feat: Add null and undefined types #64

simenandre · Apr 27, 2021 · ac8be76 · ac8be76
1 parent a5ad6d3
commit ac8be76
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Showing 3 changed files with 10 additions and 0 deletions.
diff --git a/src/__tests__/main.test.ts b/src/__tests__/main.test.ts
@@ -27,6 +27,8 @@ describe('runtype generation', () => {
             { name: 'someString', type: { kind: 'string' } },
             { name: 'someSymbol', type: { kind: 'symbol' } },
             { name: 'someUnknown', type: { kind: 'unknown' } },
+            { name: 'someNull', type: { kind: 'null' } },
+            { name: 'someUndefined', type: { kind: 'undefined' } },
             {
               name: 'someLiteral1',
               type: { kind: 'literal', value: 'string' },
@@ -113,6 +115,8 @@ describe('runtype generation', () => {
         someString: rt.String,
         someSymbol: rt.Symbol,
         someUnknown: rt.Unknown,
+        someNull: rt.Null,
+        someUndefined: rt.Undefined,
         someLiteral1: rt.Literal(\\"string\\"),
         someLiteral2: rt.Literal(1337),
         someLiteral3: rt.Literal(true),
@@ -496,9 +500,11 @@ describe('runtype generation', () => {
     ['boolean', 'Boolean'],
     ['function', 'Function'],
     ['never', 'Never'],
+    ['null', 'Null'],
     ['number', 'Number'],
     ['string', 'String'],
     ['symbol', 'Symbol'],
+    ['undefined', 'Undefined'],
     ['unknown', 'Unknown'],
   ] as const)('generates runtype with `%s` kind', (kind, runtype) => {
     const source = generateRuntypes(

diff --git a/src/main.ts b/src/main.ts
@@ -119,8 +119,10 @@ const writers: Record<
   function: simpleWriter('rt.Function'),
   never: simpleWriter('rt.Never'),
   number: simpleWriter('rt.Number'),
+  null: simpleWriter('rt.Null'),
   string: simpleWriter('rt.String'),
   symbol: simpleWriter('rt.Symbol'),
+  undefined: simpleWriter('rt.Undefined'),
   unknown: simpleWriter('rt.Unknown'),
   array: writeArrayType,
   record: writeRecordType,

diff --git a/src/types.ts b/src/types.ts
@@ -9,9 +9,11 @@ const simpleTypeRt = rt.Record({
     rt.Literal('boolean'),
     rt.Literal('function'),
     rt.Literal('never'),
+    rt.Literal('null'),
     rt.Literal('number'),
     rt.Literal('string'),
     rt.Literal('symbol'),
+    rt.Literal('undefined'),
     rt.Literal('unknown'),
   ),
 });