Support unary expression in isPure check

2015-12-07 11:55:21 -08:00 · 2015-12-07 11:55:21 -08:00 · 6601a6f737
commit 6601a6f737
parent b8f5ca4ff0
1 changed files with 2 additions and 0 deletions
--- a/packages/babel-traverse/src/scope/index.js
+++ b/packages/babel-traverse/src/scope/index.js
@ -596,6 +596,8 @@ export default class Scope {
    } else if (t.isClassProperty(node)) {
      if (node.computed && !this.isPure(node.key, constantsOnly)) return false;
      return this.isPure(node.value, constantsOnly);
+    } else if (t.isUnaryExpression(node)) {
+      return this.isPure(node.argument);
    } else {
      return t.isPureish(node);
    }