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https://github.com/react/react-native-devtools-frontend.git
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Tim van der Lippe
16aca394c5
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>
39 lines
999 B
JavaScript
39 lines
999 B
JavaScript
import _arity from "./internal/_arity.js";
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import _curry1 from "./internal/_curry1.js";
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/**
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* Accepts a function `fn` and returns a function that guards invocation of
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* `fn` such that `fn` can only ever be called once, no matter how many times
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* the returned function is invoked. The first value calculated is returned in
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* subsequent invocations.
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*
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* @func
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* @memberOf R
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* @since v0.1.0
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* @category Function
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* @sig (a... -> b) -> (a... -> b)
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* @param {Function} fn The function to wrap in a call-only-once wrapper.
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* @return {Function} The wrapped function.
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* @example
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*
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* const addOneOnce = R.once(x => x + 1);
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* addOneOnce(10); //=> 11
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* addOneOnce(addOneOnce(50)); //=> 11
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*/
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var once =
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/*#__PURE__*/
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_curry1(function once(fn) {
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var called = false;
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var result;
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return _arity(fn.length, function () {
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if (called) {
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return result;
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}
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called = true;
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result = fn.apply(this, arguments);
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return result;
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});
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});
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export default once; |