last() — react Function Reference

Architecture documentation for the last() function in ReactDOMImageLoad-test.internal.js from the react codebase.

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Entity Profile

BabelCompiler→ Validation→ last() — react Function Reference

Dependency Diagram

graph TD
  a4408445_7a4e_5377_fcf3_3ad992eea5ac["last()"]
  2b0967ae_4ada_ef8e_240c_e06e84080cff["ReactDOMImageLoad-test.internal.js"]
  a4408445_7a4e_5377_fcf3_3ad992eea5ac -->|defined in| 2b0967ae_4ada_ef8e_240c_e06e84080cff
  style a4408445_7a4e_5377_fcf3_3ad992eea5ac fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

packages/react-dom/src/__tests__/ReactDOMImageLoad-test.internal.js lines 42–50

function last(arr) {
  if (Array.isArray(arr)) {
    if (arr.length) {
      return arr[arr.length - 1];
    }
    return undefined;
  }
  throw new Error('last was passed something that was not an array');
}