Require AST output to be opt-in, rather than opt-out.

2018-02-26 18:27:06 -08:00
parent d4a8c7672c
commit 8e3e6e0a88
3 changed files with 23 additions and 2 deletions
--- a/packages/babel-core/src/transformation/index.js
+++ b/packages/babel-core/src/transformation/index.js
@@ -64,7 +64,7 @@ export function runSync(
  return {
    metadata: file.metadata,
    options: opts,
-    ast: opts.ast !== false ? file.ast : null,
+    ast: opts.ast === true ? file.ast : null,
    code: outputCode === undefined ? null : outputCode,
    map: outputMap === undefined ? null : outputMap,
  };