Support boolean literals

akheron · Sep 1, 2023 · f0d4397 · f0d4397
1 parent 6dd60e2
commit f0d4397
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Showing 3 changed files with 20 additions and 0 deletions.
diff --git a/src/generate.ts b/src/generate.ts
@@ -991,6 +991,10 @@ const typeToSchema = (
       if (isNumberType(type)) {
         return { type: 'number', ...base }
       }
+      if (isBooleanLiteralType(type)) {
+        const isTrue = type === ctx.checker.getTrueType()
+        return { type: 'boolean', enum: [isTrue], ...base }
+      }
       if (isBooleanType(type)) {
         return { type: 'boolean', ...base }
       }

diff --git a/tests/__snapshots__/generate.spec.ts.snap b/tests/__snapshots__/generate.spec.ts.snap
@@ -746,6 +746,12 @@ Object {
                     "format": "date-time",
                     "type": "string",
                   },
+                  "falseLit": Object {
+                    "enum": Array [
+                      false,
+                    ],
+                    "type": "boolean",
+                  },
                   "nullableNum": Object {
                     "nullable": true,
                     "type": "number",
@@ -797,6 +803,12 @@ Object {
                     ],
                     "type": "string",
                   },
+                  "trueLit": Object {
+                    "enum": Array [
+                      true,
+                    ],
+                    "type": "boolean",
+                  },
                 },
                 "required": Array [
                   "str",
@@ -807,6 +819,8 @@ Object {
                   "numLits",
                   "strLit",
                   "strLits",
+                  "trueLit",
+                  "falseLit",
                   "date",
                 ],
                 "type": "object",

diff --git a/tests/test-routes.ts b/tests/test-routes.ts
@@ -70,6 +70,8 @@ const codec = t.intersection([
     numLits: t.union([t.literal(42), t.literal(123)]),
     strLit: t.literal('foo'),
     strLits: t.union([t.literal('foo'), t.literal('bar')]),
+    trueLit: t.literal(true),
+    falseLit: t.literal(false),
     date: DateFromISOString,
   }),
   t.partial({ optionalBool: t.boolean }),