[flow] Allow type casts in array patterns inside arrow parameters (#9069)

2018-11-24 12:23:49 +01:00
parent d2971a1959
commit 856edbf95f
15 changed files with 1801 additions and 6 deletions
--- a/packages/babel-parser/src/parser/lval.js
+++ b/packages/babel-parser/src/parser/lval.js
@@ -177,11 +177,26 @@ export default class LValParser extends NodeUtils {

  toReferencedList(
    exprList: $ReadOnlyArray<?Expression>,
-    isInParens?: boolean, // eslint-disable-line no-unused-vars
+    isParenthesizedExpr?: boolean, // eslint-disable-line no-unused-vars
  ): $ReadOnlyArray<?Expression> {
    return exprList;
  }

+  toReferencedListDeep(
+    exprList: $ReadOnlyArray<?Expression>,
+    isParenthesizedExpr?: boolean,
+  ): $ReadOnlyArray<?Expression> {
+    this.toReferencedList(exprList, isParenthesizedExpr);
+
+    for (const expr of exprList) {
+      if (expr && expr.type === "ArrayExpression") {
+        this.toReferencedListDeep(expr.elements);
+      }
+    }
+
+    return exprList;
+  }
+
  // Parses spread element.

  parseSpread<T: RestElement | SpreadElement>(