duplicateType() — react Function Reference

Architecture documentation for the duplicateType() function in Types.ts from the react codebase.

Function typescript MIRInfrastructure TypeInference calls 1

Entity Profile

MIRInfrastructure→ TypeInference→ duplicateType() — react Function Reference

Dependency Diagram

graph TD
  7d28ada8_0152_f584_b23e_b2bb48916442["duplicateType()"]
  f1874e3c_f8f2_5f68_d3a9_0c56c0dad5ec["Types.ts"]
  7d28ada8_0152_f584_b23e_b2bb48916442 -->|defined in| f1874e3c_f8f2_5f68_d3a9_0c56c0dad5ec
  c50e6c61_a100_0e6f_983b_951164ba4856["makeType()"]
  7d28ada8_0152_f584_b23e_b2bb48916442 -->|calls| c50e6c61_a100_0e6f_983b_951164ba4856
  style 7d28ada8_0152_f584_b23e_b2bb48916442 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

compiler/packages/babel-plugin-react-compiler/src/HIR/Types.ts lines 106–146

export function duplicateType(type: Type): Type {
  switch (type.kind) {
    case 'Function': {
      return {
        kind: 'Function',
        return: duplicateType(type.return),
        shapeId: type.shapeId,
        isConstructor: type.isConstructor,
      };
    }
    case 'Object': {
      return {kind: 'Object', shapeId: type.shapeId};
    }
    case 'ObjectMethod': {
      return {kind: 'ObjectMethod'};
    }
    case 'Phi': {
      return {
        kind: 'Phi',
        operands: type.operands.map(operand => duplicateType(operand)),
      };
    }
    case 'Poly': {
      return {kind: 'Poly'};
    }
    case 'Primitive': {
      return {kind: 'Primitive'};
    }
    case 'Property': {
      return {
        kind: 'Property',
        objectType: duplicateType(type.objectType),
        objectName: type.objectName,
        propertyName: type.propertyName,
      };
    }
    case 'Type': {
      return makeType();
    }
  }
}