Implement printer cases for TS{Conditional,Infer}Type.

Although (infer T) must frequently be parenthesized to avoid ambiguity, Recast does not have to encode that logic into FastPath#needsParens, because Babylon wraps such types with TSParenthesizedType. Cool! babel/babel#7404 benjamn/ast-types@da0367b microsoft/TypeScript#21316 microsoft/TypeScript#21496
benjamn · Feb 24, 2018 · eb043a4 · eb043a4 · benjamn · Feb 25, 2018
1 parent 6cf40b4
commit eb043a4
Showing 1 changed file with 21 additions and 0 deletions.
diff --git a/lib/printer.js b/lib/printer.js
@@ -1778,6 +1778,27 @@ function genericPrintNoParens(path, options, print) {
     case "TSIntersectionType":
         return fromString(" & ").join(path.map(print, "types"));
 
+    case "TSConditionalType":
+        parts.push(
+            path.call(print, "checkType"),
+            " extends ",
+            path.call(print, "extendsType"),
+            " ? ",
+            path.call(print, "trueType"),
+            " : ",
+            path.call(print, "falseType")
+        );
+
+        return concat(parts);
+
+    case "TSInferType":
+        parts.push(
+            "infer ",
+            path.call(print, "typeParameter")
+        );
+
+        return concat(parts);
+
     case "TSParenthesizedType":
         return concat([
             "(",