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useFoo() — react Function Reference

Architecture documentation for the useFoo() function in useMemo-constant-prop.ts from the react codebase.

Function typescript TestingUtilities Fixtures

Entity Profile

Dependency Diagram

graph TD
  704bd81e_1800_a8ae_7b2a_c7116c812244["useFoo()"]
  7c438d77_1a0b_a95c_ae9a_8a04e9891d98["useMemo-constant-prop.ts"]
  704bd81e_1800_a8ae_7b2a_c7116c812244 -->|defined in| 7c438d77_1a0b_a95c_ae9a_8a04e9891d98
  style 704bd81e_1800_a8ae_7b2a_c7116c812244 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/preserve-memo-validation/useMemo-constant-prop.ts lines 5–16

function useFoo(cond) {
  const sourceDep = 0;
  const derived1 = useMemo(() => {
    return identity(sourceDep);
  }, [sourceDep]);
  const derived2 = (cond ?? Math.min(sourceDep, 1)) ? 1 : 2;
  const derived3 = useMemo(() => {
    return identity(sourceDep);
  }, [sourceDep]);
  const derived4 = (Math.min(sourceDep, -1) ?? cond) ? 1 : 2;
  return [derived1, derived2, derived3, derived4];
}

Domain

Subdomains

Defined In

Source

Frequently Asked Questions

What does useFoo() do?
useFoo() is a function in the react codebase, defined in compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/preserve-memo-validation/useMemo-constant-prop.ts.
Where is useFoo() defined?
useFoo() is defined in compiler/packages/babel-plugin-react-compiler/src/__tests__/fixtures/compiler/preserve-memo-validation/useMemo-constant-prop.ts at line 5.

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