Note truthy and falsy values

Author: razor-x

README.md

@@ -21,10 +21,10 @@ However, some additional input cases are handled:
   whitespace only values are parsed as `null`.
 - For `z.number()`, `z.boolean()`, `z.date()`,
   starting and ending whitespace is trimmed  before parsing.
-- For `z.boolean()`, the following values are parsed as `true`:
-    -
+- For `z.boolean()`, the following strings are parsed as `true`:
+  `true`, `True`, `TRUE`, `yes`, `Yes`, `YES`, and `1`.
 - For `z.boolean()`, the following values are parsed as `false`:
-    -
+  `false`, `False`, `FALSE`, `no`, `No`, `NO`, and '0'.
 - Parses `z.array()` in the following formats.
   In order to support unambiguous parsing, array string values
   containing a `,` are not supported.

test/edge-cases.test.ts

@@ -23,9 +23,15 @@ test('pass though number values that do not parse as number', (t) => {
     },
   )
 })
-test.todo(
-  'pass though boolean values that do not parse as truthy or falsy values',
-)
+
+test('pass though boolean values that do not parse as truthy or falsy values', (t) => {
+  t.deepEqual(parseUrlSearchParams('foo=a', z.object({ foo: z.boolean() })), {
+    foo: 'a',
+  })
+  t.deepEqual(parseUrlSearchParams('foo=tRue', z.object({ foo: z.number() })), {
+    foo: 'tRue',
+  })
+})
 
 // e.g., foo.bar= would conflict with foo.bar.a= or foo.bar.b=2
 // since this would be a null object containing values (null is still a value).