25 lines
738 B
JavaScript
25 lines
738 B
JavaScript
"use strict";
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'use client';
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var _interopRequireWildcard = require("@babel/runtime/helpers/interopRequireWildcard").default;
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports.default = useLazyRef;
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var React = _interopRequireWildcard(require("react"));
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const UNINITIALIZED = {};
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/**
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* A React.useRef() that is initialized lazily with a function. Note that it accepts an optional
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* initialization argument, so the initialization function doesn't need to be an inline closure.
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*
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* @usage
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* const ref = useLazyRef(sortColumns, columns)
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*/
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function useLazyRef(init, initArg) {
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const ref = React.useRef(UNINITIALIZED);
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if (ref.current === UNINITIALIZED) {
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ref.current = init(initArg);
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}
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return ref;
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} |