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react-native-devtools-frontend/node_modules/ramda/es/view.js
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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

36 lines
1.0 KiB
JavaScript

import _curry2 from './internal/_curry2.js';
// `Const` is a functor that effectively ignores the function given to `map`.
var Const = function (x) {
return { value: x, 'fantasy-land/map': function () {
return this;
} };
};
/**
* Returns a "view" of the given data structure, determined by the given lens.
* The lens's focus determines which portion of the data structure is visible.
*
* @func
* @memberOf R
* @since v0.16.0
* @category Object
* @typedefn Lens s a = Functor f => (a -> f a) -> s -> f s
* @sig Lens s a -> s -> a
* @param {Lens} lens
* @param {*} x
* @return {*}
* @see R.prop, R.lensIndex, R.lensProp
* @example
*
* const xLens = R.lensProp('x');
*
* R.view(xLens, {x: 1, y: 2}); //=> 1
* R.view(xLens, {x: 4, y: 2}); //=> 4
*/
var view = /*#__PURE__*/_curry2(function view(lens, x) {
// Using `Const` effectively ignores the setter function of the `lens`,
// leaving the value returned by the getter function unmodified.
return lens(Const)(x).value;
});
export default view;