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markRef() — react Function Reference

Architecture documentation for the markRef() function in ReactFiberBeginWork.js from the react codebase.

Function javascript BabelCompiler Validation called by 5

Entity Profile

Dependency Diagram

graph TD
  add16f45_ce6d_6414_6371_4a68ab583d28["markRef()"]
  0be70812_cc0c_b210_f84f_8e61dd5f831c["ReactFiberBeginWork.js"]
  add16f45_ce6d_6414_6371_4a68ab583d28 -->|defined in| 0be70812_cc0c_b210_f84f_8e61dd5f831c
  9de08ac8_c26a_67db_9944_713b083358ad["updateFragment()"]
  9de08ac8_c26a_67db_9944_713b083358ad -->|calls| add16f45_ce6d_6414_6371_4a68ab583d28
  fec6f182_8acb_a259_b114_e6d1db8ac64b["finishClassComponent()"]
  fec6f182_8acb_a259_b114_e6d1db8ac64b -->|calls| add16f45_ce6d_6414_6371_4a68ab583d28
  53f55fda_e2b6_2801_4fbc_525f8828d23d["updateHostRoot()"]
  53f55fda_e2b6_2801_4fbc_525f8828d23d -->|calls| add16f45_ce6d_6414_6371_4a68ab583d28
  a4677f2e_f0f6_771a_d467_f3a4fbe183e4["updateViewTransition()"]
  a4677f2e_f0f6_771a_d467_f3a4fbe183e4 -->|calls| add16f45_ce6d_6414_6371_4a68ab583d28
  7fe46cc0_0238_85cf_4617_39ebe0b19075["updateScopeComponent()"]
  7fe46cc0_0238_85cf_4617_39ebe0b19075 -->|calls| add16f45_ce6d_6414_6371_4a68ab583d28
  style add16f45_ce6d_6414_6371_4a68ab583d28 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/react-reconciler/src/ReactFiberBeginWork.js lines 1381–1400

function markRef(current: Fiber | null, workInProgress: Fiber) {
  // TODO: Check props.ref instead of fiber.ref when enableRefAsProp is on.
  const ref = workInProgress.ref;
  if (ref === null) {
    if (current !== null && current.ref !== null) {
      // Schedule a Ref effect
      workInProgress.flags |= Ref | RefStatic;
    }
  } else {
    if (typeof ref !== 'function' && typeof ref !== 'object') {
      throw new Error(
        'Expected ref to be a function, an object returned by React.createRef(), or undefined/null.',
      );
    }
    if (current === null || current.ref !== ref) {
      // Schedule a Ref effect
      workInProgress.flags |= Ref | RefStatic;
    }
  }
}

Domain

Subdomains

Defined In

Called By

Source

Frequently Asked Questions

What does markRef() do?
markRef() is a function in the react codebase, defined in packages/react-reconciler/src/ReactFiberBeginWork.js.
Where is markRef() defined?
markRef() is defined in packages/react-reconciler/src/ReactFiberBeginWork.js at line 1381.
What calls markRef()?
markRef() is called by 5 function(s): finishClassComponent, updateFragment, updateHostRoot, updateScopeComponent, updateViewTransition.

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