrame ? new LoaderError(err) : err;
 
-module.exports.version = babel.version;
+module.exports.version = babel.version;
+
+function injectCaller(opts) {
+  if (!supportsCallerOption()) return opts;
+  return Object.assign({}, opts, {
+    caller: Object.assign({
+      name: "babel-loader",
+      // Webpack >= 2 supports ESM and dynamic import.
+      supportsStaticESM: true,
+      supportsDynamicImport: true
+    }, opts.caller)
+  });
+} // TODO: We can remove this eventually, I'm just adding it so that people have
+// a little time to migrate to the newer RCs of @babel/core without getting
+// hard-to-diagnose errors about unknown 'caller' options.
+
+
+let supportsCallerOptionFlag = undefined;
+
+function supportsCallerOption() {
+  if (supportsCallerOptionFlag === undefined) {
+    try {
+      // Rather than try to match the Babel version, we just see if it throws
+      // when passed a 'caller' flag, and use that to decide if it is supported.
+      babel.loadPartialConfig({
+        caller: undefined,
+        babelrc: false,
+        configFile: false
+      });
+      supportsCallerOptionFlag = true;
+    } catch (err) {
+      supportsCallerOptionFlag = false;
+    }
+  }
+
+  return supportsCallerOptionFlag;
+}

package.json

 {
   "name": "babel-loader",
-  "version": "8.0.0-beta.4",
+  "version": "8.0.0-beta.5",
   "description": "babel module loader for webpack",
@@ -5,0 +5,0 @@ "files": [

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Improved metrics

Total package byte prevSize

33051

increased by3.46%

Lines of code

414

increased by8.09%

No dependency changes