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[compiler] Don't throw calculate in render when there is a global function call in the effect
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+12
@@ -20,6 +20,7 @@ import {
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isUseStateType,
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isUseRefType,
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} from '../HIR';
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import {printInstruction} from '../HIR/PrintHIR';
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import {eachInstructionLValue, eachInstructionOperand} from '../HIR/visitors';
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import {isMutable} from '../ReactiveScopes/InferReactiveScopeVariables';
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import {assertExhaustive} from '../Utils/utils';
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@@ -276,6 +277,7 @@ function validateEffect(
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sourceIds: Set<IdentifierId>;
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}> = [];
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const globals: Set<IdentifierId> = new Set();
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for (const block of effectFunction.body.blocks.values()) {
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for (const pred of block.preds) {
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if (!seenBlocks.has(pred)) {
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@@ -319,6 +321,16 @@ function validateEffect(
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// If the callee is a prop we can't confidently say that it should be derived in render
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return;
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}
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if (globals.has(instr.value.callee.identifier.id)) {
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// If the callee is a global we can't confidently say that it should be derived in render
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return;
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}
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} else if (instr.value.kind === 'LoadGlobal') {
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globals.add(instr.lvalue.identifier.id);
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for (const operand of eachInstructionOperand(instr)) {
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globals.add(operand.identifier.id);
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}
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}
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}
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seenBlocks.add(block.id);
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+70
@@ -0,0 +1,70 @@
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## Input
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```javascript
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// @validateNoDerivedComputationsInEffects
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import {useEffect, useState} from 'react';
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function Component({propValue}) {
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const [value, setValue] = useState(null);
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useEffect(() => {
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setValue(propValue);
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globalCall();
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}, [propValue]);
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return <div>{value}</div>;
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}
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export const FIXTURE_ENTRYPOINT = {
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fn: Component,
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params: [{propValue: 'test'}],
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};
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```
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## Code
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```javascript
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import { c as _c } from "react/compiler-runtime"; // @validateNoDerivedComputationsInEffects
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import { useEffect, useState } from "react";
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function Component(t0) {
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const $ = _c(5);
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const { propValue } = t0;
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const [value, setValue] = useState(null);
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let t1;
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let t2;
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if ($[0] !== propValue) {
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t1 = () => {
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setValue(propValue);
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globalCall();
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};
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t2 = [propValue];
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$[0] = propValue;
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$[1] = t1;
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$[2] = t2;
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} else {
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t1 = $[1];
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t2 = $[2];
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}
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useEffect(t1, t2);
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let t3;
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if ($[3] !== value) {
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t3 = <div>{value}</div>;
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$[3] = value;
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$[4] = t3;
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} else {
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t3 = $[4];
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}
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return t3;
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}
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export const FIXTURE_ENTRYPOINT = {
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fn: Component,
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params: [{ propValue: "test" }],
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};
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```
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### Eval output
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(kind: exception) globalCall is not defined
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-43
@@ -1,43 +0,0 @@
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## Input
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```javascript
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// @validateNoDerivedComputationsInEffects
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import {useEffect, useState} from 'react';
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function Component({propValue}) {
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const [value, setValue] = useState(null);
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useEffect(() => {
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setValue(propValue);
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globalCall();
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}, [propValue]);
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return <div>{value}</div>;
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}
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export const FIXTURE_ENTRYPOINT = {
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fn: Component,
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params: [{propValue: 'test'}],
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};
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```
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## Error
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```
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Found 1 error:
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Error: Values derived from props and state should be calculated during render, not in an effect. (https://react.dev/learn/you-might-not-need-an-effect#updating-state-based-on-props-or-state)
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error.effect-with-global-function-call-no-error.ts:7:4
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5 | const [value, setValue] = useState(null);
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6 | useEffect(() => {
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> 7 | setValue(propValue);
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| ^^^^^^^^^^^^^^^^^^^ Values derived from props and state should be calculated during render, not in an effect. (https://react.dev/learn/you-might-not-need-an-effect#updating-state-based-on-props-or-state)
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8 | globalCall();
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9 | }, [propValue]);
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10 |
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```
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