From bd65bb67e25a79b019d745b7262b2008ce2adb15 Mon Sep 17 00:00:00 2001
From: Florian Dold <florian.dold@gmail.com>
Date: Wed, 16 Nov 2016 01:59:39 +0100
Subject: incrementally verify denoms

The denominations are not stored in a separate object store.
---
 src/checkable.ts | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'src/checkable.ts')

diff --git a/src/checkable.ts b/src/checkable.ts
index b6ef49fac..c8cc27b26 100644
--- a/src/checkable.ts
+++ b/src/checkable.ts
@@ -72,6 +72,13 @@ export namespace Checkable {
     return target;
   }
 
+  function checkBoolean(target: any, prop: Prop, path: Path): any {
+    if (typeof target !== "boolean") {
+      throw new SchemaError(`expected boolean for ${path}, got ${typeof target} instead`);
+    }
+    return target;
+  }
+
 
   function checkAnyObject(target: any, prop: Prop, path: Path): any {
     if (typeof target !== "object") {
@@ -269,6 +276,11 @@ export namespace Checkable {
     chk.props.push({ propertyKey: propertyKey, checker: checkString });
   }
 
+  export function Boolean(target: Object, propertyKey: string | symbol): void {
+    let chk = mkChk(target);
+    chk.props.push({ propertyKey: propertyKey, checker: checkBoolean });
+  }
+
 
   function mkChk(target: any) {
     let chk = target[chkSym];
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