upgrade to flow-bin 0.95.1 and fix indent-string libdef

flow-typed/npm/indent-string_v3.2.x.js

@@ -0,0 +1,13 @@
+// flow-typed signature: a08042e1cdd3c4a5f6619492d6bba137
+// flow-typed version: 3581491ac8/indent-string_v3.2.x/flow_>=v0.25.x
+
+declare module 'indent-string' {
+  declare module.exports: (
+    input: string,
+    count?: number,
+    opts?: {|
+      +includeEmptyLines?: bool,
+      +indent?: string,
+    |}
+  ) => string;
+}

package.json

@@ -41,7 +41,8 @@
     "eslint-plugin-flowtype": "^3.2.0",
     "eslint-plugin-prettier": "^3.0.0",
     "eslint-plugin-react": "^7.11.1",
-    "flow-bin": "^0.85.0",
+    "flow-bin": "^0.95.1",
+    "flow-typed": "^2.5.1",
     "husky": "^1.1.2",
     "mocha": "^5.2.0",
     "mocha-doctest": "^0.3.4",

src/message.js

@@ -24,7 +24,7 @@ export class Message {
       return this.children.map(m => m.toString()).join(NEWLINE);
     } else {
       return [this.message]
-        .concat(this.children.map(m => indent(m.toString(), 1, INDENT)))
+        .concat(this.children.map(m => indent(m.toString(), 1, {indent: INDENT})))
         .join(NEWLINE);
     }
   }

src/schema.js

@@ -183,7 +183,9 @@ export class ConstantNode<V> extends Node<V> {
     return context.unwrap(value => {
       if (!this.eq(value, this.value)) {
         throw context.error(
-          `Expected ${JSON.stringify(this.value)} but got ${JSON.stringify(value)}`,
+          `Expected ${JSON.stringify(this.value) || 'undefined'} but got ${JSON.stringify(
+            value,
+          ) || 'undefined'}`,
         );
       }
       return (value: any);
@@ -373,8 +375,8 @@ export class EnumerationNode<V> extends Node<V> {
           return (value: any);
         }
       }
-      let expectation = this.values.map(v => JSON.stringify(v)).join(', ');
-      let repr = JSON.stringify(value);
+      let expectation = this.values.map(v => JSON.stringify(v) || 'undefined').join(', ');
+      let repr = JSON.stringify(value) || 'undefined';
       throw context.error(`Expected value to be one of ${expectation} but got ${repr}`);
     });
   }