react Architecture Docs
Home / Function/ retainWhere() — react Function Reference

retainWhere() — react Function Reference

Architecture documentation for the retainWhere() function in utils.ts from the react codebase.

Function typescript BabelCompiler Validation called by 8

Entity Profile

Dependency Diagram

graph TD
  c447b97e_0b8e_b187_e3a8_4be412d6f495["retainWhere()"]
  eb9d33f9_42c1_205c_93e6_8e1365a31839["utils.ts"]
  c447b97e_0b8e_b187_e3a8_4be412d6f495 -->|defined in| eb9d33f9_42c1_205c_93e6_8e1365a31839
  d77babff_42d3_5fdf_4059_c0b9e7cfaeb0["inlineImmediatelyInvokedFunctionExpressions()"]
  d77babff_42d3_5fdf_4059_c0b9e7cfaeb0 -->|calls| c447b97e_0b8e_b187_e3a8_4be412d6f495
  e6e7641a_0356_e256_1ee6_a60705f7edfe["deadCodeElimination()"]
  e6e7641a_0356_e256_1ee6_a60705f7edfe -->|calls| c447b97e_0b8e_b187_e3a8_4be412d6f495
  93674d7a_a49c_dadd_0d67_6c5e98450587["optimizeForSSR()"]
  93674d7a_a49c_dadd_0d67_6c5e98450587 -->|calls| c447b97e_0b8e_b187_e3a8_4be412d6f495
  034ea53e_cd8a_da9d_4b95_99b1f4b8a3ca["flattenReactiveLoopsHIR()"]
  034ea53e_cd8a_da9d_4b95_99b1f4b8a3ca -->|calls| c447b97e_0b8e_b187_e3a8_4be412d6f495
  c58ff1cf_f3a5_ee82_aeb5_ba958870959d["flattenScopesWithHooksOrUseHIR()"]
  c58ff1cf_f3a5_ee82_aeb5_ba958870959d -->|calls| c447b97e_0b8e_b187_e3a8_4be412d6f495
  6869984f_c56b_62c6_1328_06ff93395ab4["validateDependencies()"]
  6869984f_c56b_62c6_1328_06ff93395ab4 -->|calls| c447b97e_0b8e_b187_e3a8_4be412d6f495
  098764b0_1542_854b_0a71_e361ec33cef2["validateNoJSXInTryStatement()"]
  098764b0_1542_854b_0a71_e361ec33cef2 -->|calls| c447b97e_0b8e_b187_e3a8_4be412d6f495
  b2292640_a950_f66a_1a21_4fa1d74f094d["validateNoRefAccessInRenderImpl()"]
  b2292640_a950_f66a_1a21_4fa1d74f094d -->|calls| c447b97e_0b8e_b187_e3a8_4be412d6f495
  style c447b97e_0b8e_b187_e3a8_4be412d6f495 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

compiler/packages/babel-plugin-react-compiler/src/Utils/utils.ts lines 34–46

export function retainWhere<T>(
  array: Array<T>,
  predicate: (item: T, index: number) => boolean,
): void {
  let writeIndex = 0;
  for (let readIndex = 0; readIndex < array.length; readIndex++) {
    const item = array[readIndex];
    if (predicate(item, readIndex) === true) {
      array[writeIndex++] = item;
    }
  }
  array.length = writeIndex;
}

Domain

Subdomains

Defined In

Called By

Source

Frequently Asked Questions

What does retainWhere() do?
retainWhere() is a function in the react codebase, defined in compiler/packages/babel-plugin-react-compiler/src/Utils/utils.ts.
Where is retainWhere() defined?
retainWhere() is defined in compiler/packages/babel-plugin-react-compiler/src/Utils/utils.ts at line 34.
What calls retainWhere()?
retainWhere() is called by 8 function(s): deadCodeElimination, flattenReactiveLoopsHIR, flattenScopesWithHooksOrUseHIR, inlineImmediatelyInvokedFunctionExpressions, optimizeForSSR, validateDependencies, validateNoJSXInTryStatement, validateNoRefAccessInRenderImpl.

Analyze Your Own Codebase

Get architecture documentation, dependency graphs, and domain analysis for your codebase in minutes.

Try Supermodel Free