Files
react-native-devtools-frontend/node_modules/ramda/es/lens.js
T
Tim van der Lippe 16aca394c5 Update ESLint and related packages
Major update breaking changes:
- ESLint 7.0.0 (https://eslint.org/docs/user-guide/migrating-to-7.0.0) now includes
.eslint.rc.js in its list, which is fine for us. Other changes are not applicable
for us.
- eslint-plugin-mocha (https://github.com/lo1tuma/eslint-plugin-mocha/blob/master/CHANGELOG.md#700-may-13-2020)
drops support for ESLint <7, but this CL updates to 7+. Other changes are
not applicable for us.

DISABLE_THIRD_PARTY_CHECK=Updating ESLint
R=petermarshall@chromium.org

Change-Id: I7760e084ef87f73a92f9ea4e075fb4c065047f5a
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2534873
Commit-Queue: Tim van der Lippe <tvanderlippe@chromium.org>
Reviewed-by: Peter Marshall <petermarshall@chromium.org>
2020-11-13 12:28:15 +00:00

39 lines
1.1 KiB
JavaScript

import _curry2 from "./internal/_curry2.js";
import map from "./map.js";
/**
* Returns a lens for the given getter and setter functions. The getter "gets"
* the value of the focus; the setter "sets" the value of the focus. The setter
* should not mutate the data structure.
*
* @func
* @memberOf R
* @since v0.8.0
* @category Object
* @typedefn Lens s a = Functor f => (a -> f a) -> s -> f s
* @sig (s -> a) -> ((a, s) -> s) -> Lens s a
* @param {Function} getter
* @param {Function} setter
* @return {Lens}
* @see R.view, R.set, R.over, R.lensIndex, R.lensProp
* @example
*
* const xLens = R.lens(R.prop('x'), R.assoc('x'));
*
* R.view(xLens, {x: 1, y: 2}); //=> 1
* R.set(xLens, 4, {x: 1, y: 2}); //=> {x: 4, y: 2}
* R.over(xLens, R.negate, {x: 1, y: 2}); //=> {x: -1, y: 2}
*/
var lens =
/*#__PURE__*/
_curry2(function lens(getter, setter) {
return function (toFunctorFn) {
return function (target) {
return map(function (focus) {
return setter(focus, target);
}, toFunctorFn(getter(target)));
};
};
});
export default lens;