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perf(core): test perf of skipping some lifecycle hooks for perf #4366

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merged 3 commits into from
May 23, 2024
Merged

perf(core): test perf of skipping some lifecycle hooks for perf #4366

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e86a0f4
test perf of skipping some lifecycle hooks for perf
JoviDeCroock Apr 30, 2024
3141810
Merge branch 'main' into test-skipping-lifecycles-for-funcs
JoviDeCroock May 21, 2024
a0f1f7c
Merge branch 'main' into test-skipping-lifecycles-for-funcs
JoviDeCroock May 23, 2024
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18 changes: 11 additions & 7 deletions src/diff/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -62,6 +62,8 @@ export function diff(
try {
let c, isNew, oldProps, oldState, snapshot, clearProcessingException;
let newProps = newVNode.props;
const isClassComponent =
'prototype' in newType && newType.prototype.render;

// Necessary for createContext api. Setting this property will pass
// the context value as `this.context` just for this component.
Expand All @@ -79,7 +81,7 @@ export function diff(
clearProcessingException = c._processingException = c._pendingError;
} else {
// Instantiate the new component
if ('prototype' in newType && newType.prototype.render) {
if (isClassComponent) {
// @ts-expect-error The check above verifies that newType is suppose to be constructed
newVNode._component = c = new newType(newProps, componentContext); // eslint-disable-line new-cap
} else {
Expand All @@ -103,11 +105,11 @@ export function diff(
}

// Invoke getDerivedStateFromProps
if (c._nextState == null) {
if (isClassComponent && c._nextState == null) {
c._nextState = c.state;
}

if (newType.getDerivedStateFromProps != null) {
if (isClassComponent && newType.getDerivedStateFromProps != null) {
if (c._nextState == c.state) {
c._nextState = assign({}, c._nextState);
}
Expand All @@ -125,17 +127,19 @@ export function diff(
// Invoke pre-render lifecycle methods
if (isNew) {
if (
isClassComponent &&
newType.getDerivedStateFromProps == null &&
c.componentWillMount != null
) {
c.componentWillMount();
}

if (c.componentDidMount != null) {
if (isClassComponent && c.componentDidMount != null) {
c._renderCallbacks.push(c.componentDidMount);
}
} else {
if (
isClassComponent &&
newType.getDerivedStateFromProps == null &&
newProps !== oldProps &&
c.componentWillReceiveProps != null
Expand Down Expand Up @@ -186,7 +190,7 @@ export function diff(
c.componentWillUpdate(newProps, c._nextState, componentContext);
}

if (c.componentDidUpdate != null) {
if (isClassComponent && c.componentDidUpdate != null) {
c._renderCallbacks.push(() => {
c.componentDidUpdate(oldProps, oldState, snapshot);
});
Expand All @@ -200,7 +204,7 @@ export function diff(

let renderHook = options._render,
count = 0;
if ('prototype' in newType && newType.prototype.render) {
if (isClassComponent) {
c.state = c._nextState;
c._dirty = false;

Expand Down Expand Up @@ -231,7 +235,7 @@ export function diff(
globalContext = assign(assign({}, globalContext), c.getChildContext());
}

if (!isNew && c.getSnapshotBeforeUpdate != null) {
if (isClassComponent && !isNew && c.getSnapshotBeforeUpdate != null) {
snapshot = c.getSnapshotBeforeUpdate(oldProps, oldState);
}

Expand Down