Creepso/stremio-web
1
0
Fork 0
mirror of https://github.com/Stremio/stremio-web.git synced 2026-04-21 03:22:11 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

call cb in useDeepEqualMemo only when needed

Browse source
This commit is contained in:
nklhrstv 2020-10-16 17:09:24 +03:00
parent 5049cee10d
commit 21b1da7664
1 changed files with 6 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

8
src/common/useDeepEqualMemo.js
View file

@ -4,12 +4,16 @@ const React = require('react');
const isEqual = require('lodash.isequal'); const isEqual = require('lodash.isequal');
const useDeepEqualMemo = (cb, deps) => { const useDeepEqualMemo = (cb, deps) => {
const valueRef = React.useRef(cb()); const valueRef = React.useRef();
const mountedRef = React.useRef(false);
const prevDepsRef = React.useRef(deps); const prevDepsRef = React.useRef(deps);
if (!isEqual(prevDepsRef.current, deps)) { if (!mountedRef.current || !isEqual(prevDepsRef.current, deps)) {
valueRef.current = cb(); valueRef.current = cb();
prevDepsRef.current = deps; prevDepsRef.current = deps;
} }
React.useLayoutEffect(() => {
mountedRef.current = true;
}, []);
return valueRef.current; return valueRef.current;
}; };