ReaderTaskEither: add apFirstW and apSecondW

gcanti · Aug 22, 2021 · 27d9a10 · 27d9a10
1 parent 21e03f1
commit 27d9a10
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diff --git a/docs/modules/ReaderTaskEither.ts.md b/docs/modules/ReaderTaskEither.ts.md
@@ -32,7 +32,9 @@ Added in v2.0.0
   - [of](#of)
 - [combinators](#combinators)
   - [apFirst](#apfirst)
+  - [apFirstW](#apfirstw)
   - [apSecond](#apsecond)
+  - [apSecondW](#apsecondw)
   - [asksReaderTaskEither](#asksreadertaskeither)
   - [asksReaderTaskEitherW](#asksreadertaskeitherw)
   - [chainEitherK](#chaineitherk)
@@ -351,6 +353,20 @@ export declare const apFirst: <R, E, B>(
 
 Added in v2.0.0
 
+## apFirstW
+
+Less strict version of [`apFirst`](#apfirst).
+
+**Signature**
+
+```ts
+export declare const apFirstW: <R2, E2, A, B>(
+  second: ReaderTaskEither<R2, E2, B>
+) => <R1, E1>(first: ReaderTaskEither<R1, E1, A>) => ReaderTaskEither<R1 & R2, E2 | E1, A>
+```
+
+Added in v2.12.0
+
 ## apSecond
 
 Combine two effectful actions, keeping only the result of the second.
@@ -367,6 +383,20 @@ export declare const apSecond: <R, E, B>(
 
 Added in v2.0.0
 
+## apSecondW
+
+Less strict version of [`apSecond`](#apsecond).
+
+**Signature**
+
+```ts
+export declare const apSecondW: <R2, E2, A, B>(
+  second: ReaderTaskEither<R2, E2, B>
+) => <R1, E1>(first: ReaderTaskEither<R1, E1, A>) => ReaderTaskEither<R1 & R2, E2 | E1, B>
+```
+
+Added in v2.12.0
+
 ## asksReaderTaskEither
 
 Effectfully accesses the environment.

diff --git a/src/ReaderTaskEither.ts b/src/ReaderTaskEither.ts
@@ -824,6 +824,18 @@ export const apFirst =
   /*#__PURE__*/
   apFirst_(ApplyPar)
 
+/**
+ * Less strict version of [`apFirst`](#apfirst).
+ *
+ * @category combinators
+ * @since 2.12.0
+ */
+export const apFirstW: <R2, E2, A, B>(
+  second: ReaderTaskEither<R2, E2, B>
+) => <R1, E1>(first: ReaderTaskEither<R1, E1, A>) => ReaderTaskEither<R1 & R2, E1 | E2, A> =
+  /*#__PURE__*/
+  apFirst as any
+
 /**
  * Combine two effectful actions, keeping only the result of the second.
  *
@@ -836,6 +848,18 @@ export const apSecond =
   /*#__PURE__*/
   apSecond_(ApplyPar)
 
+/**
+ * Less strict version of [`apSecond`](#apsecond).
+ *
+ * @category combinators
+ * @since 2.12.0
+ */
+export const apSecondW: <R2, E2, A, B>(
+  second: ReaderTaskEither<R2, E2, B>
+) => <R1, E1>(first: ReaderTaskEither<R1, E1, A>) => ReaderTaskEither<R1 & R2, E1 | E2, B> =
+  /*#__PURE__*/
+  apSecond as any
+
 /**
  * @category instances
  * @since 2.7.0

diff --git a/test/ReaderTaskEither.ts b/test/ReaderTaskEither.ts
@@ -31,10 +31,22 @@ describe('ReaderTaskEither', () => {
       U.deepStrictEqual(await pipe(_.right('a'), _.apFirst(_.right('b')))({})(), E.right('a'))
     })
 
+    it('apFirstW', async () => {
+      const fa = _.right<{ readonly k: string }, 'Foo', string>('a')
+      const fb = _.right<{ readonly x: number }, 'Bar', boolean>(true)
+      U.deepStrictEqual(await pipe(fa, _.apFirstW(fb))({ k: 'v', x: 42 })(), E.right('a'))
+    })
+
     it('apSecond', async () => {
       U.deepStrictEqual(await pipe(_.right('a'), _.apSecond(_.right('b')))({})(), E.right('b'))
     })
 
+    it('apSecondW', async () => {
+      const fa = _.right<{ readonly k: string }, 'Foo', string>('a')
+      const fb = _.right<{ readonly x: number }, 'Bar', boolean>(true)
+      U.deepStrictEqual(await pipe(fa, _.apSecondW(fb))({ k: 'v', x: 42 })(), E.right(true))
+    })
+
     it('chain', async () => {
       const f = (a: string) => (a.length > 2 ? _.right(a.length) : _.left('b'))
       U.deepStrictEqual(await pipe(_.right('aaa'), _.chain(f))({})(), E.right(3))