Ensure babel-preset-env targets input object is not mutated (#7438)

2018-02-27 16:46:24 +02:00 · 2018-02-27 16:46:24 +02:00 · f004972625
commit f004972625
parent 5459c75d64
1 changed files with 1 additions and 1 deletions
--- a/packages/babel-preset-env/src/normalize-options.js
+++ b/packages/babel-preset-env/src/normalize-options.js
@ -169,7 +169,7 @@ export default function normalizeOptions(opts: Options) {
      false,
    ),
    spec: validateBoolOption("loose", opts.spec, false),
-    targets: opts.targets,
+    targets: Object.assign({}, opts.targets),
    useBuiltIns: validateUseBuiltInsOption(opts.useBuiltIns),
  };
 }