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assertNonNull() — react Function Reference

Architecture documentation for the assertNonNull() function in CollectHoistablePropertyLoads.ts from the react codebase.

Function typescript MIRInfrastructure HIR calls 1 called by 4

Entity Profile

Dependency Diagram

graph TD
  7cd776c7_0283_e0eb_af1b_5474c371bd16["assertNonNull()"]
  53e05ed1_ffb1_8db2_8573_ef5a3fb99c72["CollectHoistablePropertyLoads.ts"]
  7cd776c7_0283_e0eb_af1b_5474c371bd16 -->|defined in| 53e05ed1_ffb1_8db2_8573_ef5a3fb99c72
  2c85e7b5_d003_b439_dc7b_cb881996ea23["collectNonNullsInBlocks()"]
  2c85e7b5_d003_b439_dc7b_cb881996ea23 -->|calls| 7cd776c7_0283_e0eb_af1b_5474c371bd16
  73ed54f2_d6a7_c7ec_9243_c999d99e8329["propagateNonNull()"]
  73ed54f2_d6a7_c7ec_9243_c999d99e8329 -->|calls| 7cd776c7_0283_e0eb_af1b_5474c371bd16
  7768e811_2923_bb27_1697_f9458cbb2d02["matchOptionalTestBlock()"]
  7768e811_2923_bb27_1697_f9458cbb2d02 -->|calls| 7cd776c7_0283_e0eb_af1b_5474c371bd16
  8e720f44_2b97_3d0b_5bc7_8a340dc6f442["traverseOptionalBlock()"]
  8e720f44_2b97_3d0b_5bc7_8a340dc6f442 -->|calls| 7cd776c7_0283_e0eb_af1b_5474c371bd16
  041ca752_10c1_3cda_1f5c_02f44a01310e["invariant()"]
  7cd776c7_0283_e0eb_af1b_5474c371bd16 -->|calls| 041ca752_10c1_3cda_1f5c_02f44a01310e
  style 7cd776c7_0283_e0eb_af1b_5474c371bd16 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

compiler/packages/babel-plugin-react-compiler/src/HIR/CollectHoistablePropertyLoads.ts lines 624–634

export function assertNonNull<T extends NonNullable<U>, U>(
  value: T | null | undefined,
  source?: string,
): T {
  CompilerError.invariant(value != null, {
    reason: 'Unexpected null',
    description: source != null ? `(from ${source})` : null,
    loc: GeneratedSource,
  });
  return value;
}

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Frequently Asked Questions

What does assertNonNull() do?
assertNonNull() is a function in the react codebase, defined in compiler/packages/babel-plugin-react-compiler/src/HIR/CollectHoistablePropertyLoads.ts.
Where is assertNonNull() defined?
assertNonNull() is defined in compiler/packages/babel-plugin-react-compiler/src/HIR/CollectHoistablePropertyLoads.ts at line 624.
What does assertNonNull() call?
assertNonNull() calls 1 function(s): invariant.
What calls assertNonNull()?
assertNonNull() is called by 4 function(s): collectNonNullsInBlocks, matchOptionalTestBlock, propagateNonNull, traverseOptionalBlock.

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