Files
react-native-devtools-frontend/node_modules/ramda/es/unfold.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

42 lines
1.3 KiB
JavaScript

import _curry2 from "./internal/_curry2.js";
/**
* Builds a list from a seed value. Accepts an iterator function, which returns
* either false to stop iteration or an array of length 2 containing the value
* to add to the resulting list and the seed to be used in the next call to the
* iterator function.
*
* The iterator function receives one argument: *(seed)*.
*
* @func
* @memberOf R
* @since v0.10.0
* @category List
* @sig (a -> [b]) -> * -> [b]
* @param {Function} fn The iterator function. receives one argument, `seed`, and returns
* either false to quit iteration or an array of length two to proceed. The element
* at index 0 of this array will be added to the resulting array, and the element
* at index 1 will be passed to the next call to `fn`.
* @param {*} seed The seed value.
* @return {Array} The final list.
* @example
*
* const f = n => n > 50 ? false : [-n, n + 10];
* R.unfold(f, 10); //=> [-10, -20, -30, -40, -50]
* @symb R.unfold(f, x) = [f(x)[0], f(f(x)[1])[0], f(f(f(x)[1])[1])[0], ...]
*/
var unfold =
/*#__PURE__*/
_curry2(function unfold(fn, seed) {
var pair = fn(seed);
var result = [];
while (pair && pair.length) {
result[result.length] = pair[0];
pair = fn(pair[1]);
}
return result;
});
export default unfold;