redext
Version:
A simple global store based on React Context and Hooks
87 lines (81 loc) • 2.31 kB
JavaScript
// src/hooks/useDeepMemo.ts
import React from "react";
// src/hooks/useDeepMemoize.ts
import { useRef } from "react";
// src/utils/deepEqual.ts
var equal = (a, b) => {
let ctor;
let len;
if (a === b) {
return true;
}
if (a && b && (ctor = a.constructor) === b.constructor) {
if (ctor === Date) {
return a.getTime() === b.getTime();
}
if (ctor === RegExp) {
return a.toString() === b.toString();
}
if (ctor === Array && (len = a.length) === b.length) {
while (len-- && equal(a[len], b[len])) ;
return len === -1;
}
if (ctor === Object) {
if (Object.keys(a).length !== Object.keys(b).length) {
return false;
}
for (len in a) {
if (!(len in b) || !equal(a[len], b[len])) {
return false;
}
}
return true;
}
}
return a !== a && b !== b;
};
function deepEqual(a, b) {
try {
return equal(a, b);
} catch (error) {
if (error.message && error.message.match(/stack|recursion/i) || error.number === -2146828260) {
console.warn("Warning: deepEqual does not handle circular references.", error.name, error.message);
return false;
}
throw error;
}
}
// src/hooks/useDeepMemoize.ts
var useDeepMemoize = (value) => {
const ref = useRef([]);
if (!deepEqual(value, ref.current)) {
ref.current = value;
}
return ref.current;
};
var useDeepMemoize_default = useDeepMemoize;
// src/utils/checkDeps.ts
var isPrimitive = (val) => {
return val == null || /^[sbn]/.test(typeof val);
};
var checkDeps = (deps, name) => {
const hookName = `React.${name.replace(/Deep/, "")}`;
if (!deps || deps.length === 0) {
console.warn(`${name} should not be used with no dependencies. Use ${hookName} instead.`);
}
if (deps.every(isPrimitive)) {
console.warn(`${name} should not be used with dependencies that are all primitive values. Use ${hookName} instead.`);
}
};
var checkDeps_default = checkDeps;
// src/hooks/useDeepMemo.ts
var useDeepMemo = (factory, dependencies) => {
if (process.env.NODE_ENV !== "production") {
checkDeps_default(dependencies, "useDeepMemo");
}
return React.useMemo(factory, useDeepMemoize_default(dependencies));
};
var useDeepMemo_default = useDeepMemo;
export {
useDeepMemo_default as default
};