Files
react-native-devtools-frontend/node_modules/ramda/es/lensIndex.js
T
Jack Franklin 8b9aa2fca6 Prefer eslint-mocha for linting .only in tests
DISABLE_THIRD_PARTY_CHECK=new npm module causes package-lock change

We can get rid of a custom script and use ESLint for these rules.

Additionally this means editors will highlight the issue in the editor.

Change-Id: I552b52e7f07b4e7430b3f685dbc3b5fad36ffff2
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2052167
Reviewed-by: Paul Lewis <aerotwist@chromium.org>
Commit-Queue: Jack Franklin <jacktfranklin@chromium.org>
2020-02-12 18:12:22 +00:00

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817 B
JavaScript

import _curry1 from './internal/_curry1.js';
import lens from './lens.js';
import nth from './nth.js';
import update from './update.js';
/**
* Returns a lens whose focus is the specified index.
*
* @func
* @memberOf R
* @since v0.14.0
* @category Object
* @typedefn Lens s a = Functor f => (a -> f a) -> s -> f s
* @sig Number -> Lens s a
* @param {Number} n
* @return {Lens}
* @see R.view, R.set, R.over
* @example
*
* const headLens = R.lensIndex(0);
*
* R.view(headLens, ['a', 'b', 'c']); //=> 'a'
* R.set(headLens, 'x', ['a', 'b', 'c']); //=> ['x', 'b', 'c']
* R.over(headLens, R.toUpper, ['a', 'b', 'c']); //=> ['A', 'b', 'c']
*/
var lensIndex = /*#__PURE__*/_curry1(function lensIndex(n) {
return lens(nth(n), update(n));
});
export default lensIndex;