eslint-plugin-esm
Version:
ESLint plugin for linting ESM (import/export syntax)
17 lines • 2.13 kB
JavaScript
/**
* Like [lodash.memoize](https://lodash.com/docs/4.17.15#memoize)
* Type `Res` must be non-nullable, otherwise it will cause bug.
*/
export function memoize(fn) {
const cache = new Map(); // memory leak
return (arg) => {
const cachedResult = cache.get(arg);
if (cachedResult !== undefined) {
return cachedResult;
}
const result = fn(arg);
cache.set(arg, result);
return result;
};
}
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