💥 refactor!: Rename fromKeys to constant.

Fixes #101.

BREAKING CHANGE: API change.

Author: make-github-pseudonymous-again

README.md

@@ -6,9 +6,9 @@ See [docs](https://iterable-iterator.github.io/mapping).
 Parent is [js-library](https://github.com/make-github-pseudonymous-again/js-library).
 
 ```js
-> import { fromKeys , reflect } from '@iterable-iterator/mapping' ;
+> import { constant , reflect } from '@iterable-iterator/mapping' ;
 > import {enumerate} from '@iterable-iterator/zip';
-> fromKeys( 'ab' , 1 )
+> constant( 'ab' , 1 )
 [['a', 1], ['b', 1]]
 > reflect(enumerate('ab'))
 [['a', 0], ['b', 1]]

src/fromKeys.js renamed to src/constant.js

@@ -6,6 +6,6 @@
  * @param {any} value
  * @return {IterableIterator} The output mapping.
  */
-export default function* fromKeys(keys, value) {
+export default function* constant(keys, value) {
 	for (const key of keys) yield [key, value];
 }

src/index.js

@@ -1,3 +1,3 @@
-export {default as fromKeys} from './fromKeys.js';
+export {default as constant} from './constant.js';
 export {default as reflect} from './reflect.js';
 export {default as toObject} from './toObject.js';

test/src/constant.js

@@ -0,0 +1,18 @@
+import test from 'ava';
+
+import {constant} from '../../src/index.js';
+
+test('constant', (t) => {
+	t.deepEqual([...constant('', 1)], []);
+
+	t.deepEqual(
+		[...constant('abcde', 1)],
+		[
+			['a', 1],
+			['b', 1],
+			['c', 1],
+			['d', 1],
+			['e', 1],
+		],
+	);
+});