feat: identity

soraLib · May 23, 2022 · 77f2e62 · 77f2e62
1 parent 545babf
commit 77f2e62
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Showing 2 changed files with 10 additions and 1 deletion.
diff --git a/src/function.ts b/src/function.ts
@@ -5,6 +5,11 @@ import { TupleLast } from './TupleT'
  */
 export type Lazy<A> = () => A
 
+/**
+ * Identity
+ */
+export const identity = <A>(a: A): A => a
+
 
 type PipeFn<A, B> = (a: A) => B
 

diff --git a/test/function.spec.ts b/test/function.spec.ts
@@ -1,4 +1,8 @@
-import { pipe } from '../src/function'
+import { identity, pipe } from '../src/function'
+
+test('identity', () => {
+  expect(identity(1)).toBe(1)
+})
 
 test('pipe1', () => {
   const f = pipe(