getFallthroughPropertyType() — react Function Reference

Architecture documentation for the getFallthroughPropertyType() function in Environment.ts from the react codebase.

Function typescript MIRInfrastructure HIR calls 1

Entity Profile

MIRInfrastructure→ HIR→ getFallthroughPropertyType() — react Function Reference

Dependency Diagram

graph TD
  ed5ed57e_aa77_1344_2ec0_5575b749f425["getFallthroughPropertyType()"]
  cba0c8a2_0db5_48e2_0d19_b2c6a46799e8["Environment"]
  ed5ed57e_aa77_1344_2ec0_5575b749f425 -->|defined in| cba0c8a2_0db5_48e2_0d19_b2c6a46799e8
  041ca752_10c1_3cda_1f5c_02f44a01310e["invariant()"]
  ed5ed57e_aa77_1344_2ec0_5575b749f425 -->|calls| 041ca752_10c1_3cda_1f5c_02f44a01310e
  style ed5ed57e_aa77_1344_2ec0_5575b749f425 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

compiler/packages/babel-plugin-react-compiler/src/HIR/Environment.ts lines 1161–1180

  getFallthroughPropertyType(
    receiver: Type,
    _property: Type,
  ): BuiltInType | PolyType | null {
    let shapeId = null;
    if (receiver.kind === 'Object' || receiver.kind === 'Function') {
      shapeId = receiver.shapeId;
    }

    if (shapeId !== null) {
      const shape = this.#shapes.get(shapeId);

      CompilerError.invariant(shape !== undefined, {
        reason: `[HIR] Forget internal error: cannot resolve shape ${shapeId}`,
        loc: GeneratedSource,
      });
      return shape.properties.get('*') ?? null;
    }
    return null;
  }